Jeep crew - need help with an overheating problem

Discussion in 'OT Driven' started by Reject, Aug 22, 2005.

  1. Reject

    Reject Active Member

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    83 CJ7 with a LT1 out of a 97 Z28. Engine has 50,000 miles on it. It has a be cool radiator and one of the best electric fans you can buy. It moves a ton of air.

    Went offroading in Tellico is weekend and the damn think kept overheating. I know its not a air moving problem, we took the hood off and the engine actually ran hotter at that point. Already put a new water pump on and tried some of that water wetter stuff. I'm out of ideas here. The radiator is made for this application, what else could it be?!?

    Could the engine be running lean thus creating more heat?
     
  2. Reject

    Reject Active Member

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  3. Reject

    Reject Active Member

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  4. Jeffery

    Jeffery Guest

    I had an LT1 in my wrangler with a 4 core radiator and flexalite puller fan, never had a problem. Your B-cool is a crossflow aluminum right? That should be better. What kind of fan are you using? A pusher or a puller?
     
  5. Jeffery

    Jeffery Guest

    Has it ever ran cool? You do want to make sure your water is running in the right direction with your hoses, you do know the LT1 coolant flow is reverse of a normal chevy small block right?
     
  6. jeeps4u

    jeeps4u OT's Master Tech

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    serpentine belt setup and v-belt setup will run in different directions.. make sure you have the right pump for your setup
     
  7. Reject

    Reject Active Member

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    Has a puller fan, and a fan shroud. Has never run at the right temp since install. I knows its a reverse flow design, havn't checked to see if its flowing right though. Don't see how it wouldn't be.

    Replaced the t-stat already.
     
  8. Reject

    Reject Active Member

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    It all factory equipment on the lt1.
     
  9. Jeffery

    Jeffery Guest

    Factory computer?
     
  10. Jeffery

    Jeffery Guest



    :rolleyes: All B-cools are aluminum and crossflows, 1 core :ugh:
     
  11. Reject

    Reject Active Member

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    yup
     
  12. Jeffery

    Jeffery Guest

    Let me ask you this, there are two small coolant hoses in addition to the main hoses running to your radiator, what did you do with those? Are they connected or did you just block them off?
     
  13. Reject

    Reject Active Member

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    blocked off
     
  14. Jeffery

    Jeffery Guest


    Hence your problem. I tried that too and it doesnt work. Those lines actually circulate coolant in around your heads.


    Hook them back up, I had to use some T-fittings from Napa to get them plumbed into the hoses right.


    I think we found your problem, please paypal me enough cash for a B-cool myself, my 4-core is not up to the duty the new 383 requires.

    I hated my LT-1, fricken opti-spark was a joke and I burnt out 2 by splashing through a tiny mud puddle.
     
  15. Jeffery

    Jeffery Guest

    You are safe to bypass the coolant lines that run through your throttle body though, those do nothing and were installed by the factory to improve running in cold weather.
     
  16. Reject

    Reject Active Member

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    We have run through rivers fine with the opti spark :x:
     
  17. IDMO

    IDMO OT Supporter

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    what the fuck, Jeffery actually putting something worthwhile into a thread? :wtf:
     
  18. Reject

    Reject Active Member

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    Thanks for the help, I'll check it out this week and let you know how it works
     
  19. Reject

    Reject Active Member

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    Is there a certain way the hoses have to be plubmed into the main lines?
     
  20. Captain Haddock

    Captain Haddock Blistering Barnacles OT Supporter

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    :wtf: Is today opposite day? If so:

    Jeeps should not be modified for offroad use. I laugh at people parked in the mall that have scratched up their vehicles while mine looks nice
     
  21. IDMO

    IDMO OT Supporter

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    good answer
     
  22. Jeffery

    Jeffery Guest

    I think it probably does matter to some extent, as long as you have coolant flowing instead of circulating, it will be much better than what you have now.
     
  23. IDMO

    IDMO OT Supporter

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    grand
     

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