Case compression ratio January 02, 2018 01:30PM
Case 504 factory Pistons with witches hat removed and .200" valve reliefs. I think it puts me around 13.5:1 ?? Thx
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Re: Case compression ratio January 03, 2018 06:09AM
You basically divide the total volume of cylinder and everything mentioned with the divisor, at bottom dead center by total volume at top dead center, including top of piston volume, valve reliefs in head, head gasket thickness, any combustion chambers or reliefs in head, don't forget to add all these volumes with bottom dead center volume as well. This will result in compression ratio. Best of luck to you this new year!
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Re: Case compression ratio January 05, 2018 12:18PM
What is the "WItches Hat" on a case piston??
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Re: Case compression ratio January 06, 2018 07:44AM
the pointed dome to make the fog spread out in the middle of the piston,like a funnel or "WITCH'S HAT:.
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