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Engine temp when towing

Discussion in '6.9L IH & 7.3L IDI Diesels' started by culver21, May 26, 2019.

  1. culver21

    culver21 Full Access Member

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    just getting a feel for some ideas on what I can do to keep the engine temp down when towing. It runs up to about half on the stock temp gauge and then I just baby it from there so it doesn’t climb anymore. 7.3 idi with hypermax turbo. IP and injectors just all redone. Shop that did all the work set the timing but did it without a timing meter. Haven’t had a chance to hook up the pyro gauge yet
     
  2. The_Josh_Bear

    The_Josh_Bear Full Access Member

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    On any 7.3 the stock gauge is basically useless. You need an aftermarket gauge to really know what your temps are. Sorry to say it but that's the reality for us. The nice thing if you're on a budget is that the cheap mechanical equus gauges at Orielly work just fine for this purpose.

    And get that pyro running! That'll tell you the other half of the story, and will let you back out of the throttle much sooner if needed than a coolant gauge ever will.

    My bet is the shop followed the Hypermax rule book and you arent overheating at all. They are pretty conservative with extra fuel for obvious reasons. But still the gauges are a must. Plus then you can tune it with more/less fuel and timing.
     
    Cubey, culver21 and DaveBen like this.
  3. franklin2

    franklin2 Full Access Member

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    I 2nd the suggestion get a aftermarket gauge set. It amazes me how many people rely on the crappy factory gauges to monitor their truck's performance. Even the cheap mechanical gauges you can get at the part stores are better than the factory gauges. Someone told me once the only thing "normal" was the setting on a washing machine.
     
  4. Clb

    Clb Another old truck Supporting Member

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    Statt opens at 190. fully at 200-+ deg ....
    210 deg...umm warmed right up.
    300 deg err hot lift...
    I am seeing 220 on 8% grades pullin 7k on the pin
    200-210 casual pulls after 6 hrs of sustained haulin.
    Hot and sweaty at 1000 -1100 deg egt. 200+ coolant, 11-12# boost faccett failing all day long. Holley on deck!
    Just to keep the ip happy.
    Ymmv
     
    Last edited: May 26, 2019
  5. The_Josh_Bear

    The_Josh_Bear Full Access Member

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    I tested my motorcraft stat and it wasnt fully open till nearly 212. I also hovered around 220 lately on but hills with my camper and trailer, these are normal coolant temps. Even 230 isnt weird but kind of the high mark for staying in control of temps.
     
  6. Clb

    Clb Another old truck Supporting Member

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    True
    You boys searchin this....
    I was chasing down strokes and class 8 trucks..
    Went past a carnival crew fer 3 days 1 burnt to the ground...
    Idi still going.
    -300 deg on a real gauge is ok, egt is key.
    Search my posts
     

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