Diesel cooling options and ideas

[av8or]

I would hate to admit how much sleep I lost over this last night. It just doesn't make sense to me. Has something changed on the 2022 or somewhere in between?

Here is the thread where we all discussed and came to the realization.

https://www.jeepgladiatorforum.com/...illar-mount-not-compatible-with-diesel.49052/

Edit:

Looks like the part for the Mojave also lists working for the 392 and the diesel, but not the gas. I wonder which one is really right since your KC brackets fit?

https://store.mopar.com/oem-parts/mopar-cowl-side-trim-panel-right-6nt08tzzaa?c=Zz1ib2R5LXNoZWV0LW1ldGFsLWV4Y2VwdC1kb29ycyZzPWNvd2wtYW5kLWRhc2gtcGFuZWwmbD01Jm49QXNzZW1ibGllcyBQYWdlJmE9amVlcCZvPWdsYWRpYXRvciZ5PTIwMjEmdD1tb2phdmUmZT0zLTZsLXY2LWdhcw==

they might just be saying the diesel driven of those models as well as gas, since diesel is in most of the model line but the mojave/392/4xe all have the different cowls but all the rest are the same regardless of drive train

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[Escape.idiocracy]

i see that they offer a new option ( tee fiting)

• Owners of 2020-Newer models now have the option to select the tee fitting pressure port, which gains access to the oil pressure supply through your vehicle's oil pressure sensor.

I was going through their instructions for the Dodge Ram (nothing on the Jeep-same motor so same applies).

I don’t see anything in place that really regulates the volume of oil that pass’ through their bypass filter setup (when using the t fitting).

Without seeing a diagram I can only comment on speculation. However, if installing this setup utilizing the T fitting, and installing a cooler along with the T- what keeps the oil distribution system in check?

Any engineers on the forum?

Fluid flow and pressure. How does it react when met with resistance. This system allows for flow through the factory oil filter, but in addition T’s the oil system at the oil pressure sensor location to feed a full flow filter, and then dump back into the motor via oil fill cap.

I’m assuming the bypass filter (full flow) is more restrictive, and there for by design allowing oil to push through the factory filter.
However, with the resistance values unknown this would leave the quantity of oil passing through factory vs full flow unknown.

There are obviously folks out there running these setups with success.

However my thoughts were to duplicate the design (utilize a T ) and install an oil cooler. Though with zero resistance with just a cooler, I wouldn’t do this for fear of starving the rest of the system.

 

[domingjm]

I have no foam, no skids, opened vents and added rams in place of the factory Rubi vents, snorkel to pull air from outside the engine compartment, added an oil cooler using insane diesel's cap, vented inner fenders, and I'll still get to 255 oil temps and 250 engine temps when I run it above 2600 Rpms when towing. In my case that's 65mph towing a 4500lb trailer since I'm on 40" tires on 4.88s.

But has all of that decreased those temperatures relative to what they previously were? And have you had derating issues before or since?

 

[ZoneArc]

But has all of that decreased those temperatures relative to what they previously were? And have you had derating issues before or since?

I was hitting 265+ and derates before more often. Now I can hold 65mph with a trailer and sit around 245 oil temps all day long. The bypass setup with a cooler is working for me.
If I was willing to drop another $2500 I could regear from my 4.88 to 4.10s and likely do 75mph with the same temps.

 

[jsalbre]

I would hate to admit how much sleep I lost over this last night. It just doesn't make sense to me. Has something changed on the 2022 or somewhere in between?

Here is the thread where we all discussed and came to the realization.

https://www.jeepgladiatorforum.com/...illar-mount-not-compatible-with-diesel.49052/

Edit:

Looks like the part for the Mojave also lists working for the 392 and the diesel, but not the gas. I wonder which one is really right since your KC brackets fit?

https://store.mopar.com/oem-parts/mopar-cowl-side-trim-panel-right-6nt08tzzaa?c=Zz1ib2R5LXNoZWV0LW1ldGFsLWV4Y2VwdC1kb29ycyZzPWNvd2wtYW5kLWRhc2gtcGFuZWwmbD01Jm49QXNzZW1ibGllcyBQYWdlJmE9amVlcCZvPWdsYWRpYXRvciZ5PTIwMjEmdD1tb2phdmUmZT0zLTZsLXY2LWdhcw==

The export (non-US) diesel uses the Mojave/392 hood and cowls. That's why you're seeing diesel listed on some of those parts. The Mojave/392/export diesel cowl comes several inches higher up to the windshield than the other models. Everything else is the same, except for the 4xe that has a charging port on the driver's side cowl.

