Team3S: 3000GT & Stealth   Friday, November 15 2002   Volume 01 : Number 999
 
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Date: Thu, 14 Nov 2002 14:57:06 -0800
From: "Haury, Charles" <CHaury@GOLDER.com>
Subject: Team3S: Air-Conditioner Display not Working - 92 vr4
 
I have been lurking (new to the list) and have learned quite a bit over the last couple of weeks.   The question I have is that the LED display is not working on the auto air-conditioner on my 92  vr4.  It is only the display, the heater and air conditioning work fine.  Any ideas?  Maybe a  separate fuse that has blown which could be replaced?  I think I recall a post on a similar  problem a couple of weeks ago but did not see a solution proposed.
 
Thanks much,
 
Charlie
92 vr4
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 18:02:55 -0500
From: "Bill vp" <billvp@highstream.net>
Subject: Team3S: how long do new stock motor-mounts last
 
I have 15G's, exhaust, fuel mods, etc.  I need some new motor mounts but am leery of the 3sx ones  because of people on 3si complaining about the polyurethane "walking" out over (short periods of)  time.  How long will new stock motor-mounts last with the power that I have?
 
thanks,
Bill
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 15:25:48 -0800
From: "Riyan Mynuddin" <riyan@hotpop.com>
Subject: Team3S: EGT tap, oil pressure question, A/F question :)
 
just finished my S-AFC, ARM1, MBC, turbo meter, and fuel pressure meter install last night. still  waiting to do the fuel pump hotwire. I started up and drove around awhile. The car seems to be  running okay. With the correction factor, it runs red "very lean" at idle (still idles smooth,  though--is this okay?), cycles between the 5 middle LEDs at cruise and medium-throttle, only  hitting blue "very rich" shortly if I punch the gas suddenly. This looks okay to me. Does it  sound right to you guys? I haven't cranked up the boost on the MBC yet since it's going to be  difficult to get an absolute figure based on this little jumpy A/F meter. Especially because I  only have one of them (wired to rear bank since that's where the lean condition usually starts).  I'm thinking about getting a couple EGT gauges to tune more precisely (and safely).
 
Since I have the 93 fed-spec model, I only have one pair of o2 sensors. Stillen DP o2 sensor holes  after the pre-cats were plugged with the provided stillen caps. How about if I remove those caps  and put in EGT sensors. Would EGT still be accurate all the way down there? And if I do this, I'd  need to know the o2 sensor thread diameter so that I'd know whether EGT sensor would fit straight  it, or if I'd need to buy a couple reducer. Anyone know what that thread size is?
 
My other question is that I talked to someone about getting an aftermarket oil pressure gauge, and  he recommended getting some kind of "sandwich" adapter that goes between the oil filter itself and  the filter mounting point. This would be easier, more readily reversible, and it would locate the  sensor farther from the oil pump, which means that the sensor would last longer (we all know how  high the burst pressure can be on a cold start). Does anyone know if these sandwich adapters are  sold for our cars, and where I'd get them?
 
Thanks,
 
Riyan
93 stealth rt tt
 
up and running, finally!
S-AFC,450cc injectors--cleaned and balanced,ARM1,MBC,stillen dp,atr singleshot catback,improved  rear pre-cat and main cat,egr block-off,ek2 fuel rail mod
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 15:52:24 -0800
From: "Gross, Erik" <erik.gross@intel.com>
Subject: RE: Team3S: EGT tap, oil pressure question, A/F question :)
 
> Would EGT still be accurate all the way down there?
 
I have both of mine down there and they read just fine.  Lower temps than before the turbo, but if  you know what the baseline is, you can get an idea of how she's running. 700C max with proper fuel  @14psi, 760C max when a little lean @14psi, 550-600 when cruising at 80 in 6th.  <300 when idling.
 
> And if I do this, I'd need to know the o2 sensor
>  thread diameter
 
M18x1.5, IIRC.  Same as the larger spark plugs.
 
> My other question is that I talked to someone about getting
> an aftermarket oil pressure gauge, and he recommended getting
> some kind of "sandwich" adapter that goes between the oil
> filter itself and the filter mounting
> point. <...> Does anyone know if these sandwich adapters
> are sold for our cars, and where I'd get them?
 
That's how I mounted my oil temp and pressure sensors.  I have pictures, but haven't had time to  make the web page yet.  I got mine here: http://www.racerpartswholesale.com/filtmt.htm #PER186  M20x1.5 for a whole $25.  I bought a couple of brass bushings to mount the sensors and then hacked  it up a bit with my drill press to make it a "pass through" adapter.
 
- --Erik
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 19:51:55 -0500
From: "Darren Schilberg" <dschilberg@pobox.com>
Subject: RE: Team3S: how long do new stock motor-mounts last
 
Well if my 3SX mounts start to "creep" then I'm sure I will let Steve know and get them replaced.   My stock ones lasted just shy of 100,000 miles so if these last half that long (50k) I will be  pleased.  If they last a quarter that long (25k) then I'll also be happy and will probably be near  the break-even point on performance obtained from effort/money put in to their installation.   Honestly, those who do not have them really do not know what you are missing.  And I'm sure 3SX  would press them in again for you or replace them.  I have not taken this up with them but I will  now.  Thanks.
 
- --Flash!
1995 VR-4 at 105k with 3SX polyurethane motor mounts all around
 
- -----Original Message-----
From: Bill vp
Sent: Thursday, November 14, 2002 18:03
 
I have 15G's, exhaust, fuel mods, etc.  I need some new motor mounts but am leery of the 3sx ones  because of people on 3si complaining about the polyurethane "walking" out over (short periods of)  time.  How long will new stock motor-mounts last with the power that I have?
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 17:05:28 -0800 (PST)
From: Roger Ludwig <yiotta@yahoo.com>
Subject: RE: Team3S: how long do new stock motor-mounts last
 
Why do you say we don't know what we are missing?
What do Steve's mounts do for ya?
Roger L
F15DOC
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 20:20:54 -0500
From: "Darren Schilberg" <dschilberg@pobox.com>
Subject: RE: Team3S: how long do new stock motor-mounts last
 
