I am looking for help on setting up my exhaust system for my 1500cc midget. I have weber carbs (downdraft) and 4 -> exhaust system, but I need to find what diameter to use for the rest of the system
I'm running dual SUs on my 1500 (removed from a Midget 1500 sitting in an English "Breaker's Yard"), a PaceSetter 4-into-1 manifold, but an otherwise pretty stock engine. Afer some experimentation,
per Cyrille... Hi Cyrille, For a street car I'd go with 1-3/4 or 1-7/8 inch. I had a stock Datsun 510 with a 1600cc OHC engine and 1-7/8" made a great improvement in low-mid-range torque immediately.