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Technical Re-torque after 10 idle years?

Discussion in 'The Hokey Ass Message Board' started by KingofThings, Apr 27, 2020.

  1. KingofThings
    Joined: Jan 28, 2012
    Posts: 30

    KingofThings
    Member

    Re-torque after 10 idle years?
    -
    My 350 Chevy engine had an issue in that I actually had to hone out a cylinder by hand to bring it up to 40 over. ( the others are 30 )
    Then I put it all back together but due to family issues I never fired her up.
    So what are your opinions please?
    Leave the heads and intake alone and fire her up after careful pre-lubricating all cylinders and running up the oil pressure manually, or should I re-torque them?
     
    Last edited: Apr 27, 2020
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  2. Arominus
    Joined: Feb 2, 2011
    Posts: 394

    Arominus
    Member

    If they were properly torqued to start I don’t know that it would be an issue. That said, if your concerned about how long it’s sat you might just eat a set of gaskets and pull it apart to clean and relubricate everything before you fire up. Assembly lube does get hard and nasty after a while. Good call on the cylinder lube too!

    Protect your investment!
     
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  3. el Scotto
    Joined: Mar 3, 2004
    Posts: 4,352

    el Scotto
    Member
    from Tracy, CA

    Depends if you used self-loosening bolts. If you used the perma-torque variety you should be golden.

    Definitely give it a squirt and a tickle, things are always better when properly lubricated.
     
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  4. Heads are fine,,,,,,,you have the right game plan.
    Lube all cylinders,,,,,rotate assembly several revolutions,,,,,prelube the system.
    It should work out great .

    Tommy
     
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  5. Boulderdash
    Joined: Jul 24, 2009
    Posts: 149

    Boulderdash
    Member

    If you honed .010" by hand, I'd be more concerned about the bore being true top to bottom.
     
  6. KingofThings
    Joined: Jan 28, 2012
    Posts: 30

    KingofThings
    Member

    I’ve thought this too and I happen to have another set of gaskets anyway. Thank you for your opinion. :)
     
  7. KingofThings
    Joined: Jan 28, 2012
    Posts: 30

    KingofThings
    Member

    I don’t think I’ve known of that type of bolt. I probably used the original bolts though the intake bolts were replaced. I’ll see if I did replace the head bolts. If I decide to go with Arominus’ option I’ll replace them.
    Thank you! :)
     
  8. KingofThings
    Joined: Jan 28, 2012
    Posts: 30

    KingofThings
    Member

    Ok thank you! :)
     
  9. KingofThings
    Joined: Jan 28, 2012
    Posts: 30

    KingofThings
    Member

    I’m a fabricator of many decades and quite careful. This cylinder was tediously snap-gauged so it is pretty dang near as perfect as can be in this way. It’s crosshatched and there aren’t any divots anywhere. I was extremely lucky to be able to save it.
    Let this be a warning to you all to never leave the exhaust pipes open to the weather. :(
    It took weeks of soaking in various lubricants then about an hour or two a day of beating on the top of the piston with an 8 pound shortened sledge on a block of 2x4.. Then from underneath with a hickory axe handle and the sledge. I did this for at least 9 days! Finally it moved almost imperceptibly and I continued beating it until the piston moved and partially broke up.
    I weighed every piece on a gram scale I bought just for this and got Summit to send me a 40 over matching piston within 2 grams of the original. They also sent the ring set.
     
  10. lippy
    Joined: Sep 27, 2006
    Posts: 4,968

    lippy
    Member
    from Ks

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