A piston rings

[bobgfla]

geting ready to put pistons in block 1 ring has white on outside,, these are the comp. rings does it go on top?? box head no markings even the gap was to small head to michine of ends to get right gap per j d specs. the pistons are m and h aluimuam o45 over . block is 045 over honed and ready for pistons .
 

[teddy52food]

If the rings had to be filed for end gap, I sure would be checking to be sure you have enough clearance on those aluminum pistons.
 

[bobgfla]

have a set of j d factory pistons 045 over should i use them instead the m and h,s ??
 

[Machinery-Man]

I would use the factory pistons but not sure about the rings since you filed them. Did you place the ring in the bore and check the clearance. Aluminum pistons require a much greater clearance than cast and ultimately if too tight could seize. Not a fan of non factory pistons.
 

[David G]

You should always check the endgap on the rings. I think it is .003-.004 per inch of bore size. A service manual should give you the exact number for each ring.

I would check that and the piston clearance. You are assuming the boring was done correctly for the pistons.