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Thread: starter bolt broke off

  1. #1
    Join Date
    Nov 2007
    Location
    Port Huron, MI
    Posts
    105

    Default starter bolt broke off

    one of my starter bolts broke off inside the block last night. and since i don't have a tap and dye set, i'm gunna be forced to pay someone else to touch my baby. this is a sad day for me, and my wallet. so do you guys think that after they get the broken piece out, are they doing to have to tap it for a larger bolt, like i thought i would of had to do. i know the machanic pretty well and he's gunna work with me on the price, but it still makes me really mad, exspecially that i have to miss work today.
    89 K2500 6.2 4X4 3/4 TON 4x4 TH400
    87 DODGE D50 360 727 TORQUE FLITE FORD 9'' MANY MODS--- IT'S FOR SALE

  2. #2
    Join Date
    Sep 2001
    Location
    Lubbock TX, USA
    Posts
    4,194

    Default

    After removing the starter, the piece can likely be retrieved by drilling the center of the remaining stud and using an easy-out. Another method is using a reverse rotation drill bit. The remaining piece is not going to be that tight in the block, because the missing bolt that held tension against the threads is now missing.

    Getting the broke part out is the best method, no need to drill out for larger hole.

    Do some searching on "starter bracket", which will lend some info onto possibly why you did break a starter bolt.

    This missing bracket and or bolts/nuts that attach it will almost certainly lead to a broken starter bolt eventually.

    Been there done that too
    1982 C10 SCSWB 6.5TD, mods too extensive to list. (13.69 1/4 mile @94.6 MPH) RACE TRUCK
    1982 C10 SCSWB 6.2NA, 2.73 700
    1986 C10 SCLWB 6.2TD 3.73 700
    1989 V20 SUB 6.2NA, 3.73 400
    1994 G20 VAN 6.5NA, 3.42 60E
    1994 K20LD ECSWB 6.5TD, 3.42 80E
    1995 K20 SUB 6.5TD, Wrecked, ran into by stupid teen.
    1995 C3500HD DRW 6.5TD, 12' Flatbed 5.13 80E
    1995 C3500HD DRW 6.5TD, 18' Rollback Wrecker 4.63 80E
    1994 C20HD ECLWB 6.5TD 3.73 80E Wifes Truck.
    1995 C20LD ECSWB 6.5TD 3.73 80E
    1995 K20LD SCLWB 6.5TD 3.73 80E
    1996 K30 DRW 6.5TD 4.10 80E
    1997 C10 Tahoe 2Door 2WD 5.7L to 6.5 Conversion Underway

  3. #3
    Join Date
    Feb 2000
    Location
    Montana
    Posts
    11,419

    Default

    What John said....

    I'd add that you need to be very careful with centering the drill bit onto the broken bolt. The cast iron block is much softer and easier to drill than the bolt. If the bit wanders off the broken bolt, it'll wallow out the threaded hole very quickly.

    Jim

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