Design Plumbing Outlet
Exhaust system for an inline 6 cylinder motor.?
I will be designing an exhaust system for the AMC 258. For performance reasons, I have decided to keep the pipes from the collectors for cylinders (1,2,3) and (4,5,6) separate until I run out of car length where I will then place an X-pipe. This is the best pattern for the given firing order.
My question is regarding the X-pipe. It seems to me that I could achieve the same result by plumbing the two pipes into one muffler with one outlet and two inlets rather than running an X-pipe into a muffler with two inlets and two outlets.
My second question is regarding catalytic converters. Where is the best place in the exhaust line for them, and would I be best suited using two separate converters for my application?
The converters should be as close to the maximum amount of heat as possible. Always run the X pipe directly after the converters then into a large diameter straight through muffler.
Schonefield and Dynatech racing exhaust systems are designed this way – without converters or mufflers of course.
Kohler – Designer Plumbing Outlet – ShopDPO.com