Post by xyshannen on Oct 28, 2014 14:55:52 GMT -5
Usually the piston is marked with (IN) to indicate intake. And usually on most pistons I've seen the intake butterfly cut is significantly larger than the exhaust cut. So looking at the pic you had it backwards. You can see the cut in the piston with the arrow pointing at it is smaller so that is your exhaust side.
Curious...before you installed the motor, did you try to turn it over by hand without the spark plug in to check your valve clearance? Cause your intake valve should have been smacking the crap out of your piston.. That's how I found out my cam was causing my intake valve to hit my piston. On that stroke it wouldn't turn over.. so I had to use a dremmel tool to remove some material from the intake butterfly cut.
Do me a favor..before you install this kit, take a pair of calipers to that piston and get me a measurement. I'm curious if this piston is actually 60mm and not 58.5. I still might buy this kit if it really is a 60mm. 1.5mm doesn't sound like a lot but it's something like 7 extra CCs, and that is a pretty big difference.
Curious...before you installed the motor, did you try to turn it over by hand without the spark plug in to check your valve clearance? Cause your intake valve should have been smacking the crap out of your piston.. That's how I found out my cam was causing my intake valve to hit my piston. On that stroke it wouldn't turn over.. so I had to use a dremmel tool to remove some material from the intake butterfly cut.
Do me a favor..before you install this kit, take a pair of calipers to that piston and get me a measurement. I'm curious if this piston is actually 60mm and not 58.5. I still might buy this kit if it really is a 60mm. 1.5mm doesn't sound like a lot but it's something like 7 extra CCs, and that is a pretty big difference.
