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Thread: oil pump problem

  1. #1
    Member JOURNEYMAN
    Join Date
    Sep 2006
    Location
    alabama
    Posts
    33

    oil pump problem

    i have a problem with my oil pump getting loose,i've been told it's because of the 3 step limiter when i do a burn-out.anyone had this happen? how much should the oil pump bolt be torqued? ?

  2. #2
    Senior Member EXPERT BUILDER
    Join Date
    Aug 2005
    Location
    Tell City, IN
    Posts
    356
    Never had one come loose. I use a 2 step on the launch with no issue's like that. I had broke a few but that's another story. I torque mine to 50 Ft.Lbs. You might want to make sure you have the right bolt for the pump also there are some that are differant..

  3. #3
    Senior Member RACING JUNKIE jmarksdragster's Avatar
    Join Date
    Jul 2007
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    Florida
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    635
    SBC should be 65...
    Mark Whitener
    http://racingfuelsystems.myfunforum.org
    __________

    Good work isn't cheap, and cheap work can't be good.

  4. #4
    Member JOURNEYMAN
    Join Date
    Sep 2006
    Location
    alabama
    Posts
    33

    oil pump problem

    thank's guy's ,i got the pan off and the pump had broke.you think i should check the main & rod bearings .the last time i looked at the oil pressure is when i staged the car.when i crossed the finish line i saw it was on 0

  5. #5
    Member JOURNEYMAN
    Join Date
    Sep 2006
    Location
    alabama
    Posts
    33

    oil pump problem

    i forgot to say a friend of mine has broke 3 of these oil pumps,i just learned today we bought them at the same store.i don't know the name of the pump it has USA on the bottom of the pump,these pumps are no good

  6. #6
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    what pump is it ??


    a Moroso/Titan Billet pump is a good investment :!:
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  7. #7
    Member JOURNEYMAN
    Join Date
    Sep 2006
    Location
    alabama
    Posts
    33

    oil pump problem

    the pump has m-55 and usa on the bottom,melling i guess.i should have spent more and got a better one.probably cost me a motor.... lesson learned.

  8. #8
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    happens to all of us ... oil pumps are one of the best places to spend good money.
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  9. #9
    Senior Member RACING JUNKIE jmarksdragster's Avatar
    Join Date
    Jul 2007
    Location
    Florida
    Posts
    635
    Do not use a Melling M55 on ANY race engine, and not wise on anything. They are not made like they used to be. Instructions in the box tell you not to use them with solid mounts. And as a second note, Melling no longer uses billet gears in ANY of there pumps, as well as what they sell to other companies. This includes their select and aluminum pumps. Only 3 companies to my knowledge use billet gears, CVR, Titan, and Moroso's gerotor pump but NOT their others. CVR is the least expensive and is well made. Here is some more reading on the subject.
    http://speedtalk.com/forum/viewtopic.php?t=6868
    Mark Whitener
    http://racingfuelsystems.myfunforum.org
    __________

    Good work isn't cheap, and cheap work can't be good.

  10. #10
    Junior Member APPRENTICE
    Join Date
    Jun 2008
    Location
    rock hill sc, 29730
    Posts
    15
    Found out melling had redesigned m55 per gm to save weight. Don't know why. Melling's m55hv has not been redesigned and it works great. Dirt track customers have had the same breakage problem.
    mccraw machine & performance parts
    170 davis street
    rock hill sc, 29730
    803-329-2343
    [email protected]


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