Roger,
 
   Solid motor mounts transmit more oomph to the driveline instead of to the engine's own  movement.  If the engine twists when you are giving it shots of WOT then if it is solidly  connected to the car the engine can no longer twist but instead transmits that through to the  driveline (that is my understanding at least).
   So the slop that used to be taken up with the engine moving around (like cruising in 5th gear  at 60 mph and you get on the throttle 3/4 to WOT and then left off and then get back on I could  feel the engine move or tell that the power was not being transmitted through to the rest of the  components.  With the solid motor mounts when I get on the throttle there is no twisting of the  engine and the car instantly accelerates instead of the engine accelerating in the mushy (read:  dead) motor mounts until they were maxed out and THEN transmitting power through to the driveline.
   I have shown this to a number of individuals.  Normally the engine shakes front to back when we  start out engines.  Mine really does not. It sits quite still.  And when shutting off the engine  the same thing - normally it quivers front to back.  Mine, again, does not.  This means  performance.  This also means you feel it more.  I don't mind that though.  It really is not as  rough as people make it out to be.  At cruising it is almost not noticeable and at idle I think it  is a good feeling and keeps me connected with the car.
   I used to be able to start up in 2nd gear easily (in a 6-speed) but now I get some vibration  like the car is going to die or I don't have enough gas on it but this is just how much slop the  engine used to absorb and how much it is passing through now.  I'm not sure if Erik Gross could  feel this when I took him for a test drive and started in second gear but he got to see the engine  start and stop and can probably indicate how much it moves (I am usually in the car and have a bad  angle to see the engine).
   Now this also means that the driveshaft hangers going to the rear are taking more vibration and  will need upgraded if not just replaced soon and if I ever need to do a timing belt again then  lifting the engine out will be one mo-fo (as the mechanic said) since I can probably lift up the  car simply by putting an engine pulling harness on the engine (it is THAT solidly attached to the  car).  Sometimes, the mechanic said, they just lift up the engine in the mounts and this is enough  play to work on things.  Not now he said.  Oh well.  That's what you get for the performance of  them.
   I related it to the fact that our V6 purrs like a kitten when it doesn't have the ticking of  the engine going on.  Now when I accelerate in second or third gear from about 10-20 mph on up to  50-60 mph it sounds (inside the cabin) and feels more like a typical V8.  The exhaust doesn't  sound like a V8 but most of those cars I have been in (my friend's 2000 Trans-Am non-Ram Air)  feels the same now as mine.  To me it is a good change.  Not everyone will like it though.  It  took my wife about 12 seconds when I got the car back to notice.  She said, "Why is it running so  rough?"  Nuf' said.
 
- --Flash!
www.team3s.com/~dschilberg/cars/engine/
 
- -----Original Message-----
From: Roger Ludwig
Sent: Thursday, November 14, 2002 20:05
 
Why do you say we don't know what we are missing?
What do Steve's mounts do for ya?
 

***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 20:51:57 -0500
From: "David, Jon (J)" <JDavid@dow.com>
Subject: Re: Team3S: removal of ALL MAS honeycombs WITHOUT causing damage  (very long)
 
**Here's my first reply since joining the list, so go easy on me.** Not only did I buy my 92 VR-4  because it's a great car, but also because it's the most hi-tech for the price. Being a technician  by trade I too will be looking for new ways to better old parts. (Sometimes just to see if they  would work) Before gutting my MAS I needed proof of improvement (what would it be like without the  restriction?) I used a second MAS in front of and going into the working MAS and did some hard  test-driving, then I removed the extra MAS and ran the same tests. I used the "feel" method of  testing. (Will know for sure when my data logger gets here next week) I think it only improved the  top end a little with less restriction; improvement could be had only if drivable after mod. My  question... Do you think there is a way to have two air cleaners with two MAS's, one for each  turbo tube. This was my idea for freeing up the restriction of air though the MAS (reduce  restriction by ½) I will be working on multiplying or dividing the signal, which ever is needed.  Any help or thoughts in this area would be appreciated. Thanks
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 20:32:03 -0600
From: "cody" <overclck@satx.rr.com>
Subject: Team3S: FS: '93 - '99 3000GT SL
 
http://66.25.73.198:880/my_3000gt.htm
 
is for sale...
 
few things: Spoiler was removed - actually, stolen, and the mounts are still on the trunk... can  most likely be removed entirely and repainted for very cheap, or if need be, I can get another APR  spoiler to replace the one that was stolen...
 
Car is next to gutted interior, it has Forza's, and that's about it...
 
Other than that, as you see it is how it is being sold right now...
 
Message me on AIM as M3kgtguy, e-mail me at overclck@satx.rr.com or Call me 210-378-2957
 
- -Cody
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 21:30:40 -0500
From: Dennis Ninneman <dninneman@comcast.net>
Subject: Re: Team3S: Open Track Troubles
 
when did they stop making KD's??  I just bought a set for my VR4.
 Nothing said about discontinuing.  Supposedly a new tread pattern for
the KDWs.
 
Dennis -==- Philly
 
Zobel, Kurt wrote:
 
>I've used my BFG KDW (don't make KD anymore) for 3 morning track
>sessions and for a whole day at Fontana. Have to be a little careful
>not to overdrive, but they have held up well, no chunking anywhere.
>
>I am also adamant about straight line braking. Trying to trail brake in
>a heavy car can lead to chunking. Brake, then turn. Take what the car
>will give you even if it means altering what you 'think' is the perfect
>line and style.
>
>Chunking seems mostly to occur with low air pressure and overdriving.
>Make sure you warm them up a few laps. Way overpressure and overdriving
>can do it too. Sounds like you really should advance to track tires,
>Kumho, Toyo, Hoosier.
>
>IMHO, Kurt
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 20:37:27 -0600
From: "cody" <overclck@satx.rr.com>
Subject: RE: Team3S: Open Track Troubles
 
KD's are still available...
 
Sport Compact Car just had a great comparison between them, the Kumho MX's and Michelin Pilot  Sports...  Overall, the KD's took first, Kumho's second, and Sports were last...
 
This is in handling conditions and road course conditions...
 
- -Cody
 
- -----Original Message-----
From: Dennis Ninneman
Sent: Thursday, November 14, 2002 8:31 PM
Subject: Re: Team3S: Open Track Troubles
 
when did they stop making KD's??  I just bought a set for my VR4.
 Nothing said about discontinuing.  Supposedly a new tread pattern for
the KDWs.
 
