Team3S: 3000GT & Stealth Monday, August 27
2001 Volume 01 : Number
590
----------------------------------------------------------------------
Date:
Sat, 25 Aug 2001 13:59:16 -0700
From: "Watkins, Jim" <
jim.watkins@terayon.com>
Subject:
Team3S: Spyder Radio System
Recently the amplifier in my Spyder
has developed a bad left front channel.
A search in the CAPS program for the
amplifier shows PNC 85301 but there is
no information on the proper part
number for the amplifier. I believe these
amplifiers are modified from
the standard VR4 configuration for better bass
response. Does anyone
have the correct part number to order?
Jim
95 Spyder
VR4
*** Info:
http://www.Team3S.com/Rules.htm
***
------------------------------
Date: Sat, 25 Aug 2001 23:15:24
-0500
From: "Jannusch, Matt" <
mjannusch@marketwatch.com>
Subject:
RE: Team3S: Spyder Radio System
> Recently the amplifier in my Spyder
has developed a bad left
> front channel. A search in the CAPS
program for the amplifier
> shows PNC 85301 but there is no information on
the proper part
> number for the amplifier. I believe these
amplifiers are
> modified from the standard VR4 configuration for better
bass
> response. Does anyone have the correct part number to
order?
I don't have the part number for you - my CAPS shows the same
information -
no data for a part number. I think you are correct that
they tweaked the
amp some for Spyder duty to make up for the lack of bass
when the top is
down. You could probably use a regular 3/S amp and just
pump more bass with
the EQ on the headunit to make up for it.
Sorry I
don't have any more info than that... Your dealer might be able to
ask
the right people the right questions and get a part number.
-
-Matt
'95 3000GT Spyder VR4
*** Info:
http://www.Team3S.com/Rules.htm
***
------------------------------
Date: Sun, 26 Aug 2001 01:16:46
-0500
From: "Todd D.Shelton" <
tds@brightok.net>
Subject: Re: Team3S:
Downpipes
- -----Original Message-----
From: Gross, Erik <
erik.gross@intel.com>
To: Team3S
List (E-mail) <
team3S@stealth-3000gt.st>
Date:
Friday, August 24, 2001 5:20 PM
Subject: RE: Team3S: Downpipes
>So
with all these posts about downpipes...
>
>Is it imperative that you
have equal backpressure on both banks' exhaust?
>For example if you used a
downpipe that removes the front and main cat and
>you *don't* gut your
rear pre-cat... It makes sense that for optimal
power,
>you'd
want the backpressures to be as close as possible. I'm wondering
if
>you had significantly more restriction on one bank, would it cause
problems
>(I don't know - vibrations, engine rocking, etc)? OTOH,
the stock downpipe
>presents significantly more resistance to smooth
airflow by the 90 degree
>bend as the banks' exhaust merge.
Anyone have a definitive answer?
>
>--Erik
-
----------------------------------------------------------------------------
Strange
you should ask since it so happens I recently had this setup
by
accident.
In short: I personally gutted both precats serveral
(4 or 5?) years ago.
A month ago I was down at my tuner's shop and we had to
pull the
downpipe for an unrelated job we were doing.
Lo and behold I
had "grown" a rear precat!
Apparently I had ended up with someone elses
precat during my last rebuild.
(only the rear)
I have been running about a
year (2 or 3K miles) with one rear precat and no
other cats.
There are
spare 3000/Stealth parts running all over the shop and it was a
simple
mistake.
I never had any idea nor experienced any noticable
problems.
In other words I had no clue one rear precat was still
there.
The car felt a little better after we once again gutted my new
found rear
cat but that may have just been me knowing we had just done
it.
I'm sure it help power-wise but it usually takes a bit more of an
increase
before
I *really* notice a good seat of the pants
difference.
I would have to believe it would be ideal to have equalized
flow on each
bank but I can
say that I couldn't tell the difference in my
case of less than ideal
balance.
