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(Team3S Digest)
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Team3S Digest V1 #357
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Team3S Digest Monday,
December 13 1999 Volume 01 : Number
357
----------------------------------------------------------------------
Date:
Sun, 12 Dec 1999 14:07:04 -0800
From: "Bob Forrest" <
bf@bobforrest.com>
Subject: Re:
Team3S: Time/Weight formula?
- -----Original Message-----From:
TurboDrvn@aol.com>>
Aso8@aol.com writes:
>> All things
being equal, if a cars weight is reduced by 100lbs
>> what is the
expected 1/4 mile time reduction?
>> Is there a simple formula to
figure this?
>
> This takes me back to the Buick
Grand National
days...Traditionally, I
>thought it was the rule of
thumb that for every 100lbs. you reduce
you cut
>off about a tenth of a
second in your 1/4 mile times (granted all
other
>conditions/variables
are consistently the same/equal; temperature
of day,
>temperature of
car, tires, same launching techniques (rpm's, boost,
>feathering/dropping
clutch, etc.). So if you reduce a total
weight
of
>500lbs...chances are you'll cut off a half second from your
1/4
mile times.
>Anyone else agree or disagree??
Yup, that's the
number I remember too-- 0.1 sec/100 lbs. I remember
in the 70's, I had
just lost a drag by .04 sec and some famous racer
came by and said,
"Your lady is 50 lbs lighter... If she had been
driving, you would
have won that one!" Then again, he could have
been referring to my
barely-passable racing skills...
:-)
Forrest
For subscribe/unsubscribe info,
our web page is
http://www.bobforrest.com/Team3S.htm------------------------------
Date:
Mon, 13 Dec 1999 00:18:14 +0100
From: "R.G." <
robby@freesurf.ch>
Subject: Re:
Team3S: apex avc-r installation
> 1. Do I need to take the ECU unit
out or can I wire it in place from the
> drivers
side?
No
> 2. Do the wiring harnesses need to be removed from
the ECU, do they just
pull
> out, or is there a clip I need to release.
Can I release the harnesses
with
> the unit in place or do I have to
remove the screws that hold the ECU in
> place before I can release the
harnesses?
No, just press the connectors on the upper side (i.e. towards
the radio) and
pull them out.
> 3. The Apex instructions on page 16
shows ECU wiring diagrams. None appear
to
> match up with our
cars.
No, your car uses M2-a and is correct.
> 4. With the
correct orientation to the wires established, which harness
and
> wire
# and color would I connect the following wires from the avc-r
to:
> a. Apex Red wire to unknown location of IG
power
......
> f. Apex white wire to unknown
location of speed signal
As described in M2-a. There is no problem, just
straight
forward.
>
What are my advantages and disadvantages with the RPM or
the
>
signal injector?
Put a toggle switch in between if you want both
functions.
> 5. Does the old solenoid valve need to be disconnected
from it's
electrical
> source? Should the inlets be cap off, left open
or connected to each other
if
> I am to leave it connected to it's
electrical source?
Connected, hose and inled capped off.
> 6.
Does it matter if I mount the new Solenoid horizontal or
vertical?
Where
> is a good place to mount it.
No and try to
have not too long hoses.
> 7. Should I attach the pressure sensor
vacuum hose to the fuel vacuum
line,
> or will any vacuum line
do?
No, use the fuel pressure line that comes out of the
plenum.
> Where is a good place to mount it.
Close to the
source.
> 8. Where is the best (easiest) place to snake the new
harness into the
engine
> compartment?
Left or right rubber
gromet in the firewall.
Have a look at my Blitz installation page for
some pics and details. http://
www.geocities.com/swisscars/3000gt.htmlRoger
93'3000GT
TT
For subscribe/unsubscribe info, our web page is
http://www.bobforrest.com/Team3S.htm------------------------------
Date:
Mon, 13 Dec 1999 00:12:14 -0500
From: Bill Wagner <
wagner@sprynet.com>
Subject: Re:
Team3S: Time/Weight formula?
