speedshifter

iTrader: (1)

Starting to piece together everything to build my motor. I got an L92 motor (10.4:1) and I found a good deal on a set of new OEM LS3 pistons (10.9:1). I picked up the pistons but I need rings for them. With GM's track record of oil consumption, I'm skeptical about running OEM rings. This motor will not have a power adder on it, just 500 RWHP naturally aspirated.

Google searching only came up with a set of 4.065" moly rings by Hastings. Should I go with these or are there others out there?

I've read good things about Total Seal rings, but they specify for use with aftermarket pistons only.

KCS

iTrader: (20)

I'm using the Hastings rings, 2500 miles and no sign of oil consumption. The rings themselves are pretty decent and should be able to control the oil really well with the napier second. The person honing your cylinders will have the most influence on how much oil gets past the rings.

My one and only complaint would be tension seemed a bit high on the napier rings. If I were to do it over, I would have have backcut them.

3rdCoastPowerSports

iTrader: (5)

might be overkill but i would look for a ductile iron top ring (plasma moly). I believe the Hastings set your talking about use a moly top ring, which is cool and will work great. when the ring says its Moly more often than not it is plain cast iron with a moly coat. plasma moly is the process used on ductile iron rings. Ductile iron is i believe 4x harder than regular iron

speedshifter

iTrader: (1)

I talked to a co-worker who's best friend owns a reputable local engine shop. They said stay away from the gapless rings. They use Hellfire rings and have great results from them.

I'm gonna go with these:

http://www.summitracing.com/parts/SLP-R-19100-65/

KCS

iTrader: (20)

The Hastings rings are ductile iron. This is part of an email I received from Hastings when I inquired more about their product:


"2M5292 GM 6.2L V8 ring set
Top rings 1.5mm ductile iron Plasma Moly filled
Torsional 2nd rings 1.5mm ductile iron Napier
Oil control 3pc 2.5mm Expander Stainless steel,
Rail Segmental steel chome plated


Dawn Hill
Applications Specialist
Hastings Manufacturing Company, LLC"


Those won't work very well if you're using the OEM LS3 pistons. What you are looking at uses a 1/16, 1/16, 3/16 ring pack. OEM LS3 pistons use a 1.5mm, 1.5mm, 2.5mm ring pack.

speedshifter

iTrader: (1)

Good to know! Thanks for catching that mm/inch difference.

Here is the application info from their website for part #2M5292:

Now here's my question, this application states its for 6.2L truck engines. I was told the GM part #'s for the L92 piston rings and the LS3 piston rings are different #'s (I'll verify this at work today). If so, whats the difference?

KCS

iTrader: (20)

Not sure what the difference would be, if there is a difference. Another page of Hastings' site shows this part number applicable to the LS3 and LS9 Corvette.

87silverbullet

iTrader: (11)

All I found were the hastings also for stock cube stock piston L92 motors. I said **** it and went with stroking the engine to 416.

speedshifter

iTrader: (1)

I looked up the #s and those #s are different between L92 and LS3 rings, but the pistons are different too. If you compare newer models, a 2010 escalade has a L94 6.2 that now uses the same # pistons and ring as the corvettes. So, that hastings # is good and that's what I'll be using.

For anybody interested, when looking thru the catalog I also found GM offers 0.5mm oversize pistons and rings for these motors as well.