Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

Pics/questions about a busted 6.2L crank

Discussion in '1982-Present GM Diesel' started by kennyw, Feb 12, 2006.

  1. kennyw

    kennyw N9PHW Premium Member

    Joined:
    Jun 9, 2002
    Posts:
    13,223
    Likes Received:
    94
    Location:
    Stevens Pass Highway, WA
    Here is the damage... Crank is snapped in half, right behind the #3 bearing journal. In front of #7 rod. I had a brand new timing set and harmonic balancer and a good used flywheel for a 6.2L on the motor... wondering if these motors are known for snapping cranks even with everything else in good shape? Or should I be looking for other problems somewhere?

    I'm gonna have to tear it down now to remove the crank anyway so I'm thinking a cheap rebuild, new gaskets and bearings is in order just because its torn down. Don't think I need to redo the rings as it didn't use oil and had good compression already. Started without hesitation, even in cold weather (manual glowplug setup as well).

    02-12-2006 003.jpg

    02-12-2006 002.jpg
     
  2. camiswelding

    camiswelding 1/2 ton status

    Joined:
    May 25, 2003
    Posts:
    2,545
    Likes Received:
    0
    Location:
    Redding, CA
    you want mine...I know you do
     
  3. arveetek

    arveetek 1/2 ton status

    Joined:
    Mar 1, 2002
    Posts:
    722
    Likes Received:
    0
    Location:
    Granby, MIssouri, USA
    Yes, the 6.2L does have a minor reputation for snapping cranks. Usually it tears up the block in the process, though.

    I'd really, really inspect the block for cracks in the block, especially the main web area.

    Could be the damage was done to the crank before the balancer was replaced.

    Casey
     

Share This Page