392 Runs HOT! Boils Over :(

Discussion in 'General IH Tech' started by J.J., Sep 17, 2020.


  1. kdsmit

    kdsmit Binder Driver

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    No the PO had the heads off and redid them and put it back together and it would not run. The truck came from New Mexico and he did not bother to put anti-freeze in it. It sat there for some time and apparently, at some point, it got cold enough to freeze. I bought it as a non runner and was able to get it running, but it had a overheating problem, so I pulled the heads and found the cracks in the block. So now I have a boat anchor, but no boat.
     
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  2. J.J.

    J.J. Lives in an IH Dealership

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    ugh, I don't like boats either.

    JJ in TN
     
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  3. RinTX

    RinTX High Wheeler

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    I like boats...
    7DABAD9A-07B5-40F5-9392-AA2E5CB49811.png
     
  4. jeff campbell

    jeff campbell Lives in an IH Dealership

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    Likewise !
     
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  5. Chris Cooper

    Chris Cooper Binder Driver

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    Break Out Another Thousand.
     
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  6. jeff campbell

    jeff campbell Lives in an IH Dealership

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  7. J.J.

    J.J. Lives in an IH Dealership

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    Found part of the issue today, the passenger side water jackets completely stopped up. Ive been at it with an air hose, wire, and shop vac. No sign yet of cracked heads or a failed head gasket but dang, they were clogged shut.

    [​IMG][​IMG][​IMG][​IMG][​IMG][​IMG]
    JJ in TN
     
  8. Jeff Jamison

    Jeff Jamison Lives in an IH Dealership

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    I was expecting to see metal head gasket,but the more Iam thinking I remember hearing improved cooling 392s never had metal ones.Thats alot of gunk in there,maybe you over heated with all that pluged up and blew the gasket somewhere,hope thats all.
     
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  9. mallen

    mallen Y-Block King

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    Did you pull the accessable core plugs on the side of the block? That might help.
     
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  10. mallen

    mallen Y-Block King

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    Check the parts catalog for the pn, then see if you can find a picture of a nos head gasket and that should verify what it's supposed to be.
     
    Last edited: Sep 24, 2020
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  11. winchested

    winchested Y-Block King

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    Those exhaust gas deals in the coolant have been known to be bogus so don't always believe that.

    Looks like you have found the problem.
     
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  12. Ron A

    Ron A High Wheeler

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    I have a friend who buys a lot of old cars. What you are doing now, he does to almost all of them. Then the inspection and reassembly. If things don't look good, off to the machine shop or whatever needs to be done. I helped him tear into a 327 that was in stuffed into a 1956 Impala. Had some sort of weird bio mat inside. Sort of looked like moss. Pressure washer struggled to get the stuff out. He let it dry out and that junk shrunk and cracked. Blew right out with an air compressor. Never know what you are going to find in those jackets.
     
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  13. J.J.

    J.J. Lives in an IH Dealership

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    If the head gasket was blown, shouldn't it be obvious? And if the heads were cracked? I went over them with a really bright flashlight and didn't find anything.

    Whats odd about it too is it is concentrated on the passenger side, drivers not bad at all. The old guy I got the truck/engine from told me it was originally in a Loadstar wrecker that had rolled. Must have put straight water in an and it leaned or was parked on a hill where it was mostly on one side? Its actually blowing out pretty easy, just messy. Going to go after the block today.

    JJ in TN
     
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  14. RinTX

    RinTX High Wheeler

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    I would think the failed gasket area would be obvious.
    I am married so - I am often wrong...
     
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  15. J.J.

    J.J. Lives in an IH Dealership

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    HAHAHA me too.

    JJ in TN
     
  16. J.J.

    J.J. Lives in an IH Dealership

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    it is composite, I should have taken a pic of it, but it is original and has the IH part # on it. I seem to recall that as well, the 392s were all composite and the 345 and 304s were metal. That info verified here too with a couple of other 392 guys.

    JJ in TN
     
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  17. J.J.

    J.J. Lives in an IH Dealership

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    I cleaned up both heads and no visible cracks, will spend some time in the engine bay tomorrow and clean the block.

    JJ in TN
     
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  18. Michael1971

    Michael1971 Farmall Cub

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    Thats a good one! I think I might need to steal it...
     
  19. Chris Cooper

    Chris Cooper Binder Driver

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    It was always obvious on my Abarth: the area where the gasket gave out would have combustion byproducts on the head gasket & block sealing surfaces at the lip of the cylinder.
     
  20. J.J.

    J.J. Lives in an IH Dealership

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    Pics of parts:

    Head Gasket and Dowel pin:

    [​IMG][​IMG][​IMG][​IMG]

    JJ in TN
     
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