How to reduce too high Cylinder Head Temperature on race track?

Discussion in 'V8 5.0L Engine / Mods: Bolt-ons, Exhaust, Tuning' started by audioslave, Aug 28, 2019.

  1. Nuked

    Nuked Well-Known Member

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    When you install the 170 thermostat you will lose some coolant. Just top it back off with distilled water as said above. Check it after full to make sure it is good to a minimum temperature for your climate. Tune can be adjusted to better maximize the lower temp thermostat as well.
     
  2. Burkey

    Burkey Well-Known Member

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    Euro spec cars run the retarded lower grille like we get in Australia right? Eg. The less vented version.
    Maybe get rid of that for a start, get some air into the engine bay.
    As other have said, pull the rubber strip off the base of the hood too.
     
  3. 3star2nr

    3star2nr Well-Known Member

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    I'm actually surprised the engines overheating and not the rear diff...

    These cars really are just high performance street cars. When you start driving them like a man they need some help.
     
  4. BmacIL

    BmacIL Enginerd

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    It's not. It's an EU GT, which gets the PP1 but does not have the center gauges and gets a 3.55 torsen instead of 3.73 when had with the manual.
     
  5. BigBlue

    BigBlue Well-Known Member

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    Could also be the cat overtemp protection combined with cyl head temps.
     
  6. BmacIL

    BmacIL Enginerd

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    I am still leaning towards air in the cooling system.
     
  7. Flyhalf

    Flyhalf Well-Known Member

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    I'm installing and testing a water cool spray on my 2018 gt coolers and radiator.
    The car does overheats.
    I regularly track my car.
    I'll keep you posted on results.
    First tests seem encourage. Unfortunately i can't upload videos here. Screenshot_2019-09-28-18-23-14.png
     
  8. Flyhalf

    Flyhalf Well-Known Member

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    This on the oil cooler 20190924_175411.jpg
     
  9. Cobra Jet

    Cobra Jet Well-Known Member

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    OP, just an FYI - I know yours is a 2018, but the 2019 F150 and Mustang 5.0’s had issues with CHT sensors prematurely failing.

    See this link for the TSB I had posted quite a bit ago:

    https://www.mustang6g.com/forums/threads/tsb-19-2049-cht-mil-dtc’s-p1289-or-p017d.120216/

    It could be something as simple that your CHT is failing and creating a situation where it looks like the temp is excessive “too soon”. It’s always best to be cautious as you are, but just wanted to pass along the TSB info so you can check to see if replacing the CHT helps.
     
  10. AZ18yote

    AZ18yote Well-Known Member

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    Is e85 an option where you are? Should help run cooler.
     
  11. EFI

    EFI Well-Known Member

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    Big ass radiator, big ass oil cooler, open grill, hood vents.

    That should keep you in the low 200s all day long.
     
  12. CrashOverride

    CrashOverride Well-Known Member

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    Unless the 18+ are different, I am fairly positive the oil temps are inferred, so whatever cooling mods you do to affect the oil temperatures, won't be reflected properly on the oil temp "gauge". I don't think a lower temp thermostat will do much of anything, you will be above the normal opening temp a few turns into the track and stay there the entire time. A better fan won't work in this case either. You simply need to move more air across the radiator and exhaust more heat from the engine compartment. I would get a bigger and more efficient radiator, make sure to duct the air into the radiator and not allow it to bypass it. Also, you may want to vent your hood so the air can be sucked out. To do it properly, you would need to know where the low pressure zone is on the hood to exhaust the air. You could also try to rig up brake cooler ductwork because the heat from your rotors isn't going to help the underhood temps.

    Oh how I am jealous that you can go to the ring. I'm with the others though, that the dice have nowhere on a track. There shouldn't be anything in the car but you, and you should be wearing a helmet. If for nothing else than to make sure that you don't get distracted and run into someone else who is running all of the safety gear. On the flip side ++ for your Fraulein to be willing to macht schnell!

    Meine deutsch ist sheiss. I had 2 years of deutsch instruction over 30 years ago, and I can no longer even form comprehensible sentences :frown:

    You may also want to look into meth injection, it does have a cooling effect associated with it. Just leave your tune as is though, don't advance the timing because of the meth, just enjoy the added cooling because of it. Props for driving a US pony car over there. I can't imagine how expensive it would be with taxes and the inherent fuel consumption/engine size costs associated with owning one.
     
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