- - tds
*** Info:
http://www.Team3S.com/Rules.htm
***
------------------------------
Date: Sun, 26 Aug 2001 20:54:34
+1200
From: "Steve Cooper" <
scooper@paradise.net.nz>
Subject:
Re: Team3S: Spyder Radio System
Subject: RE: Team3S: Spyder Radio
System
Why dont you just get it repaired?
Steve
Recently
the amplifier in my Spyder has developed a bad left
front channel. A
search in the CAPS program for the amplifier
shows PNC 85301 but there is no
information on the proper part
number for the amplifier. I believe
these amplifiers are
modified from the standard VR4 configuration for better
bass
response. Does anyone have the correct part number to
order?
*** Info:
http://www.Team3S.com/Rules.htm
***
------------------------------
Date: Sun, 26 Aug 2001 19:06:26
+0200
From: "Roger Gerl \(RTEC\)" <
roger.gerl@bluewin.ch>
Subject:
Re: Team3S: Downpipes
> Is it imperative that you have equal
backpressure on both banks' exhaust?
Backpressure against what ??
Usually, backpressure against the exhaust ports
of the heads is good in the
low rpm area and results in more torque. But the
turbo is already a
restriction (a big one !) and therefore the whole stuff
must be looked at a
different angle.
A turbine turns due to the pressure difference between
before and after the
turbine wheel. The more restrictive the exhaust after
the turbine wheel the
less the pressure difference that keeps the wheel
turned. In this case, the
pressure before the turbo must be higher to achieve
the same difference what
finally results in higher EGTs and unwanted
backpressure what results in
lean spots in the cylinder.
Not gutting
the rear-precat against an empty front pre-cat therefore may
result in a less
pressure-differential compared to the front one. This may
result in different
turbo load and therefore the rear turbo doesn't work as
good as the front
one.
This is the theory ... and in practical ? Nobody really knows !
EGT
differences from front to rear may be signs but this is difficult
to
interpret due to the design and the heat problems of the rear
bank.
Therefore, only pressure sensors infront and after the turbos could
tell but
nobody has them installed.
Under the line, I'd say no problem
if one pre-cat is not gutted. But the
higher the boost is turned up the more
it starts to count and the more the
difference between front and rear will
be. In the 1 bar region, there seems
not to be a problem at
all.
Roger
93'3000GT TT
www.rtec.ch*** Info:
http://www.Team3S.com/Rules.htm
***
------------------------------
Date: Sun, 26 Aug 2001 19:07:20
+0200
From: "Roger Gerl \(RTEC\)" <
roger.gerl@bluewin.ch>
Subject:
Re: Team3S: Euro CAPS and JDM CAPS
If anyone ever has a problem with
german just drop me an email ... German is
my first
language.
Roger
93'3000GT TT
www.rtec.ch> Ack. Was supposed to
be "verstande" as in "to understand" and the
> smellchecker didn't care
how is was smelled. Thanks.
*** Info:
http://www.Team3S.com/Rules.htm
***
------------------------------
Date: Mon, 27 Aug 2001 08:29:28
-0500
From: "Willis, Charles E." <
cewillis@TexasChildrensHospital.org>
Subject:
RE: Team3S: Spyder Radio System
Have you checked the connections in the
rear of the head unit? I think this
is a FAQ symptom.
>
-----Original Message-----
> From: Watkins, Jim
[SMTP:jim.watkins@terayon.com]
> Sent: Saturday, August 25, 2001 3:59
PM
> To: 'Team3S List (E-mail) '
> Subject: Team3S: Spyder Radio
System
>
>
> Recently the amplifier in my Spyder has
developed a bad left front
> channel.
> A search in the CAPS program
for the amplifier shows PNC 85301 but there
> is
> no information on
the proper part number for the amplifier. I believe
> these
>
amplifiers are modified from the standard VR4 configuration for better
>
bass
> response. Does anyone have the correct part number to
order?
>
> Jim
> 95 Spyder VR4
*** Info:
http://www.Team3S.com/Rules.htm
***
------------------------------
End of Team3S: 3000GT &
Stealth V1
#590
***************************************