Quote:
Originally Posted by coachtech
 Cool, good info. Thank you GasGas Guru's!
Jakobi, yes I was going to measure squish and use a gasket to maximize squish w/out effecting port timing much. My bike runs great for my riding style and feel no need to make any major modification. Let's call it "fine-tuning" if necessary.
jz |
If you're happy with the delivery of the engine now I would keep the port timing the same. If your squish is still too big for comfort spend the coin and get the head turned down a little. This approach will give you a little more everywhere (not crazy power, just a bit stronger - and better fuel economy - more stable jetting). If you drop a gasket you will change the port timing and sacrifice top end but gain some bottom. No other pro's really except its cheap and easy.
There was a thread which showed some graphs and the effects of head/gasket works on the engine. I'll try and dig it up.