Quote:
Originally Posted by Bob Bidonde
Porting is not reversible and it reduces the compression ratio. For a street runner, I doubt porting is of any significant value, but I am guessing.
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porting for higher performance engine is probably good when combined with all the other components
but the reliefs like on this fh8 , you wouldn't do that to a model A. the valves are already higher than the top of the block.
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