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Thread: gas in crank case

  1. #1
    Junior Member SHOW GUEST
    Join Date
    Feb 2009
    Posts
    2

    gas in crank case

    running two holley 670 center squirters on a tunnel ram bbc 454. have gas in oil, checked carb floats is their any other way
    thanks Jack

  2. #2
    It depends on alot of varies..Compression is a big factor...I run a 572 bbc with a Holley that was modified to reach 1500 cfm on the flow bench.I can change the oil,and after a couple of runs,the oil will thin and smell of race fuel....I change it regularly...It is a sacrifice...Ya wanna go fast,Ya pay...Ya might also check the rings with a leekdown test...Good Luck!!!!! dan

  3. #3
    I am alson running 15:1 compression on the street...SERIOUS!!!!

  4. #4
    Member MASTER JOURNEYMAN
    Join Date
    Feb 2003
    Location
    Louisiana
    Posts
    37
    the last time i saw that was from a mechanical fuel pump leaking. Good luck

  5. #5
    Senior Member RACING JUNKIE
    Join Date
    Dec 2004
    Location
    austin texas
    Posts
    729
    Too much carb, too much fuel pressure, Bad needle and seats, worn out engine, Electrc pump left on too long?.....

  6. #6
    Senior Member MASTER BUILDER
    Join Date
    Dec 2004
    Location
    out of my mind in Kalamazoo, MI
    Posts
    179
    Quote Originally Posted by kwkracing
    Too much carb, too much fuel pressure, Bad needle and seats, worn out engine, Electrc pump left on too long?.....
    ...check your fuel pressure at the carbs...blowing by the needle/seat...causing the fuel to flood past the rings...next do a cylinder pressure chk...may be also getting past the rings...


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