bugy

hi guys, i got rings called "grant" im trying to gap them but i dont know its ring end gap factor, another brands say .004, .0045 top and .005 second groove this is street/strip usage (more street) bore: 4.290.
advices are thanked.

chrisfrost

iTrader: (8)

They say in general something like .003" of gap per 1 inch of bore for the top ring and .005" of gap per 1 inch of bore for the second ring . Go google mahle piston rings or keith black piston rings or 1 of the piston makers . Good luck

S10xGN

iTrader: (11)

From Wiseco's site: Ring End Gap Chart.

A.R. Shale Targa

iTrader: (2)

The type of piston material matters and whether or not you'll squeeze it
at a later date.....I'd put the top ring @ 0.027 and the second @ 0.030
and you should have no problems

Mike454SS

iTrader: (4)

I spent a LOT of time discussing my application with JE's tech line to make sure we had the right ring gap factor for my new 370...if it's not just a "stock" rebuild...I'd do the same for any supplier. JE supplied information about it with the piston/ring combo, but I was still a little iffy about their definitions of intended use, and mine, so the time they spent assisting me was very appreciated.

bugy

thanks guys, all your advices are good help for me