P\N for Perfect Circle rings for H825CP's? (.030)

[Brandon_K]

Pretty basic, but I'm having some problem finding these.

I've torn into the motor further, main and rod bearings are junk. Bits of the cam seem to have carved nice grooves in a few of the bearings. Since I wasn't planning on taking the bottom end apart, I was going to leave the rings (~15k on the build). But, since I had to pull the caps and the crank came out, I might as well do the rings while I'm in there.

When I built it in 09, I used Perfect Circle 50514CP's in .030. (I'm positive about that, I have the box sitting here) This part number doesn't seem to exist anymore. I've found a Sealed Power part, E234K appears to be the full moly set, E234X for iron. I can't say for sure, but I believe the 50514CP's I put in were moly. Opinions on using cast vs moly? I've heard before that the bores have to be specially honed for moly rings, I'm not sure if there is any truth to that. The bores are still clean with cross hatching on my block, minus one or two small spots on #4 that I need to look at further from it sitting for the last 6 months.

I'm not against using Sealed Power rings if that is what is now recommended, I've just always used Clevite / Perfect Circle / etc in the past with no issue.

[Brandon_K]

Side question, are SH1980S the correct Clevite cam bearings for 99 block? I'm getting conflicting part numbers depending on who I use to look it up.

[SilverXJ]

Piston rings: Sealed Power: E234X, E234K; Hastings: 2C667, 2M667, 667

Side question, are SH1980S the correct Clevite cam bearings for 99 block? I'm getting conflicting part numbers depending on who I use to look it up.

Those will work.

[Muad'Dib]

I used Moly perfect circle for my 4.7 build and i also used H825CP's:

http://www.jeepstrokers.com/forum/viewt ... f=8&t=2317

The part number i used is listed in that thread.. which is 40514CP-060. So for the 30 overs your part number should be 40514CP-030.

[Brandon_K]

Thanks for the info gents.

I have to call and order some stuff from Falcon tomorrow, I'll see if he can get me the Perfect Circle rings. If not, I'll use the E234K's from Sealed Power. Falcon deals in both brands.

[Brandon_K]

Well I feel like a tool.

I pulled the pistons out tonight, they aren't H825CP's. They are H802CP's. For those unaware, same piston as the H825CP, but in metric. As a reference to anyone that may search for it, the H802CP's use Perfect Circle / Clevite 41870CP rings (in my case, 41870CP.030). Of course the metric rings are more expensive.

I really don't remember changing the piston part number on my build, 825's are what I have on my build sheet. Oh well, they've help up just fine thus far.

[gradon]

Yeah I don't get it either: the standard pistons cost more than the metrics, but the metric rings cost more than the standards.