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Thread: piston ring end gap ?

  1. #1
    Senior Member SENIOR BUILDER
    Join Date
    Sep 2007
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    Div VI
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    piston ring end gap ?

    What is everyone running for end gap, I'm going 540 bbc, with the odd spray of 250. conventional rings. running on pump gas. street / strip.. manufacturer says ..008 x bore for top ring, and .0055 x bore for second ring, which gives me about .0036 / .0025. does this sound tight or loose ?
    .




    New build, we`ll see what we get. lol

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
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    La.
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    2,890
    Don't know if i agree with the manufacturer or not. but i run .0075 per inche on the top ring for pump gas with a 250 shot and i also run the same on the second ring because it cut's down on ring flutter on the second ring and seals better.
    By the way you have 1 too many "0" in your equasion/math.

    JMO

    Zip.

  3. #3
    Senior Member SENIOR BUILDER
    Join Date
    Sep 2007
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    Div VI
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    Thanx Zip. I just noticed that. lol. I like your #s . I'm thinkin of runnin 034 / 036
    .




    New build, we`ll see what we get. lol

  4. #4
    Senior Member EXPERT BUILDER
    Join Date
    Jun 2005
    Location
    potash country
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    262
    With that 540 she's still going to be a nasty bird and I'm sure a real contender for another championship,good luck this summer Brian!


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