[Shotimes] custom y-pipe?

[cmichaelo@optonline.net]

Paul,
What was the impact at the high end?
What hole size did you end up with as a good compromise?

Michael
94MTX,green,BOS+,Koni/Intrax

----- Original Message -----
From: Paul Nimz <pnimz@v8sho.com>
Date: Tuesday, February 10, 2004 10:15 am
Subject: Re: [Shotimes] custom y-pipe?

> It used a smaller diameter center hole, than the total flange 
> area, that had
> a many smaller holes around the diameter of the central hole.  The 
> smallerholes were varied by quantity.  Pretty easy to change out 
> and yes I was
> trying to increase low end torque.
> 
> Paul Nimz
> '97 TR
> '93 EG mtx
> 
> 
> ----- Original Message ----- 
> From: <Mike.Wojton@us.o-i.com>
> To: <shotimes@autox.team.net>
> Sent: Tuesday, February 10, 2004 7:42 AM
> Subject: Re: [Shotimes] custom y-pipe?
> 
> 
> > Just different diameter holes?  How did you determine which was 
> best?> Seat of the pants feel?  I presume you're looking for an 
> increase in
> > torque.
> >
> >
> > Mike Wojton
> > Toledo, Ohio
> >
> > -'95 White MTX
> >    '96 Brake Upgrade
> >
> > "Avoid the clap." - Jimmy Dugan
> >
> >
> >
> >
> > shotimes-admin@autox.team.net wrote on 02/10/2004 01:38:07 AM:
> >
> > > I agree. backpressure is easy to add.  I use to run a 
> restrictor plate
> > at
> > > the Y pipe /Cat back flange.  Got a few laying around if 
> anyone wants
> > one.
> > >
> > > Paul Nimz
> > > '97 TR
> > > '93 EG mtx
> > >
> > >
> > > ----- Original Message ----- 
> > > From: "John J. Weidenbenner" <johnjweid@charter.net>
> > > To: "Carl Prochilo" <gr8sho@prochilo.myserver.org>;
> > <Mike.Wojton@us.o-i.com>
> > > Cc: <shotimes@autox.team.net>
> > > Sent: Monday, February 09, 2004 4:52 PM
> > > Subject: Re: [Shotimes] custom y-pipe?
> > >
> > >
> > > > I'm not sure why a single dual inlet cat is being 
> investigated. What's
> > the
> > > > advantage. It doesn't match the original layout so it won't 
> the meet
> > the
> > > > govt requirements unless the new design is submitted and passes
> > testing.
> > > > It's not submitted to the doof that does the emissions test.
> > > >
> > > > If low cost and retaining enough back pressure is the 
> objective how
> > about
> > > a
> > > > catless y-pipe with restriction(s)added, such as a necked 
> down pipe
> > > > element(s). Whatever size it takes. Flow could be caculated 
> and/or> looked
> > > > up. This could even lead to a customeizable/tuneable y-pipe. 
> The pipe
> > > still
> > > > would not have the emmisions "paper work" to make it legal - 
> if you're
> > > > caught, but would eliminate the cost of the convertor(s).
> > > >
> > > > John W.
> > > >
> > > > ----- Original Message ----- 
> > > > From: "Carl Prochilo" <gr8sho@prochilo.myserver.org>
> > > >
> > > > > I believe Ian Fisher is investigating this now.
> > > > > -- 
> > > > > Cheers,
> > > > > Carl Prochilo
> > > > > 1992 Ultra Red Crimson
> > > > >
> > > > > Mike.Wojton@us.o-i.com said:
> > > > > > I was talking to a friend at work here about y-pipes and 
> such> > > > > (he's researching options for his Contour SVT).  
> Anyways, we were
> > > > > > looking at convertors, and noticed a Catco dual inlet, 
> single> outlet
> > > > > > convertor.  http://tinyurl.com/38xer  Last one on the page.
> > > > > >
> > > > > > Anyone ever thought about using something like this for 
> a custom
> > > > > > y-pipe?
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