lol sorry this cylinder it was bad and didn't really care about taking numbers down but trust me when I say that they were bad that I mean that they were bad that's the gamble with some of the farmertec ms660 cylinders.
What in the heck!!!
So fabz is doin snowmobiles now too??!
I realize that what they were trying to do I think? I believe they were thinking less friction but pretty hard to get good compression out of a cylinder and piston that look like the surface of the moon.
I highly doubt he went above the exhaust with those dimples.
I thought so too. But if those dimples are much bigger than a mm in diameter, there won't be much case compression
Looks like he was all over the place with them and to me if it ran it couldn't of ran very well just saying.
I remember trinity racing used to advertise a much milder version of that, “stage 4 piston mods” they claimed no power increased, but it helped hold oil on the piston....
On a reed valve tuned pipe two stroke, crankcase compression is less of a factor, and in “pipe theory” more crankcase volume can be an advantage with a good scavaging pipe! The pipe will pull mix in from the crankcase, creating a draw on the crankcase, increased volume can gain power to a limit of coarse! There are many times the factory got crankcase volume incorrect on motocross bikes! A trx 250r run well with a 1/4 cylinder spacer with a long rod and 86 piston, it would kill crankcase compression, but it’s not as much of a factor as a piston port motor, and with a good pipe it can gain power.
before. 
after. See the difference.
Lol look closer.
Looks like he opened up the windows in the piston a touch.
