Thread: ring gap

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well post 13 should tell you why there a need and how it works? there not a drop in ring s you should check all ring gap i do this on every engine stock and race. the drop in are pre gap for lets say 4.000 bore and = 016 end gap .if the bore is smaller by 0001 then the gap will be about 013 to small now if the piston to wall been open up lets say 4.001 your pre gap rings will about 019 i buy pre gap rings and cut them if need for the intend use blower . nos . drag race .there no one size fits all 005 over rings are for fitting the rings if bore s are bigger and most race rings only come this way so you end gap them to what ever size you want .agood wast of time i spent most of the day cutting 030+ off a set of race rings and ...020+ off the second ring on .043 thick rings in a engine that will see over 500HP of Nos so heat make s them grow and i do not want to see them butt . there is no EZ way out i check evey hole if need i cut rings to the gap i what.. this is the way i build the stock and race