Thread: Picked up my Son's engine yesterday.

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Thanks, Pat. Only two motors I have had in my life were balanced, one is the 355 Chevy I bought in that Camaro ex racer, and now Dan's Olds. The Chevy pistons have what look like drilled depressions on the underside of the piston heads, as if you took a drill press and slightly dimpled them underneath. I expected to see the same thing on the Olds pistons, but instead found those areas near the pin boss, like you described. I guess the reason is you want to take weight off of where it is heaviest ?

I'm starting to look for a ring filer. I can't afford an electric one, plus I think we could control a manual one better and have less chance of over filing a ring. Summit has them, and I see K and D makes one also. Looks like it will cost about $ 80-$100. I am also going to get the spacer to push the ring down into the bore, and am leaning toward the one that has the screw on it to fit various bore sizes.

Any suggestions there?

Don

on pistons the die grinder with a carbide bit then a sand drum or roll up is how i do the pistons i do not use a drill some times i will go in with a ball mill and make a cross in the piston to get the weight out it looks alot better then a hand full of drill marks .yep many years i used a mill hand file that i clamp on a engine stand with a hose clamp did over 50 engines this way . i have a hand crank piston ring filers $50. i do not know how many rings sets i cut with it . as for squaring the rings i still use a small starrett precision square that i set at 1 inch and walk it round the deck to square the ring .i use a dressing stone on rings after cutting them .if you fail to dress the end gaps your will cut up the bores Oh you only need to cut one side of the ring .

Don you don't need an electric filer, get yourself one of these and go easy as its very easy to remove too much Precision Piston Ring Filer - Speedway Motors, America's Oldest Speed Shop

Not sure what spacer your referring to but i just use a piston to push the ring square in the bore when checking gaps.

Ring expander here Piston Ring Installation Tool - Speedway Motors, America's Oldest Speed Shop

Originally Posted by Itoldyouso

Thanks, Pat. Only two motors I have had in my life were balanced, one is the 355 Chevy I bought in that Camaro ex racer, and now Dan's Olds. The Chevy pistons have what look like drilled depressions on the underside of the piston heads, as if you took a drill press and slightly dimpled them underneath. I expected to see the same thing on the Olds pistons, but instead found those areas near the pin boss, like you described. I guess the reason is you want to take weight off of where it is heaviest ?

I'm starting to look for a ring filer. I can't afford an electric one, plus I think we could control a manual one better and have less chance of over filing a ring. Summit has them, and I see K and D makes one also. Looks like it will cost about $ 80-$100. I am also going to get the spacer to push the ring down into the bore, and am leaning toward the one that has the screw on it to fit various bore sizes.

Any suggestions there?

Don