Crank hub galling

Discussion in 'PSI Superchargers Tech Questions' started by Tim Stevens, Dec 28, 2006.

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  1. Rapid Randy AA/FA

    Rapid Randy AA/FA Comp Eliminator

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    Mark,

    At PRI, the RCD guys had a splined crank and a new splined hub. I was hoping someone would have responded to your question.

    Rapid
     
    #21
    Last edited: Jan 2, 2007
    Rapid Randy AA/FA, Dec 29, 2006
  2. ITS IN MY BLOOD

    ITS IN MY BLOOD TAFC

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    David baca runs a splined hub
     
    #22
    ITS IN MY BLOOD, Dec 29, 2006
  3. T.Howell

    T.Howell Member

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    A question:
    The titanium hub seemed to cure the hub galling issue. What would titanium pushrod cups do?
     
    #23
    T.Howell, Dec 30, 2006
  4. secondwindracing

    secondwindracing top alcohol

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    good call T Howell..... this guy is thinking:) Dave Lowe
     
    #24
    secondwindracing, Dec 30, 2006
  5. BOBBY MARTINDALE

    BOBBY MARTINDALE TA/FC

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    Hubs

    Lots Of Never Seize On Hubs And Crank= No Problem.stp On Push Rod Cups And Prime Eng. W/out Spark Plugs ,oil 100psi=no Problm
     
    #25
    BOBBY MARTINDALE, Jan 1, 2007
  6. was R4K

    was R4K Member

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    we have ordered splined crank from Bryant, but it is not yet delivered or tested by us- but we have high hopes:)
     
    #26
    was R4K, Jan 2, 2007
  7. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
    Staff Member

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    spline crank

    talked to lance at flanakin crankshaft specialties about them. said they work good...about half the fuel teams are running them. it's an expensive changeover, especially if you have a lot of gear.

    in the alky ranks the above mentioned remedies appear to be working...mainly get the titanium hub. i have yet to hear someone that has done the above methods and still have a bunch of galling problems....at least on alky.
     
    #27
    Will Hanna, Jan 2, 2007
  8. afuelfreak

    afuelfreak New Member

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    splined?

    why would you want less contact area between crnk & hub, ? are the hubs shearing the the keyways ? & am sure a splined crnk cost more $$ & you probably need some new frt cover parts from rcd also ? , sounds like a pretty expensive fix , to me
     
    #28
    afuelfreak, Jan 2, 2007
  9. lugnut

    lugnut Member

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    If the hub is goin on tight , could the gauling be occuring during installation? We take a sand paper style flapper wheel and polish the inside of the hub,we also use neverseize and have never had any gualing problems.Also check the crank hub bolt every few runs.
     
    #29
    lugnut, Jan 3, 2007
  10. nitrohawk

    nitrohawk New Member

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    Most of the gauling problems are the result of punishment the engine is taking. Detonation is the main culprit. All of the above remidies will work if the engine is happy.
     
    #30
    nitrohawk, Jan 8, 2007
  11. OzAlky

    OzAlky Member

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    I agree 100%.
    If you ever have a problem on a run that causes det. Loss of fuel pressure, loss of a cylinder, etc. the galling will be really bad.
     
    #31
    OzAlky, Jan 8, 2007
  12. Greg Sereda

    Greg Sereda New Member

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    One area that no one has mentioned to do when installing your crank hub to the crank is to pre install the key ways on the crank and check the dimensions of the crank and key ways and then check the dimensions of the hub at the key way to make sure you have the proper fit. I fill fit my keys to the proper dimensions to eliminate any problems with to tight or too lose keys which could contribute to the problem of gauling. It’s surprising the difference of the fit of the hub if you take the time to do this little extra step.
     
    #32
    Greg Sereda, Jan 9, 2007
  13. afuelfreak

    afuelfreak New Member

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    The Big Fix

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    #33
    Last edited: Jan 9, 2007
    afuelfreak, Jan 9, 2007
  14. Woodchip

    Woodchip Top Alcohol Dragster

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    instead of 6 foot bars and pipes on the end of torque wrenches how come ive never seen anybody use a torque multiplier? Also if you have the pan off you can just about fit a hardened deep socket between a counterweight and above the pan rail on a billet BAE block to hold the crank.
    A-FuelFreak that bolt & washer worked like a charm. thanks again(Atlanta)
     
    #34
    Woodchip, Jan 12, 2007
  15. nitrohawk

    nitrohawk New Member

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    You can use a torque multiplier. Its just that most people don't have one and they are pretty expensive.
     
    #35
    nitrohawk, Jan 13, 2007
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