I'm gapping my Hastings (2C4670) rings and thought I'd ask here before I wreck this set. Ross pistons + 040. Got a tip from a performance guy locally who suggested I calculate gap using cyl bore x .0080 for the top ring and multiply that result by 1.5 for the second ring.
So 92.0mm x 0.0080 = 0.736mm (0.029") for top ring and 1.10mm (0.044") for the second.
I've seen reference to that to ring formula on one Hastings tech article but can't find anything on the second ring although I have seen other references indicating to add 0.0005 to the calc factor for the second ring (so 0.0085).
Does anyone here have some solid help and guidance to offer?
Des
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