Dennis -==- Philly
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 7 Nov 2002 21:54:06 -0700
From: "Sapphire Platypus" <dashbyiii@earthlink.net>
Subject: Team3S: Coolant light just started coming on
 
Recently my coolant light (I think that's what the Roman looking building is
called) has started to come on shortly after starting up my car. The light usually comes on when I  back off the throttle while still in gear (while still moving), and stays on until I press on the  throttle again. The only weird part is that the light is only coming on like that while the car is  cold, once it heats up to normal operating range (Just a little under halfway on the gauge) the  light stops coming on no matter what I do. What could the problem be? Thanks, Donald Ashby '93  3000GT VR-4 "Don't drink and park, accidents cause people!" "They call them fingers, but I've  never seen them fing"
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 7 Nov 2002 21:57:23 -0700
From: "Sapphire Platypus" <dashbyiii@earthlink.net>
Subject: Team3S: Reverse lights not coming on
 
Recently I had to drive in reverse while it was dark out and I was surprised to find I have no  reverse lights. This is the first time I have driven in reverse at night since I had my  transmission replaced. Could there be some wiring that the mechanics didn't hook up? I had the  work done under warranty at my local Mitsubishi dealer ship, and I'm very sure that the lightbulbs  didn't burn out. Could anyone explain a way to fix this, I have both manuals (Body and electrical)  but I can't find what I'm looking for in there, someone please help! Donald Ashby '93 3000GT VR-4  "Don't drink and park, accidents cause people!" "They call them fingers, but I've never seen them  fing"
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 01:41:28 -0500
From: "Alex Pedenko" <alex@kolosy.com>
Subject: RE: Team3S: Coolant light just started coming on
 
Your coolant level is at that threshold where it's almost at the low line, but not quite. Stepping  on the gas changes the level relative to the sensor, fooling it into thinking there's more. When  the temp rises, the coolant expands, yet again fooling the sensor. I'm willing to bet that when it  warms up and the light goes away, if you slam on the brakes, it'll flash...
 
Alex
 
'95 VR4
"remember the time I dropped the keys, but you thought the phone was ringing?"
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Thu, 14 Nov 2002 23:16:53 -0800
From: "Riyan Mynuddin" <riyan@hotpop.com>
Subject: RE: Team3S: removal of ALL MAS honeycombs WITHOUT causing damage (very long)
 
Be careful, whatever you do. Take your time if you're going to gut the MAS because you may want to  re-install those honeycombs. And don't do it unless you have enough upgrades to justify it. Either  way, you'll need A/F meter, S-AFC (or similar) and EGT gauge to tune. Datalogger is VEY helpful  too, but I'd be scaring to play with things with datalogger only. Remember that you'd be able to  check knock sum and O2 voltage (I think) but not EGT. It can be difficult without EGT.  What kind  of mods do you have right now? I think a good way to test whether there's any power gains is by  tuning with and without honeycombs to a G-tech or other type of accelerometer that will give you a  ballpark HP reading. <--- either way you'll haveta spend money somewhere. Two MASes is a good  idea, but I don't see how it could improve airflow twofold. It would also take two karman sensors  and a custom design... more time and money. Sure thing, I'm the originator of the post, but even I  don't feel that I have enough upgrades to benefit from gutting MAS.
 
Here is my current list:
 
S-AFC,450cc injectors--cleaned and balanced,ARM1,MBC,stillen dp,atr singleshot catback,improved  rear pre-cat and main cat,egr block-off,ek2 fuel rail mod
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 14:37:29 -0000
From: "Jeff Lucius" <jlucius@stealth316.com>
Subject: Re: Team3S: Reverse lights not coming on
 
Hey "Sapphire" (that's so cute! :) ),
 
The backup light switch is probably disconnected. It mounts on the transaxle
above the fill plug (at least on the W5MG1). Look at the service manual (it's
in there!) or my web page below for more info and a picture of it.
 
http://www.stealth316.com/2-trany.htm
 
Jeff Lucius, http://www.stealth316.com/
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 14:50:09 -0000
From: "Jeff Lucius" <jlucius@stealth316.com>
Subject: Re: Team3S: removal of ALL MAS honeycombs WITHOUT causing damage (very long)
 
The MAS "honeycombs" are a restriction?
 
Really! How much? That is, what is the air pressure in the intake hose right
after the MAS with the "honeycombs" and without them?
 
Any "proof" of a possible performance improvement will be a measured,
significant, repeatable difference in air pressure in the intake hose. Not
that this makes any practical difference on a turbocharged engine anyway!
 
Sorry, "butt dynos" ain't worth shit, and a datalogger does not measure intake
hose pressure (but should report barometric pressure for you). Plus retrieving
usable HP/torque values from the RPM-time-drivetrain info is impractical with
the TMO or PL using the factory CAS (most of the time).
 
Jeff Lucius, http://www.stealth316.com/
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 07:18:47 -0800
From: "Shawn Keren" <nouveau3@attbi.com>
Subject: Team3S: Anyone here done the Accell coil mod?
 
I've got three Accell Super coils, part # 140017, coming today from Summit Racing. I'm planning on  installing them in my VR4 tomorrow. Has anyone here done this mod already? Is there anything that  I should watch out for or any warnings that you might have? Maybe some wiring hints or help?
 
Thanks in advance
 
Regards,
Shawn Keren
 
Red '92 VR4
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 09:29:06 -0600
From: "Willis, Charles E." <cewillis@TexasChildrensHospital.org>
Subject: RE: Team3S: Open Track Troubles
 
Can you shave down used tires?
 
If not, Dave, it sounds like time for you to get a spare set of wheels and mount some Yoko  AO32R's.
 
Chuck Willis
 
- -----Original Message-----
From: Geoff Mohler [mailto:gemohler@www.speedtoys.com]
Sent: Wednesday, November 13, 2002 4:33 PM
Subject: Re: Team3S: Open Track Troubles
 
Just overdrove the available air pressures and/or camber you have available.
 
BFGs are great autox tires, but they can overheat pretty easy with abuse on a road course.
 
Chunking is what happens with tall tread blocks..why racers shave em down new.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 07:27:38 -0800
From: Michael Gerhard <gerhard1@llnl.gov>
Subject: Re: Team3S: Reverse lights not coming on
 
At 08:57 PM 11/7/02 , you wrote:
>Recently I had to drive in reverse while it was dark out and I was
>surprised to find I have no reverse lights.
 
