Visit The Dirt Forum for More Information

Author Topic:   Regulator or ball-valve bypass
Dirt Freak

Total posts: 385
posted January 10, 2005 10:41 AM  
Which one is better - running methanol, have a C&S Carb with a BG ball-valve style bypass - the bypass seems to wear out the throttle shaft - I've just sent the carb to be rebuilt/bushed and I've seen a lot of other carbs do this same thing. Was wondering if this is something that I've just got to live with or if the regualtor style bypasses are any better or worse? Building a new engine so I don't want to starve it for fuel, but hate paying to get the throttle shaft bushed every couple years...

Anyone have any suggestions?

Dirt Freak

Total posts: 209
posted January 10, 2005 11:52 AM  
the way to go is a diaphragm bypass (looks very similar to a normal pressure regulator from the outside). they're sold by most of the major suppliers like BP, Barry Grant.

Dirt Maniac

Total posts: 110
posted January 11, 2005 05:48 AM  
we use diaphragm bypass with a pill for mechanical or belt drive pump. for mechanical , we just about shut it off and let the pill (jet) take over and for belt drive we set it for 5psi idle and 9-11 psi wide open throttle.

Back to the Archives