Hi all,
After looking around in magazines and doing searches there is loads of different shapes and sizes of manifolds. Im going to be making my own and i have been looking around for a guide to see if there has to be a sertain amount of volume these have to take. What is the best shape to use like a wedge, sauare or round? Any help would be great.

thanks geoff

 

all depends what your want more of, torque or bhp fella. is a very very in depth area with tiny tiny alterations having some very different effects is what ive always been led to believe, mostly to do with flow obviously.
may be worth you trying to get in cotact with someone who has designed inlet manifolds as their job prehaps?