[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: Corky Bell's "rules of thumb"...exhaust size
>Exhaust gas velocity....that's an interesting thought. I think that is
>where CB was going with that. If you increase the volume (pipe diameter)
>wouldn't the gases slow causing the turbo to not spool up as fast?
Not sure where I saw it... but there is a new product being developed
called a "negative backflow muffler". Basically, its a tailpipe inside a
tail pipe, with the inner one connecting to your engine. The outside
tailpipe, or sheath, has a (wild guess here) 1/2" gap between it's inside
wall and the outer wall of the regular tailpipe. This sheath then attaches
to a funnel or air pump (they are testing and playing with it) and
hopefully by increasing the velocity outside of the tailpipe in a
controlled manner, the venturi effect will take affect and suck the exhaust
Negative back pressure. I read it either on the internet or in a Street
Rod or similar magazine (Maybe Turbo and Hi Tech Performance? Who knows),
and thought about experimenting, but I never get to it.
Its a neat idea I think.
Homebrew Automotive Mailing List
Bridgeport, CT 06606
1989 AG Hummer 4-Door
1993 Supercharged Lincoln Continental
2000 Mid-Engine Sports Car <smile>
Seeking Info on: GM Tubular Upper and Lower A-Arms