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? about broken harmonic balencer bolt in crank

Discussion in 'The Hokey Ass Message Board' started by kyle paul, Jan 27, 2004.

  1. ok heres my question a kid i no had a thick balencer and went to a thin one with out changibg the long bolt.so i guess it bottomed out and he just keep tighting till he snaped it.so what the best way to pull the broken bolt out /i think the bolt is broken flush with the front of the crank as far as i could see the balencer was on when i looked at it .i told him the rocky way ,to weld a pipe the same size as the bolt and fill the hole in the pipe with a weld.then weld a bolt to that and pop it out .does that seem ok or will it mess up the crank . its a brand new crate motor 0 miles .or is there a better wat to pull it out .thanks kyle
     
  2. Hot Rod To Hell
    Joined: Aug 19, 2003
    Posts: 3,036

    Hot Rod To Hell
    Member
    from Flint MI

    "a kid I know" HAHAHAHAHA! [​IMG]
     
  3. Hot Rod To Hell
    Joined: Aug 19, 2003
    Posts: 3,036

    Hot Rod To Hell
    Member
    from Flint MI

    what was the reason for the change???
     
  4. no clue why he changed it .
     
  5. fab32
    Joined: May 14, 2002
    Posts: 13,985

    fab32
    Member Emeritus

    I don't buy the long bolt, thick/ thin balancer deal. Why would anyone go from a thick to a thin one anyway. If its a crate motor it came with the correct balancer. It sounds like SOMEONE f**ked up and is looking for someone to bail him out.

    Frank
     
  6. Nocero
    Joined: May 16, 2002
    Posts: 489

    Nocero
    Member

    My 2 cents. I'd drill a hole in the center of the bolt buy the largest LEFT HANDED thread tap I could fit in the hole without breaking into the crank threads. Drill,Tap,and find a grade 8 left handed bolt the same size. Lightly heat the center (and I do mean lightly like no more than a couple hundred degrees. Sticking a small soldering iron in the hole for 10 min works pretty good.) Thread the bolt in and try to turn it out. This worked for me a couple times on some broken bolts. Some people will probably disagree but It works if you are carefull.
     
  7. wayfarer
    Joined: Oct 17, 2003
    Posts: 1,789

    wayfarer
    Member

    A friend of mine sheared off the bolts that mounted his power steering pump flush with the block a couple months ago and I just placed a nut up against the block with the hole lined up with the bolt and filled the center of the nut with weld. Then we just put a socket on the nut and pulled the sheared bolts off. Get a big nut and give it a try.
     
  8. Nocero
    Joined: May 16, 2002
    Posts: 489

    Nocero
    Member

    Wayfarer's idea works great too. I'd try that first but if it's too tight the left hand bolt thing is kinda a last resort thing but should work.
     
  9. Speedy 3s..I didn't say anything about using a pipe. The method I outlined involved welding a washer to the broken off bolt..through the hole in the washer. Then, welding a nut to the washer. It involves a lot of heat and may not be so good for the crank snout. I'd try to drill down the center of the bolt first........all the way to the bottom of it to attempt to take the pressure off it where it's bottomed out in the hole. Once the pressure is relieved, the bolt should turn out easily unless the HAMB handed lout has distorted the threads when he was trying to impress his girlfriend with his arm strength...
     
  10. Gr8ballsofir
    Joined: Apr 21, 2001
    Posts: 768

    Gr8ballsofir
    Member

    What Rocky said. Drilling and easy out doesn't work too well on case hardened bolts!!
     

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