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Technical Is this 8BA salvageable?

Discussion in 'Traditional Hot Rods' started by Fread, Dec 16, 2017.

  1. Fread
    Joined: Jan 29, 2009
    Posts: 11

    Fread
    Member
    from MN

    Hi... So braking down an 8BA and it has a big crack. My thoughts are it’s not salvageable. Anyone pin a block cracked like this successfully in the past? Thanks E140CA05-377B-4AEA-97EB-200C188AE059.jpeg
     
  2. Budget36
    Joined: Nov 29, 2014
    Posts: 15,020

    Budget36
    Member

    Funny the thread for the head bolt on the right doesn't appear to have a crack in it, casting flaw maybe?
     
  3. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 5,256

    sloppy jalopies
    Member

  4. flatford39
    Joined: Dec 3, 2006
    Posts: 2,799

    flatford39
    Member

    Is there a lip?? If there is I don't know how you get a head gasket to seat.
     
  5. sloppy jalopies
    Joined: Jun 29, 2015
    Posts: 5,256

    sloppy jalopies
    Member

    the guys in the tool room praised silver solder... any chance ?
     
  6. woodypecker
    Joined: Jan 23, 2011
    Posts: 300

    woodypecker
    Member

    Look for other damage and if none and you know someone who is try the silver solder or braze. Fatal cracks are ones into combustion or valves. You will get better answers as time goes by.
     
    Donuts & Peelouts likes this.
  7. RICK R 44
    Joined: Dec 13, 2009
    Posts: 475

    RICK R 44
    Member

    Quite common crack in flattys. Not usually a problem, I would not attempt to do a repair. The 8BA in my roadster has an identical crack. Have over 75000 mi on it with no problems. Try your post on Ford Barn, great amount of flathead knowledge and experience on that sight
     
  8. Flathead Dave
    Joined: Mar 21, 2014
    Posts: 4,028

    Flathead Dave
    ALLIANCE MEMBER
    from So. Cal.

    No need to repair this common crack. Just watch the torque on that head bolt. It might not torque to spec but will still work just fine.
    Use #2 sealant on that head bolt threads.

    I have the same crack on my 8BA. No need to worry about it.

    Is the rest of the block, okay? Be sure to check the oil pan rails. Get the block cleaned and magnafluxed.

    If the cylinders need work, they can sleeve them or hone them.

    Most cracks in the block can be pinned with no problem.

    Either way, the block is in need of machining.
     
    Last edited: Dec 16, 2017
  9. RICK R 44
    Joined: Dec 13, 2009
    Posts: 475

    RICK R 44
    Member

    Jest took another look at your pic. The crack I was referring to is the top one from the head bolt hole to the water jacket hole. Would require someone with more knowledge than I to make the call on the large crack(???) at the bottom of the pic
     
  10. alchemy
    Joined: Sep 27, 2002
    Posts: 22,271

    alchemy
    Member

    It's a goner.
     
  11. Fread
    Joined: Jan 29, 2009
    Posts: 11

    Fread
    Member
    from MN

    image.jpg Thanks for all the input. Stripping off what I think might be good parts for now.. This picture is a better shot of the crack In question. Again thanks for all the input really appreciate the wealth of information here on the H.A.M.B....
     
  12. rusty valley
    Joined: Oct 25, 2014
    Posts: 4,196

    rusty valley
    Member

    with machine work and rebuild parts you can get to 3-4 grand real easy. why take a chance.
     
  13. UNSHINED 2
    Joined: Oct 30, 2006
    Posts: 1,206

    UNSHINED 2
    Member

    Ill give ya 20 bux for if you live near Wi ;)
     
  14. Kiwi 4d
    Joined: Sep 16, 2006
    Posts: 3,802

    Kiwi 4d
    ALLIANCE MEMBER

    Oh my, the first crack is normal from stud to water hole between #1 &#2 . Just run some block sealant. The second crack is a winner . Not into a combustion chamber but i suspect it a goner, not really worth pursuing and spending a bunch of wages on to confirm your suspicions. A freeze crack most likely, 3 stud holes and a water hole and it hasn't stopped yet.
     
  15. Petejoe
    Joined: Nov 27, 2002
    Posts: 12,539

    Petejoe
    Member
    from Zoar, Ohio

    Yes that crack is not done moving. I d look for a better candidate.
     

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