The Stovebolt Site Forums The Shop Area Engine Shop .080 Oversize Piston Ring Supplier Help

I'll be searching the net today but thought I'd also pop this question to the experts.
My 261 block is .060 oversize but I need to bore it again, to .080
I found some 261 .080 pistons, but I need to find some rings.
Can anyone help point me to a supplier?
Many thanks!

Jerry

Jerry,

Have you checked with Jim Carter (special order) or Patrick's Antique Cars and Trucks (in AZ) or Kanter (might only have up to .060).

Thanks for getting back Tim.
I tried Kanter and they went to .060"
Didn't try Carter or Patricks. I'll do that...
I did find a supplier for a set of Hastings .080"
Part #2C137 08
Unless someone pipes up and says Hasting rings are junk, I'm currently leaning in that direction.

Jerry

Chrome or no? What's the difference other than price?

I would think if anybody has them, it would be Egge. They also make pistons. The new pistons that Egge makes for these old motors have a newer thinner style ring.

Thanks Truckernix,
I'll see what they have also and bookmark them.

Don't put chrome rings in this engine. It will almost certainly be an oil burner if you do. They would take forever to seat. Plain cast iron rings are the best solution for our old girls.

Many thanks for that, Dave!

Case closed...
Bought a set of new Sealed Power .080" oversize pistons on Ebay for $120 and the guy's throwing a new set of Hasting rings in the same shipment for another $67.
Hey... I think I scored on this one.

Jerry

It is always nice to have a spare set of rings. Hopefully you never use them.

What you say has some merit,some facts about chrome rings: Your engine came with chrome rings-the practice for manufacturers started around 1950 and continues to this day.Chrome rings are easier on cylinder walls under All situations(except chromed bores) and result in at least twice the interval between rebores.well designed chrome or moly rings have a short break in period and don't require special treatment.
I doubt that there has been an automotive engine having cast iron bores using exclusively unplated rings built for sale since 1953.
Most (chrome) and (moly) ring sets have a plain(unplated) second ring.
Chrome oil rings have a much better chance to control oil wipe down as well as a lowered tendency to plug with carbonized oil buildup after long use.
Many non-chrome ring sets use a cst iron one piece oil control ring while the chrome sets usually use a "built up set of 3 or more pieces using selected metals for special results.
Piston rings and their design and operation are not a simple chrome or no-chrome thing but rings from a reputable manufacturer will function well in the designated application.
I would NOT install non plated rings in a heavy duty engine.
In a rebuild recently of a very common engine(Perkins 3-152 in a Massey-Ferguson 135)where the owner furnished a Piston/sleeve/ring set made in europe where these engines abound.The set came with plain rings but are offered with plated also.We scrapped the plain rings and installed Hastings because the shortened life expected with plain rings was not acceptable.
Case rests.

Cast rings in a worn cylinder; chrome rings in a new or rebored cylinder.

Rings coming are cast iron. The block is being rebored. I bought the wrong set?
(Someone please tell me the c.i. will work)...

Jerry

Certainly they will work well.The Chrome set will work longer and extend the engine life before the next overhaul, which will, by the way, call for custom pistons,or all cylinders sleeved as .080 OS is about the end of the road for common oversizes.
Chrome rings are especially effective in reducing wear under dusty conditions but not much dust in Texas and that's what good DRY element air cleaners are for.

i had to use .080 overs in my 235 rebuild
i ordered them from pattricks they were egge
brand worked good. philip

In the Egge catalog I got a few years ago they list .100 over pistons and rings for 235 and 216.

Boy, this is the first time I've ever heard of .080" or .100" over bore on a Stovebolt. That's gotta be pushing it to the very edge.
Anything cast iron over .060" was usually a candadate for a sleeve. Think maybe those larger pistons were meant for engines that are being set up for racing and have been rebored and sleeved??
Denny G

This is a statement made in an article written by Pat Smith called "261 Street Engine Build":

"The bore can be increased to 3.875 (278 Cu. In.) with fair safety. And, in an emergency, in the case of saving a block, can go another .020" to .030". I like to go .110", which leaves a margin of safety and 276 cu. in. Rings used will be Buick V6 + .060"."

I thought that was interesting and felt safe with my .080" oversizing decision.

Jerry