--

From: owner-stealth-3000gt-digest@list.sirius.com (Team3S Digest)
To: stealth-3000gt-digest@list.sirius.com
Subject: Team3S Digest V1 #353
Reply-To: stealth-3000gt
Sender: owner-stealth-3000gt-digest@list.sirius.com
Errors-To: owner-stealth-3000gt-digest@list.sirius.com
Precedence: bulk


Team3S Digest       Wednesday, December 8 1999       Volume 01 : Number 353




----------------------------------------------------------------------

Date: Tue, 7 Dec 1999 13:59:39 -0800
From: "Gross, Erik" <erik.gross@intel.com>
Subject: RE: Team3S: FrontWheelDrive: Taking off tooQuickly In 1st?

I'm not sure if this is completely related or not, but I've been meaning to
ask you guys about this:

In the last 6 months, I'm pretty sure the tendency of my car to wheel hop
(only in 1st gear) has gone up significantly.  It's been a gradual thing,
but I just don't remember it hopping as much this time last year.  It
doesn't help living the PNW where it's almost always wet in the winter.

What I'm seeing(when I'm taking off from a stop and trying to go fast):

Dry:
Slip the clutch a bit and ease into the throttle gradually with it
ending up almost floored by 4000RPM or so.  Sometimes looses traction on
less-than-perfect roads, but I can usually get at least close to floored.
Completely flooring it right after the clutch is out will lose traction and
get wheel hop at about 5300RPM

Wet(damp, not puddles):
Same as dry, except can't get it anywhere near floored in 1st until
6500RPM (when I'm shifting anyway).  Any sudden changes in throttle position
or getting the throttle above about 3/4 floored before 6000RPM loses
traction and I get skull-rattling wheel hop!  As soon as I notice it, I
either lay off the throttle until I get traction or just grab 2nd (depending
on what RPM I'm at).  The wheel hop is so bad that I'm pretty sure I'd break
something if I let it go for more than a few seconds.

What ever happened to just spinning the wheels?  I mean, my car *never* just
spins the wheels anymore when I lose traction (not that I try too often), it
just goes from acceleration to crazy wheel hopping!  The only significant
changes I've made in my car in the last year are wider, better tires (245
Firehawks), and a K&N (which the butt-dyno doesn't think did very much).
What's going on here?  I know I've seen FWD cars spin tires without hopping,
so is this a 3000GT thing, or is there something going out on my car?  Would
this indicate that my front struts aren't providing enough resistance to
movement and the springs are just bouncing around, causing wheel hop?  Or
something else?


Thanks!
- --Erik

- ------                                             ----------
Erik Gross                                         DuPont, WA
'95 Pearl White 3000GT (NA, DOHC, 5-speed)          64,000 mi
Firestone Firehawk 245/50/ZR16 tires, stock wheels
Magnacor KV85 spark plug wires, NGK plugs @ 0.040"
K&N FIPK (57-1500), resonator intact
Mobil 1 10W30 Synthetic w/ OEM oil filter
***No more ticking lash adjusters!  Treated with GM EOS, BG
   44K FI cleaner. Change oil every 2000mi, filter 4000mi ***
- -------------------------------------------------------------

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------------------------------

Date: Tue, 7 Dec 1999 16:19:49 -0600
From: "Benson \"elmagoo\" Russell" <benson@2015.com>
Subject: RE: Team3S: FrontWheelDrive: Taking off tooQuickly In 1st?

Well I know it's not just a 3000GT thing, because my 94 eclipse did the
same.  Mostly in wet weather because it was hard to spin the tires in that
(it was only a GS, non-turbo).  But when I got the 3000, helll it was easy
to spin those suckers :).  But sometimes I'll get to bouncing on a take-off
as well.


Latuh fuh U,
Benson
benson@2015.com

"-Do you ever have second thoughts?
- -When do I ever have first thoughts?"

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------------------------------

Date: Tue, 7 Dec 1999 16:26:17 -0600
From: Matt Jannusch <MAJ@BigCharts.com>
Subject: RE: Team3S: FrontWheelDrive: Taking off tooQuickly In 1st?