Wow, this is too weird. I was getting ready to post a similar question. My
reverse lights have ceased to function (I have yet to know when it
happened) and I was getting ready to check the service manuals for hints as
to the cause. The bulbs look okay. I'm wondering if there is a fuse that
might be out or if the switch is out of adjustment. I'm curious as to any
fixes folks have found for non functioning reverse lights.
 
Thanks.
 
- --------------------------------------------------------------
Michael A. Gerhard     1991 Mitsubishi 3000GT VR4  Pearl White
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 09:33:21 -0600
From: "Willis, Charles E." <cewillis@TexasChildrensHospital.org>
Subject: RE: Team3S: Brake Rotor Wear
 
Dave,
 
I have found resurfacing the rotors to be useful, but you have to be very careful that the machine  shop does a light cut and not a huge cut, otherwise you lose a lot of life from the rotors.   Resurfacing pads is tough unless you are set up to do it precisely.  I can testify that trying to  do it freehand on a grinder doesn't work real well! Cleaning the pads with brake cleaner and a  scotch-brite pad works well too, in case you have some chunks embedded.
 
Chuck
 
After switching to Porterfield R4 compound, the wear on my rotors is severe. Whereas the R4S would  leave the rotors smooth, the R4's groove the surface severely.  Is there any benefit to having the  rotors resurfaced?  Is it necessary to resurface the pads at the same time?  Aside from the wear,  I've found the R4's to be the best track pads I've used so far.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 09:36:25 -0600
From: "Willis, Charles E." <cewillis@TexasChildrensHospital.org>
Subject: RE: Team3S: Open Track Troubles
 
Kurt - you are a driver after my own heart!
 
I am also adamant about straight line braking. Trying to trail brake in a heavy car can lead to  chunking. Brake, then turn. Take what the car will give you even if it means altering what you  'think' is the perfect line and style.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 09:39:42 -0600
From: "Willis, Charles E." <cewillis@TexasChildrensHospital.org>
Subject: RE: Team3S: Brake Rotor Wear
 
Another convert!
 
Funny thing is that Carbotech is moving their factory, so when I needed replacement Panther Plus,  I couldn't get them.  I have a set of Hawk Blue pads to try out next track event (either weekend  post Thanksgiving or Dec 14-15).
 
Chuck
 
BTW, I've switched to Carbotech Panther Plus pads. You can actually use them on the street. (I  don't, because they are too noisy, but you can.) They last a lot longer than R4 pads -- typically  2+ events (5 track days), then the remainder goes into the spare pads box. I used to use a set of  R4 pads per weekend.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 09:57:59 -0600
From: "merritt@cedar-rapids.net" <merritt@cedar-rapids.net>
Subject: RE: Team3S: Brake Rotor Wear
 
At 09:39 AM 11/15/02 -0600, Willis, Charles E. wrote:
>Another convert!
>Funny thing is that Carbotech is moving their factory, so when I needed
>replacement Panther Plus, I couldn't get them.  I have a set of Hawk
>Blue pads to try out next track event (either weekend post Thanksgiving
>or Dec 14-15).
 
Chuck:
Have you tried to find Andie Lin (previously our contact at Carbotech)? He is apparently off on  his own making pads.
 
I have this address:
Andie W. Lin
andiewlin@yahoo.com
 
Cobalt Friction Technologies
1013 N. Federal Highway
Fort Lauderdale, FL 33304
954.828.1512  Office
954.828.1517  Fax
 
I haven't heard a peep out of him, nor have I heard any reports about his pads.
 
As for the Carbotech pads, I started with the P compound but switched over to the XP. The P and XP  can both be used on the street, but the XP makes way too much noise and dust for me, so I swap  them out after an event. They last pretty good, but now I don't know if it's the pad or my new  braking technique that makes them last. As you demonstrated, I just stab the brakes now, turn in  early, and carry speed, which makes the little suckers last forever.
 
Rich/slow old poop.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 07:56:39 -0800
From: "fastmax" <fastmax@cox.net>
Subject: Re: Team3S: Open Track Troubles
 
NO !!! The problem is that after they are driven on the road they pick up rocks and other  abrasives in the tread and that ruins the cutters on the equipment that shaves them. Plus it  seems that there are few places that offer that service.
 
I've got a set of 94 VR-4 rims for sale --- the chrome ranges from good
to fair. They have a set of Goodyear Eagles on them [ 20% left ].
 
        Jim Berry ===============================================
 
- ----- Original Message -----
From: "Willis, Charles E." <cewillis@TexasChildrensHospital.org>
 
> Can you shave down used tires?
>
> If not, Dave, it sounds like time for you to get a spare set of wheels
> and mount some Yoko AO32R's.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 10:45:49 -0600
From: "Willis, Charles E." <cewillis@TexasChildrensHospital.org>
Subject: RE: Team3S: Brake Rotor Wear
 
No, I haven't heard anything from him either.
 
I never went to the XP pads, because I was satisfied with the Plus pads.
 
Chuck
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
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Date: Fri, 15 Nov 2002 12:55:22 -0500
From: "Zobel, Kurt" <Kurt.Zobel@ca.com>
Subject: RE: Team3S: Open Track Troubles
 
Well, I have the KDW's, checked Tirerack and 2 other tire dealers to see if I could get KD vs KDW,  they all said not available.  That was last winter so perhaps they just don't make KD in winter,  but no one mentioned that.
 
Can't say I'm unhappy with KDW, just didn't want KDWS (the all season) in SoCal. The KDW have big  gaping holes between the tread blocks, which just puts a lot less tread on the ground. Haven't  seen KD's up close for comparison. I'd rather be tasked with the responsibility of saying to  myself 'Hey, its raining stupid, slow down' than having my dry traction reduced. OH, well, have to  wait another year to switch.
 
Kurt
 
- -----Original Message-----
From: cody [mailto:overclck@satx.rr.com]
Sent: Thursday, November 14, 2002 6:37 PM
Subject: RE: Team3S: Open Track Troubles
 
KD's are still available...
 
Sport Compact Car just had a great comparison between them, the Kumho MX's and Michelin Pilot  Sports...  Overall, the KD's took first, Kumho's second, and Sports were last...
 
