[SkinDonor]

Go ahead Dezmo explain what octane rating is for and why octane changes performance . :wink:

 

[SkinDonor]

Hmmm thats what I was thinking I would like to hear this too



we have played around with combusting chamber design with very little results on these small motors

 

[SkinDonor]

Heh I've been playing with motors since I was kid everything from lawnmowers radio controlled car motors to big cars this idea that hot spots in the combustion chamber causing predetonation is true but not on these small 4 stroke motors. the compression ratios do effect detonation but little hot spots never. I've played with combustion chamber like I said before and no differance was noted . I've also played with the dome shape of the pistons Hieght ,progressive edge and squash zone no differance . these theorys just don't apply with little 4 strokers from what I have seen .



No pissing matches needed just facts . but like I said these little 4 strokers are being built bigger and better than lets say 10 years ago so we should keep the lines of comunication open and the R&D rolling.



there is still alot we don't know about these little guys so back to the drawling board we go untill we figure it out