I have recut grooves in JD 2-cyl. pistons-last one I did, we had to order wider rings, my machine shop guy used to be able to get spacers, but they became unobtanium...shouldn't be too much trouble to find any width ring for a 4" bore.

According to my old Hastings list both the compression and oil ring width is 5/32". Couldn't find a spec for max groove width on the 22.

"Old wrote:

According to my old Hastings list both the compression and oil ring width is 5/32". Couldn't find a spec for max groove width on the 22.

Thanks, OM. I'll post my measurements. What does your gut tell you a reasonable clearance is between ring and groove? Ray

Top compression ring...about 0.003 to 0.004 in. Max with a new ring 0.010 in. Clearance should be a little less as you go down the ring stack.

If you decide to rebore and sleeve the cylinders to standard size, have the machine shop check for Clevite cylinder sleeves. They make 'em in all different sizes as far as length, diameter and wall thickness. I used a lot of 'em when I was in business 18 years ago and I never had a problem matching what I needed.

"ol wrote:

If you decide to rebore and sleeve the cylinders to standard size, have the machine shop check for Clevite cylinder sleeves. They make 'em in all different sizes as far as length, diameter and wall thickness. I used a lot of 'em when I was in business 18 years ago and I never had a problem matching what I needed.

OG, I dropped the jugs off at NAPA this morning. The master machinist there knows his business. I'll check with him to see what liners he will be using. Being cast iron jugs he plans to magniflux first, then machine a shoulder at the bottom of the cylinders for the liners to sit on and to prevent liner slippage. He will use a thin liner to reduce chances of cracking the jugs when he presses them in. Finally he will deck the tops of the cylinders to be sure they are flat. Ray

Puffer,

It sounds like he knows his business. .that's about the same way I'd have done the job.