Not that I have too much time on my hands
tonight, but I was curious, so
I took Barry's formula and re-arranged it as
follows:
t=5.825*(weight/285)^1/3, where t is 1/4 mile time, and ^1/3
means take the
cubic root. Here's what I got using an HP of 285 and
varying the weight from
3800 down to 3400 lbs:
t=13.8, weight @3800lbs
t=13.69, weight
@3700lbs
t=13.57, weight @3600lbs
t=13.44, weight @3500lbs
t=13.31,
weight @3400lbs
Barry, where did you get these formulas
from?
Thanks,
Bill Wagner
"Barry E. King"
wrote:
>
> The following formulae are approximations and will give
you a ballpark idea
> of what you might expect in an ideal
situation.
>
> HP = weight (lbs) / (ET (seconds) / 5.825)^3
>
> -or-
>
> HP = weight (lbs) * (trap speed (MPH) /
234)^3
>
> So in your case, you'll need to have some idea of
HP. You could also come
> up with a factor by substituting 1 for HP
and 100 for weight which would
> give you the improvement per HP/100
lbs.
>
> These
>
> Barry
>
> >
-----Original Message-----
> > From:
owner-stealth-3000gt@list.sirius.com>
> [
mailto:owner-stealth-3000gt@list.sirius.com]On
Behalf Of
Aso8@aol.com> > Sent:
Sunday, December 12, 1999 8:46 AM
> > To:
stealth-3000gt@list.sirius.com>
> Cc:
Aso8@aol.com> > Subject:
Team3S: Time/Weight formula?
> >
> >
> > All things
being equal, if a cars weight is reduced by 100lbs
> > what is the
expected 1/4 mile time reduction?
> > Is there a simple formula to
figure this?
> > Tks Arty
> > For subscribe/unsubscribe info,
our web page is
> >
http://www.bobforrest.com/Team3S.htm>
>
>
> For subscribe/unsubscribe info, our web page is
http://www.bobforrest.com/Team3S.htmFor
subscribe/unsubscribe info, our web page is
http://www.bobforrest.com/Team3S.htm------------------------------
Date:
Sun, 12 Dec 1999 22:18:17 -0700
From: "Barry E. King" <
beking@home.com>
Subject: RE: Team3S:
Time/Weight formula?
I snagged them from the web somewhere at some point
in time. I have seen
them in several places. They are clearly
estimates, and crude ones at that,
but they apepar to be "in the
ballpark".
It is interesting to note that the .5 sec per 500 lbs
generality posted
previously more or less agrees with your
formula.
Barry
> -----Original Message-----
>
>
Not that I have too much time on my hands tonight, but I was curious, so
>
I took Barry's formula and re-arranged it as
follows:
>
>
t=5.825*(weight/285)^1/3, where t is 1/4 mile time, and ^1/3
> means take
the cubic root. Here's what I got using an HP of 285 and
> varying the
weight from 3800 down to 3400 lbs:
>
> t=13.8, weight
@3800lbs
> t=13.69, weight @3700lbs
> t=13.57, weight
@3600lbs
> t=13.44, weight @3500lbs
> t=13.31, weight
@3400lbs
>
> Barry, where did you get these formulas
from?
>
> Thanks,
> Bill Wagner
For
subscribe/unsubscribe info, our web page is
http://www.bobforrest.com/Team3S.htm------------------------------
Date:
Mon, 13 Dec 1999 11:27:06 EST
From:
LotoBoost@aol.comSubject: Re: Team3S:
EGT meter
In a message dated 12/10/99 3:53:42 PM !!!First Boot!!!,
vr4@bahnhof.se writes:
<<
Hi
I'm looking for an EGT meter, I want feedback regarding brand, quality
and
price.
What's best, digital or analog?
Also, is the best
location in the rear exhaust manifold? What temperature
can I expect in the
rear exhaust?