> Well I know it's not just a 3000GT thing, because my 94
> eclipse did the same.  Mostly in wet weather because it was
> hard to spin the tires in that (it was only a GS, non-turbo).
> But when I got the 3000, helll it was easy to spin those
> suckers :).  But sometimes I'll get to bouncing
> on a take-off as well.

Be careful with this.  Wheel hop is a great way to snap driveshafts.  The 3/S shafts are stronger than the DSM ones (in which older shafts snap a lot during wheel hop), but when the wheels grab during hopping there are enormous forces applied to the driveshafts.

- -Matt
'95 3000GT Spyder VR4

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------------------------------

Date: Tue, 07 Dec 1999 14:46:37 -0800
From: Ken Middaugh <Kenneth.Middaugh@gat.com>
Subject: Team3S: Cracked cross-drilled rotor

(semi-long post)

As you may recall, I attended an SCCA High Performance Car Clinic this past
Saturday.  It was the second time I have been on a track with a street car, both
times with my '91 VR4, and it was tremendous fun.  The actual track time
amounted to about a miniscule 36 minutes over 3 sessions, but it was only $60.
It was supposed to be 45 minutes of driving but session lengths were reduced due
to a track accident that required the ambulance to be gone about an hour.

While driving home through 120 miles of back roads, I noticed my brakes were
thumping and it was getting worse.  I didn't notice this on the track.  Before
the 3rd session, I checked my front pads and they appeared to be about 2/3
used.  I figured worn pads might be the culprit.  No problem I thought.  I took
2 extra sets of pads to the track so I'd just replace them in the morning.

Well, I still had adequate pad life left.  The problem turned out to be a crack
in my cross-drilled rotor.  The crack was on the outboard side of the rotor,
through a cross-drilled hole closest to the outside diameter of the rotor.  It
extended all the way to the edge of the rotor and also extended inward radially
toward the center about the same distance.  It was not a surface crack as the
crack was visible on rotor's edge to be all the way through the outboard side of
the rotor.

Allright, I've kept you in suspense long enough.  These are KVR cross-drilled
rotors and KVR semi-metallic Carbon Fiber pads.  I installed them about 9 months
ago.  They were used exclusively on the street until the 36 minutes of track
time this past Saturday.  However, I do regularly brake abruptly from 110 - 60
mph about 2-4 times a week on the way home from work.  Two weekends ago while
cleaning out the brake dust from the holes, I noticed that all holes had what
appeared to be hairline surface cracks all oriented radially from the center.

I've been very happy with the KVR pads.  They stop very well after you heat them
up.  The first one or two stops aren't so great though.  They seemed to last
well too, through 9 months and 50 miles of track time.  My buddy with a 92 VR4
installed new BBQ treated KVR pads for the same event.  His looked barely used
after the 2nd session.  Also they do dust more than stock pads.  For $63 a set,
these are great pads!

The rotors are another story though.  KVR will replace rotors within 2 months of
purchase, or will prorate them up to a year.  Most likely, the problem isn't a
KVR issue, but rather an issue of cross-drilled rotors since I've heard similar
stories about other cross-drilled rotors.  Regardless, I think I will try the
Porterfield non-cross-drilled, cryogenically treated rotors for my next set.

Regards,
Ken
- --
I'm surprised you stopped me officer, Dunkin Donuts has a 3 for 1 special!

Ken Middaugh (858) 455-4510
General Atomics
San Diego
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------------------------------

Date: Tue, 07 Dec 1999 14:51:16 -0800
From: Ken Middaugh <Kenneth.Middaugh@gat.com>
Subject: Re: Team3S: FrontWheelDrive: Taking off tooQuickly In 1st?

Maybe your struts aren't damping as well as they did a year ago.  How old are
they?

- --
I'm surprised you stopped me officer, Dunkin Donuts has a 3 for 1 special!

Ken Middaugh (858) 455-4510
General Atomics
San Diego
For subscribe/unsubscribe info, our web page is http://www.bobforrest.com/Team3S.htm

------------------------------

Date: Tue, 07 Dec 1999 17:00:49 -0600
From: Merritt <merritt@cedar-rapids.net>
Subject: Re: Team3S: Cracked cross-drilled rotor

>
>While driving home through 120 miles of back roads, I noticed my brakes were
>thumping and it was getting worse. <snip> The problem turned out to be a
crack
>in my cross-drilled rotor.  The crack was on the outboard side of the rotor,
>through a cross-drilled hole closest to the outside diameter of the rotor.
It
>extended all the way to the edge of the rotor and also extended inward
radially
>toward the center about the same distance.  <snip>  I think I will try the
>Porterfield non-cross-drilled, cryogenically treated rotors for my next set.
>
Good choice. Run stock pads on the street and Porterfield R4 pads on the
track, and it oughta work just fine for you.