This is in handling conditions and road course conditions...
 
- -Cody
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 12:13:32 -0600 (CST)
From: Geoff Mohler <gemohler@www.speedtoys.com>
Subject: RE: Team3S: Brake Rotor Wear
 
I contacted him, to resell his stuff.
 
Imp vendor agnostic..I don't care..I just want to be the brake source for people to contact.
 
He'd only let me sell his, if I stopped selling anyone else's.
 
So..guess what, I'm not selling his pads.
 
On Fri, 15 Nov 2002, merritt@cedar-rapids.net wrote:
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 12:17:52 -0600
From: "Willis, Charles E." <cewillis@TexasChildrensHospital.org>
Subject: RE: Team3S: Brake Rotor Wear
 
I wonder who would sell anyone's pads under such exclusive conditions?
 
Doesn't sound reasonable to me.  Maybe he just wants to sell direct to people.
 
Chuck
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 12:18:46 -0600 (CST)
From: Geoff Mohler <gemohler@www.speedtoys.com>
Subject: RE: Team3S: Brake Rotor Wear
 
Makes sense as a small company..you keep the margins to yourself to build cash flow.
 
But still..I get requests for brands all the time, and I'll do my best to figure out how to get  em.
 
On Fri, 15 Nov 2002, Willis, Charles E. wrote:
 
> I wonder who would sell anyone's pads under such exclusive conditions?
>
> Doesn't sound reasonable to me.  Maybe he just wants to sell direct to
> people.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 10:24:54 -0800
From: "Bob Forrest" <bf@bobforrest.com>
Subject: Re: Team3S: Brake Rotor Wear
 
Andie is still a Team3S member but just busy as hell with his new company (and racing his NSX).   Contact him here (note his new website):
 
Andie W. Lin
andie@cobaltfriction.com
Cobalt Friction Technologies
http://www.cobaltfriction.com
1013 N. Federal Highway, Fort Lauderdale, FL 33304
Office: 954.828.1512  ::  Fax: 954.828.1517
 
- --Forrest
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 18:29:38 -0000
From: "Jeff Lucius" <jlucius@stealth316.com>
Subject: Re: Team3S: Anyone here done the Accell coil mod?
 
Adam Fortier and Allan Bautista have some write-ups and tips on installing
aftermarket coils in our cars.
 
http://www.omni-vr4.com/Accel%20Coils/index.htm
http://www.allanbautista.com/accel/
 
Jeff Lucius, http://www.stealth316.com/
 
- ----- Original Message -----
From: "Shawn Keren" <nouveau3@attbi.com>
Sent: Friday, November 15, 2002 8:18 AM
Subject: Team3S: Anyone here done the Accell coil mod?
 
I've got three Accell Super coils, part # 140017, coming today from Summit Racing. I'm planning on  installing them in my VR4 tomorrow. Has anyone here done this mod already? Is there anything that  I should watch out for or any warnings that you might have? Maybe some wiring hints or help?
 
Thanks in advance
 
Regards,
Shawn Keren
 
Red '92 VR4
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 11:21:13 -0800
From: "Dean Benz" <dbenz@vchillclimb.org>
Subject: Team3S: Trail braking & tire chunking(was: Open Track Troubles)
 
I agree with "take what the car will give you", but have a slightly different perspective on trail  braking.
 
IMHO a little bit of trail braking is a good thing, and should not cause chunking on properly  inflated and heated tires. It is not a simple thing to do well, but well worth practicing and  learning.
 
One of the primary goals of trail braking is to smoothly transition the suspension from a braking  condition to a turning condition and provide additional traction for turn initiation.
 
Under trail braking, the front suspension and tires are loaded under braking and when steering is  first applied, the tires have addition traction due to that loading. If braking force and steering  input are properly balanced (turning increasing as braking decreases) the outside front corner  suspension which is most responsible for turning undergoes a minimum of disturbance, thus  maximizing traction at that corner.
 
If you brake in a straight line, and then lift off the brakes prior to turning in, the car's  weight transfers from the front suspension/tires back to a neutral state, and then to the side  AFTER you turn in. Since the tires are less loaded and therefore have less traction at turn in,  they are much more likely to push/scrub/chunk, etc... And once a tire is pushing, it tends to  continue to do so until the driver does something about it.
 
That said, trail braking is an advanced technique, and can get you in deep trouble if not done  correctly. (I know from first hand experience...) That is why braking in a straight line is taught  to novice drivers.
 
Back to tires...
 
In my experience, a loaded tire driven within it's limits is less likely to chunk/shred/tear than  a unloaded tire driven beyond it's limits.
 
Most of the chunking I have seen is from tires that are over driven while cold and/or incorrectly  inflated.. Performance street tires should be brought up to temperature and pressure just like  race tires, if not more so because of the more fragile nature of their taller tread blocks.  Depending on the course, this may well be 3-5 or more laps of smooth speed, heat and pressure  build up.
 
Often novice drivers are told to raise their pressures at track events, but once they get more  comfortable and start adding real speed through the corners and really heating their tires up,  they are seldom told to lower or monitor their pressures or the need to warm tires. I see more  chalk/shoe polish, and pyrometers at Autocross events than I do at "performance driving" track  events. And that is unfortunate.
 
Just my $.02..
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 13:31:08 -0600 (CST)
From: Geoff Mohler <gemohler@www.speedtoys.com>
Subject: Re: Team3S: Trail braking & tire chunking(was: Open Track Troubles)
 
Well, it has everything to do with alignment in the end.
 
100psi wont keep a tire from chunking if all you are doing is loading up the edge of the tire  because you don't have enough camber.
 
Trail braking will easily increase front-outside tire load..and further complicate the problem as  well.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 11:04:34 -0800
From: "Riyan Mynuddin" <riyan@hotpop.com>
Subject: RE: Team3S: removal of ALL MAS honeycombs WITHOUT causing damage
 
You do have a point Jon, but it all depends on how you spin it. If you're going to try tuning with  stock injectors, it's easy to go lean. >From what I know, 3S cars are designed to run slightly rich  on mild acceleration, very rich on hard acceleration, but lean themselves out at cruise. Your  biggest concern in tuning is running lean. That has detonation, preignition, and ________ [fill in  the blank with hazards that may cause a rebuild] written all over it! If you start with bigger  injectors, then it'll give you an extra cushion to keep you safe IMO. Sure, I'm probably known on  the board to be one of the more paranoid, perfectionist types lately. But that's because there's  other things you can do too. What kind of budget do you have to work with? There's already setups  out there that completely remove the MAS. The
ARC1+computer package goes for around $1,000 to $1,100 and will be a
ARC1+great,
solid baseline for your future upgrades.
 
