Ring life ?

Discussion in 'PSI Superchargers Tech Questions' started by NENE, Sep 17, 2012.

  1. NENE

    NENE Member

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    How can you recognize a good ring from a worn one ? (except to mesure the ring gap)
    Is there something to check on the surface ?


    Also, some racers believe on a wider ring gap for the second ring and a tighter on the first, it goes backward to all I used to learn in the past about rings. What's best ?


    thanks for all advices
     
    #1
    NENE, Sep 17, 2012
  2. Mike Canter

    Mike Canter Top Dragster
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    The second ring should be as wide as the top ring. This is to let the gases escape so it prevents ring flutter. Actually the ring can go bad and loose tension due to heat and still have a good gap. Life depends on what ring material is being used and how hot you get the temps and if you have bad detonation or not. You need to count runs and do regular leakdown tests and keep records. When the percent leakdown rolls off then it is time to change rings
     
    #2
    Mike Canter, Sep 17, 2012
  3. NENE

    NENE Member

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    Here is what I mesured on my used engine :

    first (Dykes) : 0.030"

    second : 0.022"

    for a 4.53" Bore

    Do you advise to enlarge the second ring gap or let it like it is ?

    thanks
     
    #3
    NENE, Sep 17, 2012
  4. Mike Canter

    Mike Canter Top Dragster
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    If it was me I would enlarge it to be .028-.030
     
    #4
    Mike Canter, Sep 17, 2012
  5. Frank Kramer

    Frank Kramer New Member

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    Running top and second at 0.028" on the same bore size

    Frank
     
    #5
    Frank Kramer, Sep 17, 2012
  6. underby6

    underby6 Active Member

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    Run the second ring .010 more gap than the top ring.

    Brandon Booher
    NHRA TAD #34
     
    #6
    underby6, Sep 17, 2012

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