Stopping the knock: Lower compression and ported heads...

you got too much clearance in your squish area! get it down to about .040---------------------------:coffee2:---bob


Was the block honed with a torque plate?
Looks like it may be sucking some oil thru the guides too.

I agree with these 2 statements. Seems like an awful lot of oil carbon on those piston tops......getting it from somewhere.