Best regards
>>
Hey what's
up.. I'd look into the A'pexi EL series or the new (just released
so
not that many have them) HKS gauges. Both the EL and the HKS EGT's have
peak hold AND 30-second playback. The 30-second playback feature has
been
very usefull when tuning, especially with the 30-second playback boost
gauges..
HKS has slightly better quality than A'pexi, but then again
the A'pexi gauges
are around $50 cheaper.. The main problem with the
A'pexi gauge is that the
probe is fairly long, whereas the HKS probe is half
as long.
I'd recommend installing the EGT in the front manifold where the
three merge.
Look for 850-925max temps at 17-19psi.
Hope this
helps,
Mike
Best et: 11.4 Best mph: 122 15G's
New setup
13.00@122.5 2.39 60-foot Larger Turbos
www.AlteredAtmosphere.com3000GT/Stealth
Headquarters
For subscribe/unsubscribe info, our web page is
http://www.bobforrest.com/Team3S.htm------------------------------
Date:
Mon, 13 Dec 1999 16:53:02 EST
From:
Klusmanp@aol.comSubject: Team3S: What
year styling change on 17" rims?
Is there any change in the stock
17" rim styling between '94 and '97 VR4? I'm
looking at buying two sets
of used chrome wheels, one is a '94 and one is a
'97. I'm thinking about
buying both sets and using the best wheels from each.
Thanks,
Paul
Klusman
For subscribe/unsubscribe info, our web page is
http://www.bobforrest.com/Team3S.htm------------------------------
Date:
Mon, 13 Dec 1999 16:04:47 -0600
From: Matt Jannusch <
MAJ@BigCharts.com>
Subject: RE:
Team3S: What year styling change on 17" rims?
> Is there any
change in the stock 17" rim styling between '94
> and '97 VR4? I'm
looking at buying two sets of used chrome
> wheels, one is a '94 and one
is a '97. I'm thinking about
> buying both sets and using the best wheels
from each.
Both the styling and the sizes are different. The '94 is
a
simple spoke design, flat on the outer edge and is a 17" wheel.
The
'97 is "dimpled" on the flat edge of the spokes to give it
a little
more "technical" look and is an 18" wheel.
- -Matt
'95
3000GT Spyder VR4
For subscribe/unsubscribe info, our web page is
http://www.bobforrest.com/Team3S.htm------------------------------
Date:
Mon, 13 Dec 1999 16:51:37 CST
From: "Curt Gendron" <
curt_gendron@hotmail.com>
Subject:
RE: Team3S: What year styling change on 17" rims?
Actually, the
95-99 vr4 rims are 6 spoke 18" rims. The SL came in a 17"
chrome rim from 97-99. Check out my wheel page at
http://www.mn3s.org/wheels.html
before buying any rims so you can verify
what your
getting.
later,
Curt
Come join us at the Upper Midwest Gathering in
May. Go to
http://www.mn3s.org/upper-midwest.html
for details.
>From: Matt Jannusch <
MAJ@BigCharts.com>
>To:
stealth-3000gt@list.sirius.com>Subject:
RE: Team3S: What year styling change on 17" rims?
>Date: Mon, 13 Dec
1999 16:04:47 -0600
>
> > Is there any change in the stock
17" rim styling between '94
> > and '97 VR4? I'm looking at buying
two sets of used chrome
> > wheels, one is a '94 and one is a '97. I'm
thinking about
> > buying both sets and using the best wheels from
each.
>
>Both the styling and the sizes are different. The '94
is a
>simple spoke design, flat on the outer edge and is a 17"
wheel.
>The '97 is "dimpled" on the flat edge of the spokes to
give it
>a little more "technical" look and is an 18"
wheel.
>
>-Matt
>'95 3000GT Spyder VR4
>
>For
subscribe/unsubscribe info, our web page is
>
http://www.bobforrest.com/Team3S.htm______________________________________________________
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