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Old 08-03-2019, 04:02 AM
chados chados is offline
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Hello dear forum users, I had a question about the compression ratio of my Honda clone.

Now I have a 14cc combustion chamber
The standard piston is not a flattop.
Head gasket thin steel.

according to my calculations, the compression ratio is 10.3 - 10.5: 1

I want to install a flattop piston, but then the compression ratio will be already 13: 1, I'm afraid that this is of great importance.
Do I need to install a thick head gasket?
or will the motor withstand this compression ratio? I use the motor on karting in races, the engine speed reaches 7500 rpm.
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