Ecodiesel power derating as temps rise?

[Samfamaz]

Those are the brackets I made for the cooler

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[Samfamaz]

Oh, I should mention that I filled the lines and cooler with the cooler loose and hanging down to be sure there were no air gaps in the cooler. I started and ran it that way in the lift to test it. It was only at idle temps but the feed side and cooler were pretty warm and the return was cold. That was with no fan.

Pressure gauge reads the same but I don't know where they are reading it at. This setup can't be robbing any more pressure than one of those remote oil filter setups. If your worried about pressure add a pump. It would cool the oil even better that way.

 

[CerOf]

If the extra tubing and external cooler are full with oil, additional oil added for the extra capacity, the pressure should remain the same, no?

This is a fantastic idea and someone/company could easily make a plug and play kit.

10 degrees will definitely prevent the derate. It’s like adding an extra 1”.
Sorry, I went there.

 

[@californiajeeping]

Oh, I should mention that I filled the lines and cooler with the cooler loose and hanging down to be sure there were no air gaps in the cooler. I started and ran it that way in the lift to test it. It was only at idle temps but the feed side and cooler were pretty warm and the return was cold. That was with no fan.

Pressure gauge reads the same but I don't know where they are reading it at. This setup can't be robbing any more pressure than one of those remote oil filter setups. If your worried about pressure add a pump. It would cool the oil even better that way.

Did you TAP the housing or removed the plugs and use existing threads?

 

[@californiajeeping]

This is a 60 row oil cooler. I bet it will help even more.

https://www.pegasusautoracing.com/productdetails.asp?RecID=31798

 

[Rusty PW]

Oh, I should mention that I filled the lines and cooler with the cooler loose and hanging down to be sure there were no air gaps in the cooler. I started and ran it that way in the lift to test it. It was only at idle temps but the feed side and cooler were pretty warm and the return was cold. That was with no fan.

Pressure gauge reads the same but I don't know where they are reading it at. This setup can't be robbing any more pressure than one of those remote oil filter setups. If your worried about pressure add a pump. It would cool the oil even better that way.

What type of fittings and sizes did you use to tap in there?

 

[Samfamaz]

I used existing threads. I don't remember the pitch, it's metric, I probably have it written down somewhere. I had to turn down the fittings, take the corners off the hex, because the two holes are very close together.

I believe the cooler I already have is too big. The flow is not high enough to take advantage of a big cooler. I know if I added a pump I could get better cooling out of it.

When I say 10 degrees it's a solid 10 but it's linear. My oil temps are always within a few degrees of coolant temp. During street or highway driving. Only when I'm really pushing it does the gap widen.

Just for reference.
I've got about a 5" lift. True 38"x13.50 tires. Stock gears and motor.

I tow about a 3500 pound trailer. I havn't towed the trailer much after the cooler add but I have towed it on flat ground on the freeway and there was a solid difference.

Now that I have a gauge where I can see EGTs I'm more concerned about that now. Freeway cruising at 75-80 I'm running 1100. If I put the pedal to the floor and run it up to 90-95 I've seen temps hit 1600. I can only imagine that next time I'm pulling a trailer up a grade I will see the same temps if I'm not careful.

I live in PhoenixAZ. HOT!

 

[M390]

I used existing threads. I don't remember the pitch, it's metric, I probably have it written down somewhere. I had to turn down the fittings, take the corners off the hex, because the two holes are very close together.

I believe the cooler I already have is too big. The flow is not high enough to take advantage of a big cooler. I know if I added a pump I could get better cooling out of it.

When I say 10 degrees it's a solid 10 but it's linear. My oil temps are always within a few degrees of coolant temp. During street or highway driving. Only when I'm really pushing it does the gap widen.

Just for reference.
I've got about a 5" lift. True 38"x13.50 tires. Stock gears and motor.

I tow about a 3500 pound trailer. I havn't towed the trailer much after the cooler add but I have towed it on flat ground on the freeway and there was a solid difference.

