Is JB Weld any good for cracked blocks?

Discussion in 'Wrenchin' Secrets' started by Oz72RivGS, Aug 18, 2004.

  1. Oz72RivGS

    Oz72RivGS Member

    Hairline crack at gasket face between cylinders 3 and 5. Is JB weld any good for this... :Do No:

    save a complete teardown/rebuild and weld/sleeving? :Brow:

    Motor is stock 72 Riv 455 GS (stage 1).
     

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    Oz72RivGS, Aug 18, 2004
    #1
  2. Mike Atwood

    Mike Atwood The Green Machine

    JB Weld won't help you on this one....sorry to say. I would just replace the block.

    Mike
     
    Mike Atwood, Aug 18, 2004
    #2
  3. BadBrad

    BadBrad Got 4-speed?

    A little club soda will take that out! Seems to work for everything else too.
     
    BadBrad, Aug 19, 2004
    #3
  4. GSXMEN

    GSXMEN Got Jesus?

    If it's a numbers matching type of deal and you want to save the block, you might be able to have the crack pinned. Just depends on how bad the crack is. A good welding shop should be able to repair it also.
     
    GSXMEN, Aug 19, 2004
    #4
  5. doc

    doc Well-Known Member

    sleeve both cyls and have the deck welded. that should do the trick. Doc
     
    doc, Aug 24, 2004
    #5
  6. Mr Big

    Mr Big Silver Level contributor

    Once had a block "numbers matching" pined.

    It worked successfully. The block must be heated then slowly cooled...a specialty shop would be advisable.
     
    Mr Big, Aug 25, 2004
    #6
  7. Ken Mild

    Ken Mild King of 18 Year Resto's

    Club Soda for a crack? :confused:
     
    Ken Mild, Aug 25, 2004
    #7

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