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Sorry figuring that out is above my pay grade. One of the guys into knowing the numbers would have to do the math. Squish band clearance with those flat top highish CR pistons is .038 with the .021 base gasket and a .040 head gasket I'm using. It is a 74mm bore. The combustion chambers are untouched stock shape. I'm more of a backyard wrencher tuner rider and actually don't think about the numbers that much. As long as it all fits together and I won't bend a valve, I know I can make it work, or die trying. Uneducated guess is over 9, but not over 10.My biggest issue after I get it all together will be controlling the froth that is going to want to escape through the breather system. I need to come up with a tall thin filtered to atmosphere canister with some volume and an easy to use drain. Then mount it on the frame in front of the drive side shock. I believe Ludwig made one that is a good model. I don't have a mig welder or the experience to use one, so will have to backyard engineer something, or get lucky and find one online.
Sorry figuring that out is above my pay grade. One of the guys into knowing the numbers would have to do the math. Squish band clearance with those flat top highish CR pistons is .038 with the .021 base gasket and a .040 head gasket I'm using. It is a 74mm bore. The combustion chambers are untouched stock shape. I'm more of a backyard wrencher tuner rider and actually don't think about the numbers that much. As long as it all fits together and I won't bend a valve, I know I can make it work, or die trying. Uneducated guess is over 9, but not over 10.
My biggest issue after I get it all together will be controlling the froth that is going to want to escape through the breather system. I need to come up with a tall thin filtered to atmosphere canister with some volume and an easy to use drain. Then mount it on the frame in front of the drive side shock. I believe Ludwig made one that is a good model. I don't have a mig welder or the experience to use one, so will have to backyard engineer something, or get lucky and find one online.
