FCar2000TA

iTrader: (7)

What causes an LS1 ring land to fail?
How common is it on stock short blocks?

RB04Av

Too little ring end gap.

Pretty rare unless nitrous or a blower or some such is involved.

wannafbody

iTrader: (2)

It's from too many sloppy builds.

KCS

iTrader: (20)

Not enough ring gap, and also detonation can do it too.

It’s common on SBE with power adders, especially nitrous. Not so much in NA applications.

Ls7colorado

iTrader: (3)

FCar2000TA

iTrader: (7)

Will 11.6:1 compression on a stock LS1 short block create enough additional heat to make stock ring gap an issue?

I am trying to decide if keeping my short block stock is going to be safe with 60cc MMS 220 heads. The cost of new rotating assembly + block machining + assembly is more than I was anticipating.

Ls7colorado

iTrader: (3)

thats really not that high of compression, a STOCK ls2 is 11:1

Rickys2003svt.cobra

Mine broke @ 90k. Stock ls1 on 9psi no water/meth or intercooler and an crappy tune

RB04Av

Probably not. That kind of heat doesn't come from compression. Stock motors aren't built so tight in that area anyway, to where they're THAT sensitive.

Ricky's is long-term detonation. That whole thing is just ate up with it. I think his crappy tune diagnosis is on the money.