Has anyone actually measured the combustion chamber volume of the F20B head? I've searched for a few months now and I have not come across a definitive answer.

After looking at pics of the H22A and F20B head, it seems evident that the PCB chambers are of a different design than the 53.8cc H22A chambers.

Additionally, I dont think Honda would have used the 53.8cc chambers on an engine with an 85mm bore. I would think that the same 50cc chambers used on the other F Series would be utilized on this application.

Any insight on this matter??

 

50сс

 

Have you personally measured it to be 50cc or know someone who did??

I'm actually seeking replies from someone who has measured the chambers.

 

Yes, I personally measured

 

Thanx!!