[Shotimes] Rod shifter/exhaust question

[cmichaelo@optonline.net]

OD.

Michael
94MTX,green,BOS+,Koni/Intrax,Baer,Corbeau
SHO items for sale: http://hometown.aol.com/cmichaelo/for_sale.html

----- Original Message -----
From: Paul Nimz <pnimz@v8sho.com>
Date: Friday, October 29, 2004 1:02 am
Subject: Re: [Shotimes] Rod shifter/exhaust question

> Is that ID or OD?
> 
> Paul Nimz
> '97 TR
> '93 EG mtx
> 
> 
> ----- Original Message ----- 
> From: <cmichaelo@optonline.net>
> To: "Ed Cizmar" <ecizmar@earthlink.net>
> Cc: "ROBERT SCHIRMER" <1surferbum@msn.com>; "Ian Fisher" 
> <dataflash@yahoo.com>; <shotimes@autox.team.net>
> Sent: Thursday, October 28, 2004 12:26 PM
> Subject: Re: [Shotimes] Rod shifter/exhaust question
> 
> 
> > Ed,
> >
> > Here's a relatively cheap way to fabricate an "optimal" 2 1/2" 
> catback 
> > system for the SHO.
> >
> > First, I'd buy the Dynomax system, which is basically a 2 1/4" 
> system, 
> > though with a 2 1/2" piping used for the snake section.  I would 
> then drop 
> > the 2 1/4" resonator section and have that section custom 
> fabricated in 2 
> > 1/2" piping with your own personal resonator (many seem to 
> prefer 
> > Magnaflow.)
> >
> > The Dynomax snake section is already fabricated in 2 1/2" 
> piping, so 
> > you're ok with that piece. The only caveat is that the branch 
> section of 
> > the Dynomax catback is fabricated in 2 1/4" piping.
> >
> > However, IMO this won't hurt mid/high-end performance since by 
> the time 
> > the exhaust gases reach the branch section the velocity and 
> volume of the 
> > gases have sufficiently decreased and thus no longer require 2 
> 1/2" to 
> > flow freely. In fact, you may even benefit from keeping the 
> branch section 
> > at 2 1/4" since it will increase back pressure at lower RPMs.
> >
> > So I kind of view this "home made" exhaust as the optimal 
> exhaust for the 
> > SHO.
> >
> > Going 2 1/2" all the way, will hurt low-end performance. 
> Everyone seems to 
> > have noticed this. But by compromising right in the middle, and 
> gradually 
> > decrease the cross section as you move further backwards, I'm 
> hoping this 
> > solve this deficiency somewhat.
> >
> > Be adviced, however, that if you have a 2 1/4" Y-pipe outlet, 
> you won't 
> > benefit anything from the 2 1/2" catback. You'd have to cut out 
> the 2 1/4" 
> > Y-pipe outlet and have a 2 1/2" outlet welded in. (If you're 
> interested, I 
> > can tell you more about how exactly to do this, cause I just did 
> it.)>
> >
> > Michael
> > 94MTX,green,BOS+,Koni/Intrax,Baer,Corbeau
> > SHO items for sale: http://hometown.aol.com/cmichaelo/for_sale.html
> > _______________________________________________
> > Shotimes mailing list
> > Shotimes@autox.team.net
> > http://www.team.net/mailman/listinfo/shotimes
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