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Discussion Starter · #1 ·
I think there was a thread sometime back about pistons with at least two different valve relief cuts in them, does anyone recall that ?

Does that cost the user anything with a different set of heads, or does it not matter all that much to the combustion process?

G-
 

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CarsByCarl offers them from Diamond for stock stroke with the Kaase valve pattern also cut into them. They will work but in an app such as I had wanted to do they need to be deburred because the extra sharp edges will promote detonation when pushing the limits of pump gas.
 
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