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Old 08-24-2014, 09:55 AM   #1
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Default Ecoboost turbo temp

I was curios, since the turbos on the Ecoboost f150 are oil and liquid cooled, if they get to hot would the coolant temp gauge rise? I was just wondering about this the other day when I was towing my camper. I have no idea what temp they are at and was wondering if I could damage them or if the truck would tell me before that happend.
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Old 08-24-2014, 02:13 PM   #2
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1. The coolant will go back into the engine and through the radiator just like the rest of the coolant. I've been working on and driving turbo vehicles for 15 years and have never seen coolant temps rise because of a turbo issue.

2. The turbos on these truck are standard journal bearing turbos. They are not ball bearing turbos. Journal bearing turbos can be run with oil only. I would certainly not advise anyone to do this, but journal bearing turbos can be run without the coolant lines at all.

3. The coolant is not there to cool the turbos as much as it is to cool the oil in the turbos after you turn the truck off. The vaccuum system in the truck allows the coolant to continue to flow after shutdown ensuring that the oil will not "cook" or "coke" on the bearings and seals in the turbos. When you shut the truck off and oil stops flowing, the oil can over heat and cook right there and can cause premature wear and failure of turbo internal parts. The solution to that is have a turbo that has coolant jackets in it or have a turbo timer which keeps the vehicle running after you turn it off and take the key out.

Bottom line, all turbos are designed to run under EXTREME amounts of heat. The coolant is not there to cool it as much as it is to ensure the oil stays flowing and doesn't heat up too much.
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Old 08-24-2014, 02:52 PM   #3
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Have you seen the pics of the EcoBoost racing engine being run on the dyno? THOSE will scare you. The exhausts and turbos are so red hot they are almost transparent:

https://images.search.yahoo.com/imag...LxZJ&fr=mcafee


I too have wondered about the turbos after pulling my 28 foot TT up a mountain pass, as you know they are under full or near full boost the entire time.
The one thing I would not do is pull over and turn off the truck right at the top of the hill, unless I let it idle for a while before doing so. While this is probably not necessary, it is peace of mind for me.
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Last edited by sterlingone; 08-24-2014 at 02:55 PM.
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Old 08-24-2014, 03:58 PM   #4
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When U remove direct lighting the exhaust parts glo more. They are just as hot in direct lighting but U don't see it. Of course cooler denser air creates more power so they will get even hotter than. They won't melt unless there is a malf of major proportions.
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Old 08-26-2014, 07:14 PM   #5
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Thanks for the info guys, good reading. I guess my question is if I could over heat these turbos would the truck shut the power down or let you know by one of the gauges. I am use to diesels and know with a programmer or even stock you can get the turbo hot enough to damage and never know till its to late unless you have a pyrometer.
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Old 08-26-2014, 07:15 PM   #6
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When I am towing my camper I watch my boost gauge and can tell the turbos are working really hard.
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Old 08-26-2014, 09:28 PM   #7
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If the coolants gets too hot, it will drop to limp mode and not allow any damage. Some have experienced it going up mountains with heavy loads.
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