Cross-drilled and slotted rotors are just for show. On our cars, they break
if you use them hard.

It would  help if you'd run some cooling air in there. You probably got
those KVR rotors up to about 1300 degrees. The Porterfield rotors will be
OK, but such high temps wear out pads quickly.

Rich/old poop/94 VR4/somebody stop me!

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------------------------------

Date: Tue, 7 Dec 1999 15:10:43 -0800
From: "Mohler, Jeff" <jeff.mohler@netapp.com>
Subject: RE: Team3S: Cracked cross-drilled rotor

I've been very happy with the KVR pads.  They stop very well after you heat them
up.  The first one or two stops aren't so great though.  They seemed to last
well too, through 9 months and 50 miles of track time.  My buddy with a 92 VR4
installed new BBQ treated KVR pads for the same event.  His looked barely used
after the 2nd session.  Also they do dust more than stock pads.  For $63 a set,
these are great pads!

The rotors are another story though.  KVR will replace rotors within 2 months of
purchase, or will prorate them up to a year.  Most likely, the problem isn't a
KVR issue, but rather an issue of cross-drilled rotors since I've heard similar
stories about other cross-drilled rotors.  Regardless, I think I will try the
Porterfield non-cross-drilled, cryogenically treated rotors for my next set.
- ---

1)  I think i'll be buying those pads!

2)  I belive, that crossdrilling creates weak spots in the rotors, as the rotor
heat cycles at different rates around the holes.  I firmly recomend slotting, as
it doesnt remove as much thermal mass, and doesnt affect how the metal
grows/shrinks.



Anyone know a place in the Bay-Area that will slot a rotor for me?
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------------------------------

Date: Wed, 8 Dec 1999 00:09:05 +0100
From: "R.G." <robby@freesurf.ch>
Subject: Team3S: Heads, Valves

Ok, call be the lucky guy :) I'm getting an 91 motor (92'Stealth TT, US) to
part out as it had the belt slipping and damaged all the valves (at least).
I'm getting the heads for free (hehe) as I helped the guy to install a new
engine (he paid $2700 from a car who had a rollover with 15k miles) and they
are not sellable as they need some work on the valves, adjusters and maybe
more.

Questions :
- - Are there any lightweight valves available. Where ? how much ?
- - Cams : Any idea about hotter cams ?
- - what are the stock 9b turbos with about 28k miles on them, mint condition,
worth ? The guy needs some money out of the additional costs he had but they
would not be expensive. Of course oil lines, water pump and some other parts
may be available as well but I have first to check the engine puzzle
(everything is in boxes, gulp)

Thanks for any input,
Roger
93'3000GT TT

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------------------------------

Date: Tue, 7 Dec 1999 15:30:42 -0800
From: "Mohler, Jeff" <jeff.mohler@netapp.com>
Subject: RE: Team3S: Cracked cross-drilled rotor

Cross-drilled and slotted rotors are just for show. On our cars, they break
if you use them hard.
- ---

Then how do you solve the gassing problem?

Im not talking OVERLY slotting a rotor btw..
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------------------------------

Date: Tue, 7 Dec 1999 15:36:23 -0800
From: "Gross, Erik" <erik.gross@intel.com>
Subject: RE: Team3S: FrontWheelDrive: Taking off tooQuickly In 1st?

> -----Original Message-----
> From: Matt Jannusch [mailto:MAJ@BigCharts.com]
>
> > sometimes I'll get to bouncing on a take-off as well.
>
> Be careful with this.  Wheel hop is a great way to snap
> driveshafts. 

Yeah, definitely!  I cringe every time it happens, and it is quite rare when
I'm careful (99.5% of the time).  I usually end up feathering the throttle
and "feeling" for the edge as I depress the throttle.  If I feel it start to
slip, I back off slightly.  Maybe I'm just remembering fondly, but it seems
that point where things start to slip is sooner than last year...that's what
bothers me:) 

> From: Ken Middaugh [mailto:Kenneth.Middaugh@gat.com]
>
> Maybe your struts aren't damping as well as they did a year
> ago.  How old are they?

