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IPD Headers 1800

I am looking for objective opinions on the IPD header pipe. I am rebuilding a B20 engine with B20E head on carbs. I was planning on re-using the IPD pipe I already have, and try to port the exhaust ports in the head appropriately. When I measured and matched the existing ports to the IPD header, I find there is little room for expansion. In fact, I have been told that I am likely to get better flow simply with the original cast iron exhaust manifold. Has anyone some hard data on this?
Thanks
JD






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New IPD Headers [1800]
posted by  jaydee subscriber  on Wed Nov 24 17:54 CST 2004 >


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