Now that I have a gauge where I can see EGTs I'm more concerned about that now. Freeway cruising at 75-80 I'm running 1100. If I put the pedal to the floor and run it up to 90-95 I've seen temps hit 1600. I can only imagine that next time I'm pulling a trailer up a grade I will see the same temps if I'm not careful.

I live in PhoenixAZ. HOT!

I know a lot of folks won’t be agreeable with my gearing choice for tire size here but…
I’m running 4.56’s with 35“ tires. I saw a marked improvement in my EGTs while towing switching from 3.73’s to 4.56’s. I can only assume the extra leverage helps take the load off the turbo a bit. My unloaded fuel mileage stayed exactly the same. Can only imagine the effect is greatly exacerbated with 38” tires and stock gearing.

 

[Escape.idiocracy]

I used existing threads. I don't remember the pitch, it's metric, I probably have it written down somewhere. I had to turn down the fittings, take the corners off the hex, because the two holes are very close together.

I believe the cooler I already have is too big. The flow is not high enough to take advantage of a big cooler. I know if I added a pump I could get better cooling out of it.

When I say 10 degrees it's a solid 10 but it's linear. My oil temps are always within a few degrees of coolant temp. During street or highway driving. Only when I'm really pushing it does the gap widen.

Just for reference.
I've got about a 5" lift. True 38"x13.50 tires. Stock gears and motor.

I tow about a 3500 pound trailer. I havn't towed the trailer much after the cooler add but I have towed it on flat ground on the freeway and there was a solid difference.

Now that I have a gauge where I can see EGTs I'm more concerned about that now. Freeway cruising at 75-80 I'm running 1100. If I put the pedal to the floor and run it up to 90-95 I've seen temps hit 1600. I can only imagine that next time I'm pulling a trailer up a grade I will see the same temps if I'm not careful.

I live in PhoenixAZ. HOT!

Have you considered water injection or water methanol injection?

AFE makes a replacement pipe with a port that would be all too easy to hook into.
https://afepower.com/afe-power-46-20434-b-bladerunner-aluminum-hot-and-cold-charge-pipe-kit-black

 

[Samfamaz]

I have considered meth injection. I work for a turbo company and we sell a lot of those kits.

I took a couple pics on the freeway on my ride home.

 

[rharr]

the I-17 up to flag is where the real fun happens....

 

[M390]

the I-17 up to flag is where the real fun happens....

Definitely where deeper gears would help for multiple reasons.

 

[@californiajeeping]

Have you considered water injection or water methanol injection?

AFE makes a replacement pipe with a port that would be all too easy to hook into.
https://afepower.com/afe-power-46-20434-b-bladerunner-aluminum-hot-and-cold-charge-pipe-kit-black

I have the pipes and a gauge pod, going to be doing water methanol with a second stage that sprays in front of the radiator/intercooler. That’s the easiest cheapest cooling solution I just haven’t decided on what to use for a resevoir yet. The stock one is over agallon but the def fluid would be closer to 3-3.5 and it had a built in level sensor ?

 

[wv_gladiator]

Jeep engineers had to know about the cooling issues with the diesel. Why didn't they just put in a thicker radiator, there's room. Maybe lawyers should get involved for falsifying towing claims.

 

[ShadowsPapa]

If the extra tubing and external cooler are full with oil, additional oil added for the extra capacity, the pressure should remain the same, no?

One of the first rules of hydraulics - pressure is the same. (the other is that pumps create volume, not pressure - pumps do not create pressure)
Interesting tests were done on a dyno a few years ago by a guy building an engine in a competition.
People were sticking to their BS about the rear mains starving for oil, the pressure is too low at the rear of the block and blah blah, so for racing they were adding an extra line in the valley and directing oil from the front of the block where the pump was to the rear of the block where the galleries were that fed the rear bearings.
The guy proved that without that line, the oil pressure was the same in every part of the oil supply - next to the pump where the senders usually were located, and in the very rear oil gallery, end of the line. Many still argued the lines were necessary - but why if the pressure was the same, that means the supply was there, too. Takes volume against a restriction to build pressure. If the volume is there, the pressure will be there.
They could add 50 feet of oil line on these and massive coolers and as long as it wasn't 1/8" line, the pressure would remain constant.

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