Fixing a crack in a Crankshaft

Discussion in 'InsideTopAlcohol.com Tech Questions' started by 57Chev, Dec 18, 2019.

  1. 57Chev

    57Chev Member

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    Just want some opinion here for reliability on a repaired Crankshaft. I have a new one coming and wondering if I should fix my old one as a spare. It has a crack on number two main. Its out of a Screw Pro Mod.


    Thanks
     
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  2. aj481x

    aj481x Member

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    Cracks in the radius? Clearly visible with mag?
     
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  3. 57Chev

    57Chev Member

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    By mag yes. its about 1/4 of the way around the journal. Right on the edge.
     
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  4. aj481x

    aj481x Member

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    Probably not repairable, might keep as emergency spare, it was running when you took it out.
     
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  5. 57Chev

    57Chev Member

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    Ya, was doing yearly maintenance and had the crank tested and was cracked.
     
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  6. Fueler75

    Fueler75 Member

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  7. kosky racing

    kosky racing Comp Eliminator

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    If its broke don't waste money shipping it anywhere done this to many times -----Broken is Broken
     
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    Will Hanna likes this.
  8. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    Hate to say it, if it's cracked that far around, it's junk. If you have someone that is experienced with blown alcohol/racing cranks, it might be worth magnafluxing to confirm it is a crack. If it's a no doubter, it's junk.

    I've seen broken cranks just break and cause minimal damage. I've also seen broken cranks destroy everything in a short block - block needed 5 saddles, so it wasn't worth repairing. Rocker shafts were bent, flywheel was junk, tore up parts in the front section of the trans, so it was costly.
     
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  9. REEHL EQUIPMENT

    REEHL EQUIPMENT Authorized Merchant

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    Here's a pic of a cracked crankshaft! IMG_1227.jpg
     
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  10. REEHL EQUIPMENT

    REEHL EQUIPMENT Authorized Merchant

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    Any questions? LOL
     
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  11. Unlimitedaero

    Unlimitedaero Member

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    They make great table lamps......
     
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