Regarding two karman sensors, take what Jeff L. says seriously. Have you seen his site yet? This  guy isn't just playing around. I've cut down my labor time by at least one half thanks to all the  useful info on it. I said it before, and I'll say it again. I sure do like your idea. But if  you're really intent on going the two MAS route, do yourself a favor and get it flow tested  [credit goes to whoever recommended that idea] with and without honeycombs. Then take off the  stock hosing that goes to your turbos and flow test with two MASes and check your results against  the stock setup.
 
1) If there's a significant difference and
2) if the added air flow will actually help engine performance (at some point it just doesn't help  anymore),
 
then perhaps it'll be worth the money to start messing with your car. Otherwise, remember. These  3S cars are expensive toys. Anything that you can do without having the actual car as a whole  involved is preferable.
 
Riyan
93 rt tt
 
"David, Jon" wrote:
 
Also I would like to try running two MSA's while the car is close to stock. That way, if there's  trouble, I know where to look first.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 13:47:12 -0600
From: "Willis, Charles E." <cewillis@TexasChildrensHospital.org>
Subject: RE: Team3S: Trail braking & tire chunking(was: Open Track Troubles)
 
"If you brake in a straight line, and then lift off the brakes prior to turning in, the car's  weight transfers from the front suspension/tires back to a neutral state, and then to the side  AFTER you turn in. Since the tires are less loaded and therefore have less traction at turn in,  they are much more likely to push/scrub/chunk, etc... And once a tire is pushing, it tends to  continue to do so until the driver does something about it."
 
If you trail brake into a turn, you are going to have to come off the brakes sometime, and when  you do, you will transfer weight off the front wheels.  While you may consider that maximum  cornering force is exerted at turn-in, the front wheels are cornering throughout the turn.  When  you come off the brakes, the car is going to push in the turn.  If you come off before turn-in, and  wait for the suspension to go neutral, the car is going to understeer some, but not as much as the  hysteresis in the midst of the turn with trail braking. Your tires are sharing cornering and  braking force, so you will have less of each available. You are absolutely right that it is easy  to make a mistake under these conditions, and a mistake affects both grip and suspension.
 

"Often novice drivers are told to raise their pressures at track events, but once they get more  comfortable and start adding real speed through the corners and really heating their tires up,  they are seldom told to lower or monitor their pressures or the need to warm tires. I see more  chalk/shoe polish, and pyrometers at Autocross events than I do at "performance driving" track  events. And that is unfortunate."
 
I would dearly love to have some objective information about how to modify warm tire pressures.  I  don't think there is any reliable way to do this.  I think you have to set the cold pressures and  can make only small changes based on (shoulder) wear during the day.
 
Chuck Willis
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 13:45:52 -0600
From: "cody" <overclck@satx.rr.com>
Subject: RE: Team3S: Open Track Troubles
 
Try Discount Tire dood...
 
http://www.discounttiredirect.com/dtd/findTireSizesByBrand.do?step=sizes
&index=2
 
We have them in stock all the time...
 
- -Cody
 
- -----Original Message-----
From: Zobel, Kurt [mailto:Kurt.Zobel@ca.com]
Sent: Friday, November 15, 2002 11:55 AM
Subject: RE: Team3S: Open Track Troubles
 
Well, I have the KDW's, checked Tirerack and 2 other tire dealers to see if I could get KD vs KDW,  they all said not available.  That was last winter so perhaps they just don't make KD in winter,  but no one mentioned that.
 
Can't say I'm unhappy with KDW, just didn't want KDWS (the all season) in SoCal. The KDW have big  gaping holes between the tread blocks, which just puts a lot less tread on the ground. Haven't  seen KD's up close for comparison. I'd rather be tasked with the responsibility of saying to  myself 'Hey, its raining stupid, slow down' than having my dry traction reduced. OH, well, have to  wait another year to switch.
 
Kurt
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 11:18:28 -0800
From: "Riyan Mynuddin" <riyan@hotpop.com>
Subject: Team3S: which bearings are accessible when oil pan is dropped?
 
Satan refused to work on my car. Long story. Message me off board for the details.
 
So it looks like I'm gonna have to do this all myself, unless I can find another satan or  independent dealer that'll work with me. If I drop the oil pan, will I be able to see ALL of the  main and rod bearings?  Has anyone out their checked their oil clearances? And what method did you  use? I've heard from quite a few places to "plastigage" it. Can this method be used without taking  the engine out of the car?
 
Thanks,
Riyan
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 11:59:10 -0800
From: "Dean Benz" <dbenz@vchillclimb.org>
Subject: Re: Team3S: Trail braking & tire chunking(was: Open Track Troubles)
 
Car setup involves more than just any one of it's components, springs, shocks, sway bars,  alignment, tire pressure, tire temperature, etc..
 
Changing any one of them will likely impact how a driver will need to drive to get the most out of  the car. By "most", I do not necessarily mean speed. Fast for 5 laps does no good in a 20 lap  race. Sometimes "most" is just surviving to make it back to the pits with all the parts still  attached...
 
Yes, cars with street alignments will tend to eat the shoulders of the front tires the worst.  Heck, most race prepped cars eat the front shoulders the worst. To what extent entirely depends on  the driver and how he drives, not the weight of the car.
 
Proper tire pressure and warming them properly is very important no mater how your car is aligned.
 
- ----- Original Message -----
From: "Geoff Mohler" <gemohler@www.speedtoys.com>
Sent: Friday, November 15, 2002 11:31 AM
Subject: Re: Team3S: Trail braking & tire chunking(was: Open Track Troubles)
 
> Well, it has everything to do with alignment in the end.
>
> 100psi wont keep a tire from chunking if all you are doing is loading
> up the edge of the tire because you don't have enough camber.
>
> Trail braking will easily increase front-outside tire load..and
> further complicate the problem as well.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 20:18:15 -0000
From: "Jeff Lucius" <jlucius@stealth316.com>
Subject: Re: Team3S: which bearings are accessible when oil pan is dropped?
 
