Re-purpose the stock trans cooler? - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 12 Old 02-15-2017, 08:13 AM Thread Starter
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Re-purpose the stock trans cooler?

I want to utilize the stock trans cooler that is on the bottom of the stock A/C condenser to cool power steering fluid instead of trans fluid. I have a separate cooler for trans fluid. I also have adapters that convert the lines coming out of the stock trans cooler to -6an. I want to come off of the return side of the power steering and run it into the cooler and then back out to the reservoir.

What is the pressure on the return side look like on a power steering setup? Any one see any issue with doing this?
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post #2 of 12 Old 02-15-2017, 08:34 AM
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The pressure is low, only what it takes to push the fluid through the lines (can't be any higher, it goes to a reservoir at atmospheric pressure).

Probably at most, a few 10's of PSI.

I don't see any reason you couldn't do this. Although, the transmission cooler is way overkill for a power steering setup. I have a little cooler about 3" x 12" for power steering with hydro assist that I bolted in front of all the other radiators, and it's never even beyond warm to the touch.

Whatever you do, just make sure you don't end up making your transmission cooling worse than stock. That'd be a really bad outcome.
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post #3 of 12 Old 02-15-2017, 08:50 AM
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I was under the assumption that power steering temps are usually lower than 180 so reusing the factory trans cooler would in essence heat up the power steering fluid no?


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post #4 of 12 Old 02-15-2017, 09:11 AM
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Quote:
Originally Posted by ALASHA View Post
I was under the assumption that power steering temps are usually lower than 180 so reusing the factory trans cooler would in essence heat up the power steering fluid no?
The transmission cooler is external of the engine coolant radiator. The water temperature would have no effect on the transmission fluid temperature, if that's what you are thinking.
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post #5 of 12 Old 02-15-2017, 09:31 AM Thread Starter
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Quote:
Originally Posted by christensent View Post
The pressure is low, only what it takes to push the fluid through the lines (can't be any higher, it goes to a reservoir at atmospheric pressure).

Probably at most, a few 10's of PSI.

I don't see any reason you couldn't do this. Although, the transmission cooler is way overkill for a power steering setup. I have a little cooler about 3" x 12" for power steering with hydro assist that I bolted in front of all the other radiators, and it's never even beyond warm to the touch.

Whatever you do, just make sure you don't end up making your transmission cooling worse than stock. That'd be a really bad outcome.
I've got one hell of a cooler for my 6l80 going in. And yes it may be overkill but its already there, I cant remove it, and I already had the adapter fittings from another project.

The real idea is when I get hydro in the next couple of months I wonder if I can do the same thing with that setup?
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post #6 of 12 Old 02-15-2017, 12:17 PM
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I have been running mine for a year like this with a couple barbed fittings.
no problem
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post #7 of 12 Old 02-15-2017, 12:48 PM
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Use my factory trans cooler for power steering as well.
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post #8 of 12 Old 02-15-2017, 12:58 PM Thread Starter
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Guess its a done deal then. Glad to hear others have done this successfully already.
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post #9 of 12 Old 02-15-2017, 03:02 PM
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Quote:
Originally Posted by ronjenx View Post
The transmission cooler is external of the engine coolant radiator. The water temperature would have no effect on the transmission fluid temperature, if that's what you are thinking.
I guess it has changed in subsequent years but on my 08, the trans cooler is inside the radiator hence my original comment.


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post #10 of 12 Old 02-15-2017, 03:21 PM Thread Starter
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Originally Posted by ALASHA View Post
I guess it has changed in subsequent years but on my 08, the trans cooler is inside the radiator hence my original comment.
Sorry but it's not and never has been.
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post #11 of 12 Old 02-16-2017, 02:16 PM
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Quote:
Originally Posted by Dkjeep View Post
Sorry but it's not and never has been.
I stand corrected. My apologies.


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post #12 of 12 Old 02-16-2017, 02:22 PM Thread Starter
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It's all gravy.

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