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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>&nbsp;</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: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
  <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>&gt; That's =
just=20
  what I said!&nbsp; :)<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.&nbsp; 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.&nbsp; 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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