 

[Jefe1018]

The export (non-US) diesel uses the Mojave/392 hood and cowls. That's why you're seeing diesel listed on some of those parts. The Mojave/392/export diesel cowl comes several inches higher up to the windshield than the other models. Everything else is the same, except for the 4xe that has a charging port on the driver's side cowl.

I would buy that but when you paid that with the fact that there is a diesel and Mojave specific cowl light mount it is just doesn’t make sense.

 

[@californiajeeping]

Today in 101 degree temps doing 85-90 up some heavy hills with my derringer set to stock….above 240 oil temp it seems to not let the turbo spool up all the way. With my KN intake I can hear/feel a shudder that sounds like the VGT changing. Boost goes from 29-30psi down to around 20psi. I hit 255 with no derate but man that is really high oil temps.

 

[Escape.idiocracy]

Looks like bullet proof diesel is still testing a better radiator and not perusing an oil cooling option.

 

[@californiajeeping]

I am on the list. I for sure will be getting one. The motor cuts boost power using the VGT around 240 degrees FYI. Youll be down 10 psi.

 

[Little diesel]

I've had mine derate on moderate hills in Texas when it's above 90f. https://www.jeepgladiatorforum.com/...latform-wish-there-was-a-return-policy.46233/

Trick is to get off the turbo every chance you get on the hills use the gravity to your advantag. I changed to 4:56 and pulled 8700lbs up and down few hills for short trip and no issues at all. West Michigan hills are pretty dang good hills and adverage elevation is 900, so I don’t know about the high elevation and hills with longer haul. But I am still wanting to get rid of heat lol

 

[steelponycowboy]

Trick is to get off the turbo every chance you get on the hills use the gravity to your advantag. I changed to 4:56 and pulled 8700lbs up and down few hills for short trip and no issues at all. West Michigan hills are pretty dang good hills and adverage elevation is 900, so I don’t know about the high elevation and hills with longer haul. But I am still wanting to get rid of heat lol

We deal with 4000, 6000, 8000 and higher elevations out west here. I don't have issues driving those baby hills on the east coast.

 

[mrmo]

Very much looking forward to seeing your results. One thing, don't you mean the slots are wider, not narrower in the Sport and black grill options? Seems like the slats between the slots are narrower.





Interesting. I wonder how scientific that person's testing was? I would have thought you want to be pulling air up and out of the under-hood area, vs. forcing air in. But, results are results...



It looks like you're right about the radiators being the same. For the 2.0T I see a Mopar radiator part number 68314786AA, for the 3.6 gas I see several part numbers (68272749AC, 68272750AC, 68314786AA) though obviously one DOES match the 2.0T part, and finally the EcoDiesel I see two part numbers (the same 68314786AA and 68263398AF). So, it looks like at least the 68314786AA number is common across all 3, so I would *expect* dimensions, mounting systems, and inlet/outlets to be the same for all 3 engines. As such, you're totally right that Cold Case has this radiator: https://www.coldcaseradiators.com/product/18-20-jeep-wrangler-jl-aluminum-performance-radiator

It says 2018-2020 models, Im assuming the rad stayed the same up through the 2022 models. I would be interested myself. Look forward to your results posted up

 

[@californiajeeping]

It says 2018-2020 models, Im assuming the rad stayed the same up through the 2022 models. I would be interested myself. Look forward to your results posted up

I think with this radiator if you went with a lower temprature thermostat and programming that would lower your overall operating temps and the starting point of the oil temprature spike will be lower buying us time?

Im concerned with the paralell setup off the factor housing oil ports....your cooling oil through a cooler then its getting directly mixed with the hot oil that is going through the factory cooler....what good will that do? We determined the factory cooler can only keep it down around 250-260. So why are we cooling to 190-200 and then mixing it with 250 degree oil?

Seems like that is not the way to go.....

 

[mrmo]

Need to bypass the coolant to oil filter, either a plate or plug the coolant side

 

[dcmdon]

Im concerned with the paralell setup off the factor housing oil ports....your cooling oil through a cooler then its getting directly mixed with the hot oil that is going through the factory cooler....

what good will that do? We determined the factory cooler can only keep it down around 250-260. So why are we cooling to 190-200 and then mixing it with 250 degree oil?

Seems like that is not the way to go.....

It will do a lot. The oil cooled from the bypass cooler mixes with the warmer oil from the factory cooler and the temp averages based on the volume flowing through each cooler.

Further, since there is less flow through the factory cooler, the oil is in teh cooler for longer and has more chance to cool down.

In fact, its nearly as good as running all the oil through the extra cooler. Because the oil running through the extra cooler is moving slower it too gets cooled more than if it were full flow.

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