CY F270 question

[tallgoldguy]

Anyone do any upgrades or big bores to this engine? I can't find anything other than stock for it 34mm bore and 30mm stroke. Would a zenoah head fit it cause there are 36mm kits for those.

 

[mooman007uk]

I'm told the zen heads do fit but the transfers don't quite line up
the f270 has some pretty aggressive porting already, much like the rcmk heads, however they do not have much meat on the bone to play with unlike the zens

 

[tallgoldguy]

Here is what I found after tearing down the engine. I had pretty much no compression.

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