I'm wondering the same thing...how much mileage do you typically get out of
the stock struts/shocks?  I've figured I'll just do the whole suspension
(well, struts, shocks, and springs anyway:) when the stock ones go south,
but I thought I'd get more than 65,000 miles outta them.  My thinking is
that I should be able to take the stock struts/springs off as a unit and
replace them with aftermarket ones and not have to fool around with spring
compressors and stuff (most aftermarket springs aren't compressed when not
loaded, but the stock ones are, right?)


- --Erik

P.S.

The rears seem to be fine, so maybe I could put new struts/lowering
springs on the front and leave the rear stock:)  I wonder how that'd handle?
It'd almost look like an old American muscle car with a jacked-up rear end:)
That'd be a sight...for about 10 minutes, and then I'd have to shoot myself
for looking like a rice-boy-wannabe-castmember-of-Grease.

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------------------------------

Date: Tue, 07 Dec 1999 17:38:53 -0600
From: Merritt <merritt@cedar-rapids.net>
Subject: RE: Team3S: Cracked cross-drilled rotor

>Cross-drilled and slotted rotors are just for show. On our cars, they break
>if you use them hard.
>
>Then how do you solve the gassing problem?
>Im not talking OVERLY slotting a rotor btw..

Get air flow to them, I guess. I didn't know gassing was a problem.
Having BROKEN two slotted rotors at the hub, I'll take gassing problems any
day, whatever they are.

Rich/old poop/94 VR4/somebody stop me!
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------------------------------

Date: Tue, 7 Dec 1999 16:01:31 -0800
From: "Darcy Gunnlaugson" <wce@telus.net>
Subject: Re: Team3S: Cracked cross-drilled rotor

Hey Rich;

When are you going to get some pics of your brake coolong system available
to those of us who're interested?? Weak links with fixes need sites to
inform :-)

Darc

snip

>Cross-drilled and slotted rotors are just for show. On our cars, they break
>if you use them hard.
>
>It would  help if you'd run some cooling air in there. You probably got
>those KVR rotors up to about 1300 degrees.

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------------------------------

Date: Tue, 07 Dec 1999 16:22:56 -0800
From: Ken Middaugh <Kenneth.Middaugh@gat.com>
Subject: Re: Team3S: Cracked cross-drilled rotor

> When are you going to get some pics of your brake coolong system available
> to those of us who're interested?? Weak links with fixes need sites to
> inform :-)

When will one of our list entrepeneurs begin making and selling front brake
backing plates with hose barbs welded on so one could attach cooling hoses?

- --
I'm surprised you stopped me officer, Dunkin Donuts has a 3 for 1 special!

Ken Middaugh (858) 455-4510
General Atomics
San Diego
For subscribe/unsubscribe info, our web page is http://www.bobforrest.com/Team3S.htm

------------------------------

Date: Tue, 7 Dec 1999 19:29:22 EST
From: Klusmanp@aol.com
Subject: Team3S: What does the "J" stand for?

I've been looking for rims recently and trying to match the dia. and width of
the stock rims. For '91 VR4 the stock rim is 17 x 8.5J - anybody know what
the "J" is for in this spec?

Thanks.
Paul Klusman
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------------------------------

Date: Tue, 07 Dec 1999 16:34:31 -0800
From: Ken Middaugh <Kenneth.Middaugh@gat.com>
Subject: Re: Team3S: FrontWheelDrive: Taking off tooQuickly In 1st?

"Gross, Erik" wrote:
>
> > -----Original Message-----
> > From: Matt Jannusch [mailto:MAJ@BigCharts.com]
> >
> > > sometimes I'll get to bouncing on a take-off as well.
> >
> > Be careful with this.  Wheel hop is a great way to snap
> > driveshafts.
>

> I'm wondering the same thing...how much mileage do you typically get out of
> the stock struts/shocks?  I've figured I'll just do the whole suspension
> (well, struts, shocks, and springs anyway:) when the stock ones go south,
> but I thought I'd get more than 65,000 miles outta them.  My thinking is
> that I should be able to take the stock struts/springs off as a unit and
> replace them with aftermarket ones and not have to fool around with spring
> compressors and stuff (most aftermarket springs aren't compressed when not
> loaded, but the stock ones are, right?)

