exhaust system idea

[James Weiler]

Thank you jim!! Yes that's what I meant, but perhaps a second pipe with 
no muffler was not such a great idea sue to legall issues.  So I suggest 
a partial muffler instead of none.  This gives the benefit of variable 
back presure for optimal flow rates at various RPMs.

Anybody got a good refrence for muffler design?
thanks,
jw


On Sun, 14 Mar 1999, Jim Yeagley wrote:

> Wasn't the original question about the concept of a variable back pressure
> exhaust system?  I think the idea is great, low to mid rpm gets more
> backpressure, then as rpm's increase, backpressure decreases to none.
> That's where the open pipe idea came from.
> 
> If this idea were coupled with a variable valve timing setup, it would allow
> the best performance through all rpm ranges.  Of course, it's all shooting
> from the hip theories!
> 
> Jim Yeagley
> 1996 Dodge Indy Ram
> See it and many others at: www.indyram.org
> 1975 Pontiac Grandville Brougham Conv. (in baskets)
> webmaster at indyram.org
> jimyeagley at stratos.net
> 
> 
> 
>