Bypassing trans cooler in radiator - JeepForum.com
 
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post #1 of 8 Old 06-15-2015, 07:07 PM Thread Starter
Over300kZJ
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Bypassing trans cooler in radiator

After hours of research I've decided to bypass my trans cooler in the radiator. The reason is ever since I've installed my aftermarket aluminum radiator I've had trans fluid leak from the lines coming in and out of the rad. Replaced hoses and teflon taped threads w/ no luck. I've purchased a tru cool bypass valve that will let the trans fluid warm properly during the ny winters then send fluid to the cooler once it hits 180*. I'm wondering if my aftermarket trans cooler is large enough to handle cooling during lower speeds on the trail. Here's a pic of the trans cooler installed. Any input will be greatly appreciated.

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post #2 of 8 Old 06-15-2015, 07:08 PM
kg6mov
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Nice pic.

If it's larger than the stock aux cooler you should be fine.


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post #3 of 8 Old 06-16-2015, 04:12 AM
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What gross vehicle weight is it rated for? Size isn't always the determining factor with aftermarket coolers. Some are just more efficient but smaller and they usually cost more. It should tell you what it's rated for on the box or if you know the model number, online.
I used a fin and tube once and although it worked ok, it was very fragile and easily bent to hell. You might want to paint it with a light coat of black as well. It will blend in better.

The second time around I got this plate and fin cooler and it worked great. It's rated for 30,000 gross vehicle weight. Never had a problem keeping the trans cool on it's own. I had a temp gauge installed in the hot fluid line so I knew what was going on. It was a tight fit but I got it to work.
http://www.amazon.com/Hayden-Automot...n+30%2C000+gvw
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post #4 of 8 Old 06-18-2015, 07:53 PM Thread Starter
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Originally Posted by PolkaPower View Post
What gross vehicle weight is it rated for? Size isn't always the determining factor with aftermarket coolers. Some are just more efficient but smaller and they usually cost more. It should tell you what it's rated for on the box or if you know the model number, online.
I used a fin and tube once and although it worked ok, it was very fragile and easily bent to hell. You might want to paint it with a light coat of black as well. It will blend in better.
I believe the one I have is rated 18,000 gvw. I've had it for awhile and it's still in great shape. When I bought it I didn't plan on using it as a stand alone cooler so I didn't pay attention to the GVW rating. Do you think this will be good enough? I don't plan on towing but I do live in the mountains so climbing hills is an everyday occurance.. If need be I'll upgrade to the better trans cooler because it's still a heck of a lot easier/cheaper than a new radiator.

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post #5 of 8 Old 06-19-2015, 12:43 AM
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Quote:
Originally Posted by Over300kZJ View Post

I believe the one I have is rated 18,000 gvw. I've had it for awhile and it's still in great shape. When I bought it I didn't plan on using it as a stand alone cooler so I didn't pay attention to the GVW rating. Do you think this will be good enough? I don't plan on towing but I do live in the mountains so climbing hills is an everyday occurance.. If need be I'll upgrade to the better trans cooler because it's still a heck of a lot easier/cheaper than a new radiator.
I'd get a higher gvw just to be sure. Without a temp gauge you won't be able to tell if it is enough. Before I got the 30,000 gvw, I had a smaller one and it was not adequate by itself.
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post #6 of 8 Old 06-21-2015, 04:21 PM
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I was looking at putting the standalone cooler on my '98. I destroyed the upper oil line removing it from the radiator yesterday, oooppsie, and finding a replacement looks next to impossible. Did you just run the lines from the feed and return pipes around the rad and condenser then mount to the struts behind the grill?
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post #7 of 8 Old 06-21-2015, 04:23 PM
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Quote:
Originally Posted by greenear View Post
I was looking at putting the standalone cooler on my '98. I destroyed the upper oil line removing it from the radiator yesterday, oooppsie, and finding a replacement looks next to impossible. Did you just run the lines from the feed and return pipes around the rad and condenser then mount to the struts behind the grill?
Yes. Bottom line is feed, top is return.
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post #8 of 8 Old 06-24-2015, 09:06 PM Thread Starter
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Quote:
Originally Posted by PolkaPower View Post
I'd get a higher gvw just to be sure. Without a temp gauge you won't be able to tell if it is enough. Before I got the 30,000 gvw, I had a smaller one and it was not adequate by itself.
I'll be ordering a 30k gvw cooler soon. Thanks for the advice.

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