Turbo Temp

[ToplessTN]

Reading through the cooldown thread got me to wondering about turbo inlet and outlet temps.

I have a 22 JLURD with the Banks iDash Guage. I have it set to monitor (among other things) the turbo inlet and outlet temp.

While driving in Utah and Colorado a few weeks ago, it wasn't uncommon to see inlet temps in the 1200s, even into the 1300s occasionally. These were all at altitude, so I'm sure the engine was working harder, but the coolant and oil temps stayed normal.

How hot is too hot for the turbo?

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[ChuckQue]

Back off on your RPM’s and keep them under 2k as best you can. That should keep your turbo temps under 1200*.

 

[Deleted member 59498]

Not sure what ours would be at the too hot but I know some run into 1700f under load.

 

[SargeDiesel]

Turbos can easily reach those temperatures... with that said I don't know what the temp range is for the JLURD.

I just purchased a Scangauge III for my JTRD, it will be interesting to see what the temps are.

Did you notice a change in your JL's performance ? Or just curious about temps ?

 

[JLeco2022]

read that manual that came with your jeep. it says 1500F and tells you how long to idle after a hard drive. I swear people don't read shit anymore

 

[ToplessTN]

Turbos can easily reach those temperatures... with that said I don't know what the temp range is for the JLURD.

I just purchased a Scangauge III for my JTRD, it will be interesting to see what the temps are.

Did you notice a change in your JL's performance ? Or just curious about temps ?

There wasn’t a change in performance, just curious about temps.

 

[Deleted member 59498]

read that manual that came with your jeep. it says 1500F and tells you how long to idle after a hard drive. I swear people don't read shit anymore

Mine doesn't mention 1500 degrees, which even if it did since they didn't give us a gauge to show that temp its all moot.

 

[JLeco2022]

Mine doesn't mention 1500 degrees, which even if it did since they didn't give us a gauge to show that temp its all moot.

odd the 2022 manual has it, it was the first thing i looked up after i bought it, the second thing was a banks gauge to monitor it. I've been around enough turbo diesels in the military to know its something to watch. people can say well they gave us no way to watch it, and thats fine, but if it breaks when you need it, i guess blame jeep

 

[JLeco2022]

this is i believe the part number for all 3.0 eco diesel jeep turbos, you can take the part number and look up a spec sheet which if not in your manual will have all said information for care on the turbo.
Turbocharger - Mopar (68602174AA)

 

[Ratbert]

this is i believe the part number for all 3.0 eco diesel jeep turbos, you can take the part number and look up a spec sheet which if not in your manual will have all said information for care on the turbo.
Turbocharger - Mopar (68602174AA)

You apparently found the spec sheet and copied that text from it. Why didn't you just copy the link instead?

 

[Kleiss1]

My diesel hits 1300:on a long pull out of Phoenix.

 

[SargeDiesel]

read that manual that came with your jeep. it says 1500F and tells you how long to idle after a hard drive. I swear people don't read shit anymore

People dont have much tact anymore either...
My mileage may vary because I have a JTRD, but I have read through (not study) my manual several times and cannot recall coming across the turbo temp.
Since people generally come to forums like this seeking knowledge... IMO, providing the page number/section where you found the information would have been more helpful.
With that information,
I'm sure they would read the manual... win - win... they get the info and you get the comfort of knowing that they read the manual (atleast a portion of).

 

[Deleted member 59498]

There is no turbo temp in JL 2022 3.0 manual. Only the recommendation for idle time after certain activities that most of us have already read.

As I said earlier what is the point when there is no indicator for temp.

So reading the manual theory is incorrect.

 

[SargeDiesel]

There is no turbo temp in JL 2022 3.0 manual. Only the recommendation for idle time after certain activities that most of us have already read.

As I said earlier what is the point when there is no indicator for temp.

So reading the manual theory is incorrect.

I went ahead and purchased a Scangauge III , I can program it for pre/post turbo temps and alot of other important information for the diesel... I will probably try to install it within the next couple days.
After an initial learning curve, with both programming and reading/interpreting the gauge, it should be really useful.

 

[ALeeL]

If by turbo temps, you are referring to EGT's or exhaust gas temperatures, it depends on where the pyrometer is located. If it is before the turbo on the manifold(which is the best location) then 1,200F is sustainable while towing. If this is post turbo, then it might be getting to the point of being too hot. Post turbo EGTs are generally 100-300F cooler than pre turbo EGTs. When the turbine isn't spinning that much, then the difference is closer to 300F, but at load while spinning fast it is closer to the 100F difference.

While it is still a safe temp, you should not reach over 1,200F unless you towing or pushing the engine hard for an extended period of time. A boost leak, being in a DPF regen, or a clogged air filter will also cause them to spike under normal driving conditions. Basically, the major cause of high EGTs is not having enough air for the amount of fuel/power being requested by your foot and you either need to add more air or decrease fuel to bring them down.

If you see them start to climb, then you have two options. First, downshift to a lower gear to get rpms higher. The faster rate of the pistons moving up and down will move air through the engine more quickly and bring them down. If this doesn't work, then you will have to slow down, although I would wager that the engine will derate cutting fuel before it gets to the point of causing damage.

If you want to read more about EGTs, here is a good article gram Banks.

WHY EGT IS IMPORTANT

While high EGTs can damage the turbo, the greater damage would be internal. High EGTs means even higher combustions temps which can melt pistons and cause other internal issues making the few thousand you spend on a turbo seem trivial.

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