All rod bearings are completely accessible (remove cap, rotate crank to get
other half). You will have to remove the main bearing cap (of course) and
crank to inspect the mains. I am not suggesting that you repair any damage or
install new bearings from the oil pan side. But you can inspect these
components by removing the oil pan. But before removing any caps, just see if
you can "rattle" the rods by hand to see which (if any) rod bearings are bad.
 
http://www.stealth316.com/2-oilpan.htm
 
Jeff Lucius, http://www.stealth316.com/
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 14:46:26 -0600
From: "Willis, Charles E." <cewillis@TexasChildrensHospital.org>
Subject: RE: Team3S: Trail braking & tire chunking(was: Open Track Troubles)
 
My braking is almost exclusively straight braking.  I have Eibach springs, GC setup, and  aftermarket antisway bars front and back.  The current failure mode for my AO32R tires is cording  through the central portion of the tire.  Previous wear-out was on the shoulders.  I still get wear  on the outside shoulder of the tries and have to remount them inside out to stretch the wear, but  the wear is now essentially even across the tire - there is just less rubber on the middle.  There  is no evidence of overinflation - the wear on the shoulder matches up to the wear indicator  triangle.
 
My alignment is stock at stock height at the maximum negative camber allowed in the spec.  When I  drive at the track, I lower the car about 1" from stock, which should mean more negative camber.   I make no adjustments of toe-in at the track.
 
I am using A032R tires, and have seen no chunking in five seasons.  Maybe this is the difference  between lightly treaded and heavily treaded tires.  Maybe Rich Merritt could comment on whether he  has ever chunked A032Rs.  I recall he had some problems with other tires.
 
Chuck
 
- -----Original Message-----
From: Dean Benz [mailto:dbenz@vchillclimb.org]
Sent: Friday, November 15, 2002 1:59 PM
Subject: Re: Team3S: Trail braking & tire chunking(was: Open Track
Troubles)
 
Car setup involves more than just any one of it's components, springs, shocks, sway bars,  alignment, tire pressure, tire temperature, etc..
 
Changing any one of them will likely impact how a driver will need to drive to get the most out of  the car. By "most", I do not necessarily mean speed. Fast for 5 laps does no good in a 20 lap  race. Sometimes "most" is just surviving to make it back to the pits with all the parts still  attached...
 
Yes, cars with street alignments will tend to eat the shoulders of the front tires the worst.  Heck, most race prepped cars eat the front shoulders the worst. To what extent entirely depends on  the driver and how he drives, not the weight of the car.
 
Proper tire pressure and warming them properly is very important no mater how your car is aligned.
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 12:44:46 -0800
From: "fastmax" <fastmax@cox.net>
Subject: Re: Team3S: which bearings are accessible when oil pan is dropped?
 
Plastigage is indeed a method to check clearances --- however --- it is not the proper method.  Replacing bearings with the crank in the car is an almost guaranteed way of doing another rebuild  properly 1000 miles later.
 
Too many things to go wrong with the engine in the car and no way to
check the real problem --- the crank. Crank dimensions should be within a few ten thousandths and  cannot be eyeballed.
 
I've been exchanging a few emails on the subject with Cyrus Nassiri, who, it seems does rebuilding  of high output engines and has passed some of that information on. I can forward the messages to  you if you wish.
 
If you just want to look, then as mentioned, it's fairly easy.
 
        Jim Berry ==================================================
- ----- Original Message -----
From: "Riyan Mynuddin" <riyan@hotpop.com>
Sent: Friday, November 15, 2002 11:18 AM
Subject: Team3S: which bearings are accessible when oil pan is dropped?
 
> Satan refused to work on my car. Long story. Message me off board for
> the details.
>
> So it looks like I'm gonna have to do this all myself, unless I can
> find another satan or independent dealer that'll work with me. If I
> drop the oil pan, will I be able to see ALL of the main and rod
> bearings?  Has anyone out their checked their oil clearances? And what
> method did you use? I've heard from quite a few places to "plastigage"
> it. Can this method be used without taking the engine out of the car?
>
> Thanks,
> Riyan
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 13:05:31 -0800
From: "Dean Benz" <dbenz@vchillclimb.org>
Subject: Re: Team3S: Trail braking & tire chunking(was: Open Track Troubles)
 
Moderator, is this appropriate, or should we take this to the racing forum?
 
_________________________________________
 
It's all about being smoooooooooth.... Hands, and feet.
 
The ultimate in trail braking is to use 100% of the available traction on the front outside tire.  I have never achieved this and often exceeded it...
:-)
 
Without getting into slip angles, and all that good stuff, if a driver comes off the brakes in  proper proportion to the increasing amount of steering input, the effective weight on the outside  front tire/suspension will remain constant or more likely decrease proportionally to speed which  is also being scrubbed during braking/turning.
 
If done correctly, just as the brake pads pull away from the disc, the wheel is at the maximum  angle for the turn, and 100% of the available traction is being used to turn the car as it flies  past the desired apex. An instant later, the driver starts unwinding the wheel and applying power  in exact proportion to maximize exit speed and use only 100% of the traction available at either  of the front or rear outside corners. (If only it was that easy....)
 
Theoretically, as long as the driver keeps at or below the available traction, the tire will not  slip.
 
Minimizing upset of the outside front corner is one of the primary goals of trail braking. Being  able to brake later is the other key component.
 
Again, back to tires...
 
Tire pressures are an art that has probably only be mastered by a handful of people. The rest of  us can only do our best with pyrometers, chalk/shoe polish, our ears, and the seats of our pants.
 
Your right, working with them during the day is often best. If you can check with a pyrometer in  the hot pits right after a couple clean hooked up laps on already hot tires that will help a lot.
 
Possibly more important though IMHO for us weekend folks, the trick is to understand the pressures  after they have cooled from a good configuration. Knowing where they are cold will help you set  them correctly for the next event and get to that good configuration that much faster.
 
For example. Hot, my setup is well balanced with about 5-6 pounds more in the front than rear.  Cold, this is only about 3-4 because the rears never heat as much as the fronts. I also find that  my "inside" tires will heat about 1-2 pounds less than my outsides. All this depends on the track,  and your driving, car setup, etc. but knowing how to get your cold pressures close to start with  will make for a much happier day on the track.
 