I guess between 40,000 - 80,000 miles depending on how harsh the roads and
environment are where you live.  Here in So. Cal, I replaced my struts at 80K
and could of done it earlier since they were so noisy/clunky.  I also installed
Eibach Pro springs at the same time.  The front springs are under load so you do
need a spring compressor.  I just removed the assemblies, and took them to a
tire shop.  They swapped the hardware onto the new struts & springs for $40.

- --
I'm surprised you stopped me officer, Dunkin Donuts has a 3 for 1 special!

Ken Middaugh (858) 455-4510
General Atomics
San Diego
For subscribe/unsubscribe info, our web page is http://www.bobforrest.com/Team3S.htm

------------------------------

Date: Tue, 07 Dec 1999 18:43:38 -0600
From: Merritt <merritt@cedar-rapids.net>
Subject: Re: Team3S: Cracked cross-drilled rotor

>
>When are you going to get some pics of your brake coolong system available
>to those of us who're interested?? Weak links with fixes need sites to
>inform :-)
>
I'm still fiddling with the scoops. Now that I lowered the car, my scoops
hit on every road bump. I'm trying to figure out how to build a
spring-loaded scoop that will be driven up when it hits an obstacle, then
springs back. Now, they just rip off on driveways and dips in the road. I
may remove the entire panel under the fascia and try something else.

Actually, it's a very boss scoop -- it's black, round, plastic, about 3 in.
dia., and leads to a 2x2 in. square opening. The 2.5 in. hose fits in there
very nicely, and the scoop fits right into the 4x6 openings under the
fascia. I found them in the plumbing section at Menard's for about $1.50
each.  They look mean sitting under there.  Alas, they hang down too a
little too far for my car. I have a set of white clothes dryer vents that
might work -- I'll try those next. The very best scoops were some huge 2x8
plastic gutter downspouts that I found at Payless Cashways, but they
protruded down too far, and I ripped them off in the grass at Blackhawk
Farms.

In general, my brake cooling system consists of:

1. Removed front inner fender well to promote air flow.
2. Removed backing plates from front rotors to promote air flow.
3. Scoops under front bumper (centered over 4x6 openings under fascia)
4. 2.5 in. hose from scoop to middle of the wheel (I gave up trying to fit
it into the caliper opening, because if it slips it tears the halfshaft
boot). The hose is tie-wrapped to the lower stabilizing arm.
5. Water hoses run to rotors from the windshield washer pump. I squirt
water into the center of the rotor, right where the vent holes are. I don't
spray directly on the wiped surface.  Prior to an event, I remove the line
to the windshield washer jets (at the upper right hand corner of the engine
compartment), and T it into the two hoses running to the rotors. I remove
the windshield wiper motor plug, so the wipers don't work.  Then, when I
need to cool my brakes, I give them a shot of water with the windshield
washer lever. A full reservoir lasts about 20 minutes. Seemed to work at
Road America. When the reservoir is empty, the light comes on. Handy.

If I ever stop fiddling with the brakes, I'll take a picture of them.

Rich/old poop/94 VR4/somebody stop me!
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------------------------------

Date: Mon, 6 Dec 1999 21:29:14 -0500
From: "Michael McWilliams" <CelMike@email.msn.com>
Subject: Re: Team3S: Thanks for answers

>
>Has anyone on the list actually destroyed a pair of turbos due to oil
coking in the bearings?  Just wondering if this is actual truth or just
something that sounds like a good idea.  Obviously it is best to cool down
the turbos, but I'm just wondering how many actual failures occur.
>
>-Matt
>'95 3000GT Spyder VR4
>15G's  :-)
>


Well, the reason I'm having my turbos rebuilt into 15Gs is because the rear
turbo was totally shot and the front one was on its way out.  The rear turbo
had lots of in/out and side to side play in the shaft and leaked oil badly.
The front one made a scraping sound when spun.

Since I've only put about 4k miles on the car since I've owned it, I don't
know if it was lack of cool-down, infrequent oil change, non-synthetic oil
or a combination of the three which did my turbos in, but I'm sure a
cool-down period can't hurt.



