The Ford Barn - View Single Post - 255 merc excessive ring end-gap?

modela4shane · 07-03-2020, 11:16 PM

Has anyone ever encounterd a situation with too much piston ring end gap? Im in the process of re-ringing a 255 Merc that has a.030 overbore. The cylinder has been honed and now 3.217. I am attempting to use a NOS set of Sealed Power iron rings that are .030 over and i am getting .032 on the ring end gaps. My guestion is it OK to get a .040 or even .050 ring set and file fit the ring to the appropriate gaps. Any help or suggestions or thoughts would be appreciated. Thank You.

07-03-2020, 11:16 PM	#1
modela4shane Senior Member Join Date: Jul 2011 Posts: 165	255 merc excessive ring end-gap? Has anyone ever encounterd a situation with too much piston ring end gap? Im in the process of re-ringing a 255 Merc that has a.030 overbore. The cylinder has been honed and now 3.217. I am attempting to use a NOS set of Sealed Power iron rings that are .030 over and i am getting .032 on the ring end gaps. My guestion is it OK to get a .040 or even .050 ring set and file fit the ring to the appropriate gaps. Any help or suggestions or thoughts would be appreciated. Thank You.