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New Exhaust System Advice
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I have to throw my vote in with Scott on this one.
Larry
sandiego16v
----- Original Message -----=20
From: Scott F. Williams=20
To: Rabbit16v ; Scirocco List=20
Sent: Sunday, March 23, 2003 5:51 PM
Subject: RE: New Exhaust System Advice
In response to my rebuttal, Dave wrote:
> That's just what I said! :)
No, it ain't. My point is that *zero* backpressure is always best. =
However,
that zero backpressure can't come at the expense of reduced exhaust =
gas
velocity or output will be reduced. Is that what you said? Perhaps my
reading comprehension is off today, but I don't think so...
What you said before was:
"There is an ideal amount of back pressure for every motor. Too much =
is
restrictive and not enough messes with the vacuum effect or swirl or
something but causes a reduction in power also. If your running a =
turbo or
something then it's different but if it's just an N/A motor then there =
is an
ideal amount you just gotta find it."
I reiterate that *zero* backpressure is always best. There no amount =
of
backpressure that optimizes power. However, there will inevitably be a
certain amount of backpressure in any exhaust system tuned or not. The
backpressure itself, however, is always a hindrence and never a help. =
Thus,
there is no "ideal amount of back pressure for every motor".
This isn't a semantic disagreement. Rather, it is a fundamental =
controversy
that hotrodders have been debating since day one. Engineering =
principle
reveals the truth, however.
--
Scott F. Williams
NJ Scirocco nut
'99 Subaru Impreza 2.5 RS
Mazda 323 GTX turbo "assaulted" vehicle
Golf GTI 16v "rollycar"
ClubVAC: "Roads found. Drivers wanted."
_______________________________________________
Scirocco-l mailing list
Scirocco-l@scirocco.org
http://neubayern.net/mailman/listinfo/scirocco-l
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<DIV><FONT face=3DArial size=3D2>I have to throw my vote in with Scott =
on this=20
one.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Larry</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>sandiego16v</FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
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<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A href=3D"mailto:sfwilliams@comcast.net" =
title=3Dsfwilliams@comcast.net>Scott F.=20
Williams</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
href=3D"mailto:Rabbit16v@attbi.com"=20
title=3DRabbit16v@attbi.com>Rabbit16v</A> ; <A=20
href=3D"mailto:scirocco-l@scirocco.org" =
title=3Dscirocco-l@scirocco.org>Scirocco=20
List</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Sunday, March 23, 2003 =
5:51=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: New Exhaust System =
Advice</DIV>
<DIV><BR></DIV>In response to my rebuttal, Dave wrote:<BR>> That's =
just=20
what I said! :)<BR><BR>No, it ain't. My point is that *zero*=20
backpressure is always best. However,<BR>that zero backpressure can't =
come at=20
the expense of reduced exhaust gas<BR>velocity or output will be =
reduced. Is=20
that what you said? Perhaps my<BR>reading comprehension is off today, =
but I=20
don't think so...<BR><BR>What you said before was:<BR>"There is an =
ideal=20
amount of back pressure for every motor. Too much =
is<BR>restrictive and=20
not enough messes with the vacuum effect or swirl or<BR>something but =
causes a=20
reduction in power also. If your running a turbo or<BR>something =
then=20
it's different but if it's just an N/A motor then there is an<BR>ideal =
amount=20
you just gotta find it."<BR><BR>I reiterate that *zero* backpressure =
is always=20
best. There no amount of<BR>backpressure that optimizes power. =
However, there=20
will inevitably be a<BR>certain amount of backpressure in any exhaust =
system=20
tuned or not. The<BR>backpressure itself, however, is always a =
hindrence and=20
never a help. Thus,<BR>there is no "ideal amount of back pressure for =
every=20
motor".<BR><BR>This isn't a semantic disagreement. Rather, it is a =
fundamental=20
controversy<BR>that hotrodders have been debating since day one. =
Engineering=20
principle<BR>reveals the truth, however.<BR>--<BR>Scott F. =
Williams<BR>NJ=20
Scirocco nut<BR>'99 Subaru Impreza 2.5 RS<BR>Mazda 323 GTX turbo =
"assaulted"=20
vehicle<BR>Golf GTI 16v "rollycar"<BR>ClubVAC: "Roads found. Drivers=20
=
wanted."<BR><BR><BR><BR>_______________________________________________<B=
R>Scirocco-l=20
mailing list<BR><A=20
=
href=3D"mailto:Scirocco-l@scirocco.org">Scirocco-l@scirocco.org</A><BR><A=
=20
=
href=3D"http://neubayern.net/mailman/listinfo/scirocco-l">http://neubayer=
n.net/mailman/listinfo/scirocco-l</A><BR></BLOCKQUOTE></BODY></HTML>
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