Diesel cooling options and ideas

[OrangeCJ]

Just had a quick, maybe dumb question, that may have been posted earlier...

I am adding an external cooler, similar to the BPD/Primer Gray setup... Basically you just pull the line off the oil cooler, connect it to the new external radiator and then route the output back to the cooler... correct? I read the instructions from BPD, but in my mind, I am missing something.

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[CrazyCooter]

Just had a quick, maybe dumb question, that may have been posted earlier...

I am adding an external cooler, similar to the BPD/Primer Gray setup... Basically you just pull the line off the oil cooler, connect it to the new external radiator and then route the output back to the cooler... correct? I read the instructions from BPD, but in my mind, I am missing something.

Yes, that's it. pre/post (can't remember which line goes through the aux cooler first) cool water that is superheated from transferring heat from the oil.

 

[OrangeCJ]

So another question for all you smart forum guys and gals...

Because of my bumper I have a bit more space, and I was thinking about going with this radiator as opposed to the inverter cooler.

https://www.amazon.com/dp/B0DK8RWFZF?ref=ppx_yo2ov_dt_b_fed_asin_title

The fitting size on the radiator is 7/8" which means I will have to step down the hose to match the 5/8 hose in the vehicle... Any thought on adverse affects by changing the inlet / outlet size?

This radiator seems to have a lot more surface area, and is totally aluminum, and fits the cutout in my skidplate almost perfectly, so there are some upsides... just want to make sure there are no downsides.

 

[@californiajeeping]

The factory oil cooler has coolant flowing through it. No matter what you do that becomes a heater once coolant temps go up to 225-230. You could have a giant oil cooler in the bed with dual fans and it will struggle to overcome this interconnect....

Lowering coolant temps to 195-210 will drop oil temps as your engines cooler all around.

I can fully control my temps by simply engaging the tazers cooldown function. Its been working A+

 

[VA6489]

Mat would be willing to work with someone near him (Campbelltown, PA). The Jeep folks would need to figure out the proper sized oil cooler. He likes the filter holders and oil coolers from Improved Racing.

I am in King GEorge VA, Very interested in tryign this out on my JTRD. I have a cooler identified as well as a remote filter. Will be intouch soon.

 

[rubicon4wheeler]

I am in King GEorge VA, Very interested in tryign this out on my JTRD. I have a cooler identified as well as a remote filter. Will be intouch soon.

Please share which cooler and filter setup you've found will actually fit in our Jeeps!

 

[VA6489]

Please share which cooler and filter setup you've found will actually fit in our Jeeps!

Looking At a 16 row oil cooler to install infront of the radatior
https://www.improvedracing.com/setrab-16-row-series-6-oil-cooler.html#additional

remote oil filter looking at this one:
https://www.improvedracing.com/remo...oil-filter-mount-with-thermostat-env-171.html

Next will be looking for a filter moutning location.

 

[VA6489]

First on the list will be a aux fuel tank with a gravity feed. The design will replace the sheet metal in the front bulkhead of the bed adding 16-17 gallons using minimal bed space.

 

[rubicon4wheeler]

Looking At a 16 row oil cooler to install infront of the radatior
https://www.improvedracing.com/setrab-16-row-series-6-oil-cooler.html#additional

remote oil filter looking at this one:
https://www.improvedracing.com/remo...oil-filter-mount-with-thermostat-env-171.html

Next will be looking for a filter moutning location.

Those are quality parts. Finding a filter mounting location will be the hard part.

 

[rubicon4wheeler]

Looking At a 16 row oil cooler to install infront of the radatior
https://www.improvedracing.com/setrab-16-row-series-6-oil-cooler.html#additional

I don't particularly like the idea of adding another heat exchanger in front of the intercooler and radiator where it just dumps its heat right back into the system.

 

[VA6489]

I don't particularly like the idea of adding another heat exchanger in front of the intercooler and radiator where it just dumps its heat right back into the system.

With my rig, I don't have Water cooling issues, just oil cooling. Looking at a CFS race radiator as part of the upgrade. The only other option is it install the cooler under the front bumper behind the lower skid. This limits size to 4 inches tall and 21 wide. I am not sure that is enough surface area to cool the oil before returning to the engine.

 

[rubicon4wheeler]

With my rig, I don't have Water cooling issues, just oil cooling. Looking at a CFS race radiator as part of the upgrade. The only other option is it install the cooler under the front bumper behind the lower skid. This limits size to 4 inches tall and 21 wide. I am not sure that is enough surface area to cool the oil before returning to the engine.

I have the CSF radiator. Cooling the water isn't an issue, but the intercooler won't like the oil's heat flowing into it.

 

[suroot]

I built a completely separate/closed oil cooling loop that pulls oil from the pan, runs it through an external CBR cooler/fan setup mounted in the bed area, and then returns it back to the oil pan. Flow is roughly 2–3 GPM. This is not tied into the factory coolant/oil cooler circuit. It is a separate oil loop and added about 3 quarts of total oil capacity.

The tank on the right is not related to the cooling system. It is a 1-gallon tank that feeds my heater for camping when I am not pulling the trailer.

Before doing this, I would see oil temps climb to 275°F+ towing my roughly 3,000 lb trailer up long grades. With this setup running, the highest I’ve seen is about 235°F under the same kind of towing conditions. It knocked roughly 40°F off my worst-case oil temps while towing.

I wanted a setup that lets me tow at a reasonable speed without watching oil temps run away. The truck is used for rock crawling and pulling an off-road trailer only.

-B

 

[rubicon4wheeler]

I built a completely separate/closed oil cooling loop that pulls oil from the pan, runs it through an external CBR cooler/fan setup mounted in the bed area, and then returns it back to the oil pan. Flow is roughly 2–3 GPM. This is not tied into the factory coolant/oil cooler circuit. It is a separate oil loop and added about 3 quarts of total oil capacity.

How did you tap into the oil system? I've considered going straight into the oil pan with -10AN fittings and using a Tilton oil pump to circulate oil through a cooler completely separately from the engine's oil circuit.

 

[rharr]

I built a completely separate/closed oil cooling loop that pulls oil from the pan, runs it through an external CBR cooler/fan setup mounted in the bed area, and then returns it back to the oil pan. Flow is roughly 2–3 GPM. This is not tied into the factory coolant/oil cooler circuit. It is a separate oil loop and added about 3 quarts of total oil capacity.

The tank on the right is not related to the cooling system. It is a 1-gallon tank that feeds my heater for camping when I am not pulling the trailer.

Before doing this, I would see oil temps climb to 275°F+ towing my roughly 3,000 lb trailer up long grades. With this setup running, the highest I’ve seen is about 235°F under the same kind of towing conditions. It knocked roughly 40°F off my worst-case oil temps while towing.

I wanted a setup that lets me tow at a reasonable speed without watching oil temps run away. The truck is used for rock crawling and pulling an off-road trailer only.

-B

I like the idea of a dedicated oil cooler for a oil. I am glad your solution works and keeps the oil temps down.

I do want to ask about EGT's; oil temp and EGT's are proportional to added work/load. My concern is you knocked the oil temps down, but are now cooking the turbo and down tubes running sustained periods of high boost. Have you monitored EGT's and whats the highest seen for how long?

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