The pressure on my tires is always below optimal when I fist leave the pits for a run group. I  take 3-5 laps to warm them and myself up. If I have guessed right about how much they will  heat/raise in pressure, I get the rest of the run group fairly well hooked up.
 
- -Dean
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 15:14:43 -0600
From: "merritt@cedar-rapids.net" <merritt@cedar-rapids.net>
Subject: RE: Team3S: Trail braking & tire chunking(was: Open Track Troubles)
 
>My braking is almost exclusively straight braking.
I never trail brake, because I turn in way early immediately after straight line braking, and get  the power on where RWD cars are trail braking. Just like Chuck taught me.
 
> I have Eibach springs, GC setup, and aftermarket antisway bars front and back.
Me too. Plus camber plates.
 
> The current failure mode for my AO32R tires is cording through the central portion of the tire.
 
Me too. Actually, I tend to shred the tire at a 45 deg angle across, with most wear in the center.
 
>There is no evidence of overinflation - the wear on the shoulder matches up to the wear indicator  triangle.
 
Me too. In fact, I have lowered my tire pressures to about 36/38 psi cold in front/rear to match  my driving style. Rookies may want to keep the pressure up.
 
I toss mine at the sign of a cord, and cords can show up anywhere -- even on the INSIDE shoulder!
 
>My alignment is stock at stock height at the maximum negative camber allowed in the spec.  When I  drive at the track, I lower the car about 1" from stock, which should mean more negative camber.   I make no adjustments of toe-in at the track.
 
I am lowered to the max, with -2 deg camber and positive toe.
 
>I am using A032R tires, and have seen no chunking in five seasons.  Maybe this is the difference  between lightly treaded and heavily treaded tires.  Maybe Rich Merritt could comment on whether he  has ever chunked A032Rs.  I recall he had some problems with other tires.
 
Nope, never. I chunked a set of Kumhos, because I did not buy them shaved. The big fat shoulder on  a Kumho MUST be shaved, or you can cord or chunk it in ONE weekend. All that rubber out there  warps and twists too much.
 
I've always wondered: if a Kumho was mounted backward (fat shoulder in), so it could be worn down  instead of being shaved down, would that double its life? No, it's not a directional tire, in  spite of the arrows.
 
A Kumho is good for at least a second a lap -- maybe more -- over an 032, but the Yokos wear like  IRON. Kumhos wear quickly.
 
Like Chuck, I prefer tire life to lap times. 
 
Wish there was a tire in between the O32 and the Kumho -- fast laps and long life.
 
Rich/slow old poop
 
***  Info:  http://www.Team3S.com/Rules.htm  ***
 
------------------------------
 
Date: Fri, 15 Nov 2002 16:14:55 -0800
From: "Dean Benz" <dbenz@vchillclimb.org>
Subject: Re: Team3S: Trail braking & tire chunking(was: Open Track  Troubles)
 
> I never trail brake, because I turn in way early immediately after
straight line braking, and get the power on where RWD cars are trail
braking. Just like Chuck taught me.
 

Can you explain this a bit more? Normally turning in early is a guarantee
that you will not be able to power through the apex to the exit unless you
over brake.
 
Trail braking does not negate powering through the apex, it just aids in
turning in when done correctly. You may actually be trail braking if by
"immediately" means your foot is still coming up with the pedal as you turn
in. Only if your foot is entirely off the brake when you turn in are you not
trail braking at all. For some people light trail braking is so natural, the
don't know they are doing it. I did it so obviously entering turn 2 at
Thunderhill when starting out my instructor pointed it out to me and I
didn't even know what he meant. Since I have been instructing, I have
noticed a number of other drivers do it lightly as well without realizing
it.
 
As a test, next time you come into a sweeping 270 or so degree off-ramp with
nobody near you, come in a little hot and brake instead of coasting in. Try
and notice where your foot is, without actually thinking about it. You may
be surprised to find your foot doesn't come ALL the way off the brake until
you are well into the corner. You just trail braked. The hardest part of
this exercise is not thinking about it because thinking about it will mess
up your natural or learned rhythm. Try having someone else watch but not
tell you when they will be watching.
 
Now back to our regularly scheduled tire segment...
 
Charles, have you ever had you toe checked after dropping the car 1? It is
possible that drop may be messing up your toe and affecting tire wear. I
don't know enough about our car's geometry yet to be sure how much, but a
change in ride height almost always affects both camber, and toe and
depending on geometry, sometimes in an undesirable direction, or to a
greater degree than one would expect. (Should we start a bump steer thread?)
 
Wear in the center of a tire is almost always over inflation. It is also
very easy to check with a pyrometer. If it is hotter in the center, you are
over inflated. Tire wear relative to the triangles on the sides of tires is
not an indication of inflation in either direction. They sort of indicate
the end of the tread and beginning of the side wall, and if you are wearing
near or past them you should probably change pressure or your driving
habits, but which they cannot tell you.
 
36/38 seams high for cold pressures on our heavy beasts. I would bet that
hot, they are at or close to 50PSI starting that high. While conditions make
me mess with them, my typical HOT pressures are 40-44 front, and 35-39 rear.
 
I'm currently running full tread 275x40x17 Kuhn Ecsta V700s on my TT. When I
over drive them, yes they eat the shoulders, but I have them flipped and eat
up the other side, yummy. :-) Full tread on these will actually handle light
rain as long as there isn't any real standing water. I haven't run a set of
these to cord yet. the rubber appears to get harder just as you get them to
slicks. Anybody else notice this? Shaving tires is almost a religious thing.
Some believe, some don't. I like to use every mm of tread depth I pay for
even if it means I am slower while I chew on the first few mm. I keep
threatening to try a set of Hoosiers which start with no perceptible tread
depth, but I know I will get addicted to them and then be up to a $800 per
set "fix" that lasts only 1/2 as long as my $600 a set Kumhos... (Your
mileage may vary...)
 
It is hard to buy other go fast goodies as well as track time when your
racing budget goes to tires. I could up the racing budget, but that would
cut into the computer budget... New hard drive, race tire, new video card,
race tire... decisions, decisions...
 
- -Dean
 
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End of Team3S: 3000GT & Stealth V1 #999
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