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Discussion Starter · #1 ·
I decided to go ahead and install my Derale Hyper-Cool aux trans cooler this past weekend. I got it back in the beginning of the year when I did my 47re swap, but never got around to installing because the factory cooler works pretty good. Anyway, I figured since it was just sitting in the garage, why not. Here is how I went about it.

This pic shows fabbing a bracket on to the rear skid plate cross member using scrap material, compliments of my buddy and cf member muffinman944 :thumbsup:


And another view


Installed and ready for cooler


Cooler mounted


Lines tied into factory lines


Lines secured


Lines attached to cooler


Another view, it is mounted at a 50* angle for maximum clearance and air flow, the fan is setup to pull.


This is setup so that the hot line from the trans goes to the factory cooler up front, then to the aux cooler in the back and then to the trans. I have not even wired the fan up and I have already noticed an average of 20* F drop in overall temp.

I hope this info helps anyone considering installing an aux trans cooler! :thumbsup:
 

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That's a great spot for it. I had the same cooler in my 06 and loved it. When the fan would kick on it would drop temps in a hurry. Especially on those long slow, stuck behind and idiot climbs on the mountain passes. :thumbsup:
 
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This helped me greatly I'm buying one for mine within this week I had no idea where I was gunna mount I love your idea so I'm gunna copy it! I was planning on running the coolers in series like that as well. Where did you get the lines? I know theres a hose power around me but I know I'm gunna pay out the a$$ for some lines from them
 
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Discussion Starter · #8 ·
This helped me greatly I'm buying one for mine within this week I had no idea where I was gunna mount I love your idea so I'm gunna copy it! I was planning on running the coolers in series like that as well. Where did you get the lines? I know theres a hose power around me but I know I'm gunna pay out the a$$ for some lines from them
I got all the stuff from summit to make the lines myself. :thumbsup:
 

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Looks good!!
 
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How loud is it? Can u hear it sitting in traffic? While driving?
 

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Discussion Starter · #11 ·
How loud is it? Can u hear it sitting in traffic? While driving?
As far as on the truck I have not wired it, but when I tested it on the bench it sounded like a regular house fan. I'm sure that I will not hear it inside the cab. When I get it wired I will update this thread along with more temp readings. :thumbsup:
 

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I got all the stuff from summit to make the lines myself. :thumbsup:
Ahh very smart could you post a link on here of what you ordered or pm me? Thanks!
 

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Thanks what size braided lines did you use?
 

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Discussion Starter · #16 ·
I used -8 which is 1/2" inside diameter.

I have also now wired the fan up and I cannot hear it from inside the truck at all. I am still trying to get more data on temps and driving conditions, but I will say it is definitely keeping temps down!
 

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Thanks again gunna be ordering some stuff here soon. Did yours wire up with a thermostat or just to a switch? Ats one with fan cooler and thermostat was about 280 if I'm not mistaking I havnt looked around though I feel it would be cheaper to do a not so big of a name cooler and wire the fan up to a switch with a relay. I feel like I'm just paying more for a name with a ats cooler and it's not hard to turn on a switch vs it doing it itself. all coolers should do about the same correct?
 

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Thanks again gunna be ordering some stuff here soon. Did yours wire up with a thermostat or just to a switch? Ats one with fan cooler and thermostat was about 280 if I'm not mistaking I havnt looked around though I feel it would be cheaper to do a not so big of a name cooler and wire the fan up to a switch with a relay. I feel like I'm just paying more for a name with a ats cooler and it's not hard to turn on a switch vs it doing it itself. all coolers should do about the same correct?
I have a thermo switch but opted not to install it, so I'm running the fan on a regular switch. As for the brand of cooler, I went with Derale because they offer a 25 row cooler in a compact size. :thumbsup:

Now for an update on temps.

Yesterday I did a lot of stop and go driving in traffic, never really getting above 2nd gear and outside air temp was above 100*. It took a long time for the trans temp to reach 170* with the fan off, so that is a plus! I then turned the fan on while it was creeping toward 175* and it started coming down gradually and settled around 170*. Still in the same situation for another 15 min or so, with the fan on it maintained a trans temp of 170* until I was free of traffic. Total distance was about 5 miles and it took almost an hour to travel it! :doh:

Later on I was on the interstate with the same outside temp. Running 75 to 80 mph for about 45 miles with the fan off the trans stayed between 135* and 140* on not so flat TN roads!

Eventually I will do some towing and report my findings, but overall I am happy with this cooler and definitely recommend it. :thumbsup:
 

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Did you ever do any towing with it yet? Any slow curvy switch back roads loaded down with a trailer?
 
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