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Hi All,


Love the forum and some of the machines you have built/created 👌

I have managed to get my K20A running in my Westfield Chassis (Caterham 7 replica) and I now need to fabricate a exhaust header/manifold from mild steel, does any body have a design I can use a guide for pipe size diameter, shape length etc?
 

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most run 4-1 systems on these due to size restriction. There is no space for decent or actually any length of secondaries. Joe MacCathy found 1-7/8 piping best for primaries. You lengths will be dictated by the muffler position, not by ideal pipe dimensions.
 
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