aode08

what size are the 302 ho piston rings? I recieved the wrong one in the mail today, they are too thick!


Perfect Circle 40451 STD



2-5/64 & 1-3/16 THICKNESS is what the guy told me they were and they are for my 302, he lied

aode08

neither the oil nor compressions rings fit

freewilly

yes, there special ring for the stock forged pistons, its like 3mm i belive, there 120 bucks a set .make sure your ring lands on the pistons are worn out .

aode08

no thats not right 3mm rings!!!!!!!!!!!!


????? thats not right, its something else, im sure someone who done a rebuild know what size they are??

aode08

i guess the only other option is the mm ones i think 1.5 or so, but someone has to know

JohnnyK

I was talking on the phone yesterday with Summit to order rings for my 1988 and he told me they switched to metric (Or switched something) in either 1988 or 1989. I can't remember.

http://store.summitracing.com/partde...700+115&orig=1

this is what I am receiving, and I hope it's right. says 1986-1988, so I guess they switched in 1989.

aode08

yeah ur gonna know!! when they come and it will **** you off if its the wrong ones

88stangaruu

I have a spare set of Hastings rings laying here, i mearsured about 6 of them, everyone of them is on the money at 0.0076, no variations on any of them, thats the compression and scraper rings.

Would they not go into the lands at all? Or is they're not enough clearance from ring to land?

aode08

they would NOT FIT AT ALL, thats the 5/16 and other size 3/16, those are the wrong one for a 5.0 ho forged trw piston.

so 1.5mm and 3 or 4mm thicknes is the ones I guess.

u have a whole set?

88stangaruu

Well, those must have been the ones for my 69' 302 then [sm=headbang.gif]

Stupid me..oh well.

But i have about 4 sets of rings laying around, 2 sets of them are for my Cleveland, then there are these Hastings rings, but i dont know where the hell my 5.0 rings are, if i could ever find them i'd measure them for you and post them up. I may have given them away...damn, i have to much stuff laying around in my garage. Its packed to the ceiling with all kinds of car sh*t i dont need, im a pack rat when it comes to car parts.