Compression Ignition Addict
Join Date: Nov 2008
Location: Kingwood, TX
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porting consists of a lot more than just making the opening larger. Porting the cylinder heads, allows a larger, free'er, and straighter flow of air into the combustion chamber, if you smooth the insid and just open up the outside to match the gaskets you still are not getting anymore air into the engine.
they will also work to possibly slightly reshape the runners and port them as well.
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