J Heads

Alot of the racers today are having good results with gaping the second compression ring larger than the top ring. I know that is counter to everything you have heard on ring end gaps,..so far. The reasons behind this theory is compression gases build up between the top two rings and cause the top ring to 'flutter', (loose seal). I like to use .004 X bore, for top ring, and .0045 X bore for bottom ring. These are for the top two compression rings. For those who do cut thier own ring end gaps, Keep the gap parallel, and ALWAYS deburr the sharp edge that is left after cutting. You made some good points Mr.Speed. Good topic. Terry.