when i went back to the mechanic last week (haven't started work on my bike yet) i compared the original piston from the bike hes working on now, with the new ones i bought, there is like a 1 or was it 2 mm increase in the diameter, and the top end/head of the piston comes out more, which creates the higher compression ratio compared to the stock piston. plus the fact that there is also a slightly larger volume in the actual piston chamber.
i wonder what compression ratio this will push it up to.
there seems to be a shortage on good piston rings here at the moment. they had to keep delaying the other bike because they couldnt find piston rings, and now they are still waiting to find me a set... sigh~
was really curious to find out what kind of improvement (i hope there will be some, lol) i will get with this mod + porting, etc.
gotta sit tight and wait for these piston rings now
