Okay, I know what quench is, in a very generic sense. As I understand it, quench is the space between the top of the piston at TDC and the bottom of the head. Again, from what I understand, the "optimal" quench distance is around 0.040". The tighter the quench, the less likely the engine will pre-ignite, or "ping." Am I right so far? However:
- The compressed thickness of a Fel-pro head gasket is 0.040"
- The difference between the top of the block and the top of the piston at TDC is around 0.035", plus or minus
- The safest minimum deck clearance is 0.025"
So, on a stock engine, the quench distance is 0.075", which is way above tne optimal distance. Is the minimum safe distance the total of the head gasket and the deck clearance? Should we all be using thinner head gaskets and/or shave our heads/block/intake to reduce the quench distance (which would also increase our compression ratio)? If time/money were not concerns, why or why not? Am I completely off base?
Joseph
What is "Quench"?
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colnago
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What is "Quench"?
"Sugar", my 1967 Ford F250 2WD Camper Special, 352FE, Ford iron "T" Intake with 1405 Edelbrock, Duraspark II Ignition, C6 transmission, front disc brake conversion.