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oops crank damage?

Discussion in 'Early CJ5 and CJ6 Tech' started by nyejos11, Feb 28, 2006.

  1. nyejos11

    nyejos11 Member

    I accidentally dropped my 225 crank on the concrete from about 2 1/2 feet. It pretty much landed flat across several beefy counter weights. Do you think it is OK? I think with the beefyness built into this thing that it is prolly OK. I'll have it checked for cracks.

    Josh
     
    nyejos11, Feb 28, 2006
    #1
  2. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    I don't think cracks would be so worrysome as bending. The books say you should always stand a crank on end, and tie it up so it won't fall over... I thought both standing on end and not falling over was because it might get bent. You can make a rough check for runout by putting it in the block without the rear main seal and seeing if it spins freely. You could also plastigage at different rotations.
     
    timgr, Feb 28, 2006
    #2
  3. Patrick

    Patrick Super Moderator Staff Member

    It's fine... If it landed on the counter weights and didn't damage any of the machined journals.... If it won't withstand that, I wouldn't expect it to hold up to the forces and thermals of normal use...
     
    Patrick, Feb 28, 2006
    #3
  4. 181jeep

    181jeep Banned

    x2 what patrick said.

    JB
     
    181jeep, Mar 1, 2006
    #4
  5. Warloch

    Warloch Did you say Flattie??? Staff Member

    Did you check the floor for cracks?
     
    Warloch, Mar 1, 2006
    #5
  6. w3srl

    w3srl All-around swell dude Staff Member

    x2. Might have to have the garage floor magnafluxed to check for cracks.... <kidding> R)
     
    w3srl, Mar 1, 2006
    #6
  7. nyejos11

    nyejos11 Member

    I have a feeling the crank won this round. It blew out a chunk of concrete about 3 inches across and prolly 3/8-1/2 inch deep! Beefy huh?

    Josh
     
    nyejos11, Mar 1, 2006
    #7
  8. Warloch

    Warloch Did you say Flattie??? Staff Member

    My foot says it's not surprised... Been there, felt that, got the bruse.
     
    Warloch, Mar 1, 2006
    #8
  9. Hippo393

    Hippo393 Jeepless

    Chuck...your foot?? :shock: Ouch!!

    Bet it made ya feel a bit 'cranky'. :D
     
    Hippo393, Mar 1, 2006
    #9
  10. michigan_pinstripes

    michigan_pinstripes I'm not lost, I'm wandering

    IIWM, I would not hesitate to chalk up the oops as a bad experience and take it to the machine shop (unless it landed 'zactly flat which is nearly impossible). That's just me but I spent a short tour of duty in the engine remanufacturing industry and a loose crank bends relatively easy. If that kind of drop happened out in the plant, it would definately go back to the balancing jig or to the scrap bin.

    Not to scare you, but be cautious. Yours should be 100% fixable.
     
    michigan_pinstripes, Mar 1, 2006
    #10