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How to tell if your BLOCK is ready for a Turbo?

Discussion in '1982-Present GM Diesel' started by AzzKicker, Sep 12, 2002.

  1. AzzKicker

    AzzKicker 1/2 ton status

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    I keep hearing things about before adding a Turbo to a 6.2L make sure your block is good. How would I go about checking this.

    Truck runs great, no smoke, no sputtering, no stalls, etc. Theres a little bit of smoke at startup, but it last like a 3 seconds.
     
  2. calcide

    calcide 1/2 ton status

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    Disassemble your entire engine, have the block hot tanked and checked for cracks by a machine shop. While you've got it apart, you might as well rebuild it.

    Nuke the site from orbit... It's the only way to be sure.
     
  3. arveetek

    arveetek 1/2 ton status

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    If you want to have peace of mind, remove the oil pan, and wipe down all the main bearing webs really well. Let it sit for a while, come back and look at the webs. Any cracks that might be present will be noticable by the oil that has seeped into them. If you have a lot of cracks, you may not want to turbo it.

    Personally, I wouldn't worry about it. If it's gonna fail, it's gonna fail with or without a turbo. Just put one on it and go, man!

    The other thing is to make sure you have the newer style rear main seal. The early style was a rope-type seal. The newer one is a rubber seal. I don't remember when they switched to the newer seal.

    The turbo will add more crankcrase pressure, and it's been know to blow out the rope-type rear main seals.

    Casey
     

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