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------------------------------

Date: Tue, 7 Dec 1999 20:53:30 -0800 (PST)
From: George Kuo <amkreadgto@yahoo.com>
Subject: RE: Team3S: Cracked cross-drilled rotor

I believe cross-drilled are NOT just for show.. but
they are not intended for long hard abuse.. maybe just
a couple of weekend events (if you're lucky)..

- --- "Mohler, Jeff" <jeff.mohler@netapp.com> wrote:
> Cross-drilled and slotted rotors are just for show.
> On our cars, they break
> if you use them hard.
> ---
>
> Then how do you solve the gassing problem?
>
> Im not talking OVERLY slotting a rotor btw..
> For subscribe/unsubscribe info, our web page is
> http://www.bobforrest.com/Team3S.htm
>

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------------------------------

Date: Wed, 8 Dec 1999 11:01:11 +0100
From: "R.G." <robby@freesurf.ch>
Subject: Re: Team3S: Cracked cross-drilled rotor

> I believe cross-drilled are NOT just for show.. but
> they are not intended for long hard abuse.. maybe just
> a couple of weekend events (if you're lucky)..

Guys, may I remind you that there is a german car maker that runs pretty good brakes on their cars ? Yes, Prosche uses crossdrilled rotors and I tell you the stuff holds ! But check the design as the holes are already included in the cast and are drilled out fully for finishing. this is the same with the Bremsa brakes. Even more in Europe we do have a min. distance from the edge of the disk to the first hole as well as the max diameter of the holes.

The non-expensive crossdrilled rotors got the holes after the production is done. The advantage is additional cooling as well as giving the gases a chance to go away from the pads. Furthermore, some dust will go away there as well as water does.

IMHO, get only crossdrilled ones if you are sure they will do their job well. For this I can only tell of the Porsche (MovIt), Brembo and Bremsa (both the same manufacturer in Italy) rotors.

BTW, even Baer does tell you that their crossdrilled rotors tend to brake on circle track events and they sold me the ones with only four slots for the Z28. Damn good brakes !

Roger
93'3000GT TT

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------------------------------

Date: Wed, 08 Dec 1999 09:43:48 -0500
From: "John T. Christian" <jczoom@geocities.com>
Subject: Team3S: Re: Adventure in braking

Hi all,

Bryan Schwieg wrote:
>
> Hello John,
> I was reading a post you wrote about Brad's big brakes and the use of stock rims. I'm looking to get his brakes, but would like to use my stock '92 stealth rims. Brad says they won't work.
- ---> Brad is correct, they will not work as is.

Are you saying they will if you use supra rotors? Please elaborate,
what do I have to mod? The wheels? rotors?
- --->You would have to machine away some of the weld metal and part of
the spoke and part of the inner diameter of the rim.  Its safer and
easier to buy new/used rims.  I'd never try modifying a rim for safety
reasons because I run road courses.

In order to fit the Supra rotors properly, you must machine away some of
the thin pilot diameter so the rotor fits flat against the TT hub.  Its
a simple process, IF you have a BIG lathe.

If you have a lathe big enough to turn away enough stock of the rim to
provide clearance, then cutting the inner hat of the rotor will be a
piece of cake.

Good luck.

John Christian



> Thanks for your help,
> Bryan

- --
JCZoooM  93 TT 12.46@109Mph   Now with Porsche brakes
Email---> JCZooM@iname.com 
http://www.geocities.com/motorcity/flats/4538
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------------------------------

Date: Thu, 9 Dec 1999 00:48:45 EST
From: MitsuVR41@aol.com
Subject: Team3S: Vr-4 launching

Okay guys,   95  stock VR-4.    I'm running in to some 400hp plus power
Camaros and Mustangs that are pulling on me and making me loose confidence in
my STOCK machine.  These are straght runs of course.   Any ideas on launch
techniques or is it time to UPGRADE the VR-4??  This is embarrasing.   One
way I launch is to hold at 6000 RPM and ride the clutch to fire out of the
hole. Call me stupid, but this seems to be the FASTEST launch technique. I
still get beat by a half car length.  Is this too rough on my car?  Is there
a better way?  What should I do .    Thanks       Shannon 95 VR-4
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