.030 750 rings

seattle##gs · May 1, 2017

does anyone carry new Norton rings at .030? with a 3 piece oil ring?

acadian · May 1, 2017

got my +.030 from Norvil

bill · May 1, 2017

if you cant find the +30 than order +40 and file fit.

seattle##gs said:
does anyone carry new Norton rings at .030? with a 3 piece oil ring?

pommie john · May 1, 2017

If you can't get them from Norvil, I might have a set in the garage. They would be for early Powermax pistons that have a shallow oil ring groove though.

seattle##gs · May 1, 2017

thanks but these are the stock JCC pistons, normal oil groove. Do the Norvil rings have a 3 piece oil ring

Frankie17 · May 2, 2017

Never seen JCC pistons in +030 ? check the internal casting numbers

plus 30 are normally old stock Hepolite pistons

lcrken · May 2, 2017

I've never seen JCC pistons for 750 Commandos in anything but standard, +.020, +.040, +.060. and +.080. Could be they made a special run for someone like Norvil, but I doubt it.

Might be GPM. They made +.030 at one time.

Ken

seattle##gs · May 3, 2017

I bought somm from ebay today, theyr'e old but at least I get a 3 piece oil ring. Beggars can't be choosers