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  • Chuck S.
    Expired
    • April 1, 1992
    • 4668

    #16
    Re: Isolated Cases of LS2 Oil Burning...

    Your comments agree with my assessment that over-size pistons are the answer, even if I arrived at the conclusion without that knowledge. Maybe there's another option...I wonder if you can get some good old fashioned, non-green, non-low-tension, conventional piston rings for the LS2...maybe with a self-honing, diamond dust coating? Aw, those diamond encrusted babies would probably stop the oil burning for a little while, then it would come back with a vengeance as the pistons began to rattle around in the bores.

    If John doesn't know the General is doing at St. Catherines (sp?), I certainly don't know, but it seems the cylinder bore requirements of low-tension rings would force all manufacturers to use the deck-plate honing technique with the low tension rings, or potentially face high customer complaint rates and warranty costs. Anyway, it isn't happening often...maybe it's just the normal failure rate for on-the-edge technology.

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    • Clem Z.
      Expired
      • January 1, 2006
      • 9427

      #17
      the only late model corvette i have owned

      that burned oil was my 02 because it was a early one that used a 01 ZO-6 short block. GM went to low tension oil ring expander to get better HP and these engines used oil. the fix was a "rapier" design second ring to scrape the excess oil from the cylinder wall and a heavier oil ring expander. i never had mine "fixed" because it only used a quart every 2000 miles. all the others including my 05 LS2 uses a quart in about 4000/5000 miles which is oil change time so no problem.

      Comment

      • Dick W.
        Former NCRS Director Region IV
        • June 30, 1985
        • 10483

        #18
        Re: Isolated Cases of LS2 Oil Burning...

        Aw, just feed it a little Bon Ami through the intake. Guarontee that it will seat the rings! Used to do this in the '60's to seat chrome rings.
        Dick Whittington

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