compression ratio for Honda\China clone

[4ado]

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.

 

[ole4]

What is your in the hole measurement currently with the dished pistons outer edge? Which flattop piston are you going to use? There are a couple of different compression heights.

 

[4ado]

What is your in the hole measurement currently with the dished pistons outer edge? Which flattop piston are you going to use? There are a couple of different compression heights.

I will use piston 68 mm, 0.2 mm to the edge

 

[ole4]

So if your in the hole stays the same with a flattop (.008) and you use a .027 mls gasket you will be at 12.3 : 1. While apart you may want to cc the head to see if it may be slightly larger than 14cc. That would lower it a bit more.