As I remember the larger pipes were only harder to fit but didn't give any
performance benifit. The 2" should be good on the TR-4 or you moight try
2/1/4" if you can fit it easy. NOT FALLING OFF IS A KEY THOUGHT HERE..
There are two things that I never could abide in racing:
1. Running out of fuel
2. Having the exhaust pipe come loose and be black flagged.
3. BAHH!!
----- Original Message -----
From: <WEmery7451@aol.com>
To: <kaskas@earthlink.net>; <RJunkermei@aol.com>; <fot@autox.team.net>
Sent: Tuesday, December 11, 2001 10:27 AM
Subject: Re: exhaust size
> In a message dated 12/10/01 9:28:28 PM Pacific Standard Time,
> kaskas@earthlink.net writes:
>
> << In my long dyno testing of this engine I found that a single pipe was
> better
> than a dual combination. >>
>
> Kas's little black book says to use 2 1/2" OD tubing. I have known of
people
> who used larger than 2 1/2" diameter tubing. Is it to be assumed that the
> larger OD tubing hurts rather than helps?
>
> I might be using 2" tubing. If so, another attempted upgrade. This is
the
> four cylinder engine.
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