• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Trans cooler question

ninnyGTP

ninnyGTP

New member
Alright, as some of you may know, I just recently bought a Hayden cooler for my transmission. I totally bypassed the stock radiator cooler for safety reasons (don't want coolant ruining my trans should the radiator fail)

Well from the drives around town these past few days I was alright with the results. Took a little longer to heat up, and was always 10* cooler than my coolant (180-190). Today I finally drove it for about an hour and a half to 2 hours. For the most part, the above held true. Then I noticed that it started to creep to 210* while my coolant was dropping to 170*

Keep in mind, it was 110* out today, so not sure what it'll be temp wise in cooler weather, but needless to say I am a bit dissapointed. Here I was looking to improve cooling (normally 180 max with stock cooler) and here i've worsened it.

Now, to my question. Is there anyone else that bypassed the radiator cooler? and if so, did you run a puller or pusher fan, secondary cooler, etc? Don't bother telling me to add the stock cooler back into the loop cause I refuse. Personally had to swap out some friends bad trans' because of a radiator failure
 


Where did you mount the cooler?
On my GTO i bypassed the radiator and stuck the cooler in front of the radiator and saw my trans temps always being cooler.
 
Right in front of the radiator by the airdam

IMG_4828.jpg
 
i have a hayden cooler running by itself from 3EP... i scanned temps one day while scanning for KR on a 100+ degree day my highest temp was 193. keep in mind this was during several WOT runs... it actually got cooler at idle... seems like it would get hotter with no air flow.. then i thought there is alot less movement in trans to compensate for heat difference, it was only like a 5 degree difference. maybe get a bigger cooler?... what fluid u running.. im running dex6
 
Riddle me this, you have the hot side on the top or the bottom? I have it up top, cool side (return line) on bottom
 


That's what I figured, that's how I placed it. I asked since the hot side on the stock cooler is on bottom
 


Just picked up an electric pusher fan that i'm gonna wire to a switch for when it gets up to operating temp i can fire it on to keep them there. Today it got up to 210 so i'm thinking the cooler is faulty
 
thats weird... i got down on mine several times under WOT into top of third and never got up to 200 degrees. are u using dex6?
 
get a b&m trans cooler rad


I run the desert fox kit. it uses a b&m rad, my temps never hit higher than 190 (even beating the piss out of the car on a hot summer day)
 
i got my gtp with a blown motor. but the trans had been rebuilt 31 miles before motor went. anyways while replacing the motor i noticed the trans shop had completely bypassed the stock and added an aftermarket cooler only... i was kinda concerned about it and went down to the trans shop to ask about it and also about thier rebuilds. he said they do that with every trans they rebuild and never had one come back with a problem because of it, and that was good enough for me... they are the biggest, best, and most expensive trans shop in town from what everyone says... and the 3200 dollar reciept i have prooves it. paid 750 for whole car btw(cant stop braging about the deal i got, lol) i dont like how they put the plastic ties through the rad though so i snagged a bigger better one off a truck from pullapart that bolts in that i still need to install. or heck, maybe even run them in series if i can attach the current one better.
 
I had my trans cooler with the stock rad one together...It worked great in our wonderful so cal traffic.
 


Was just reading over the warranty info on my trans since I'm pretty sure it is now toast and thought this was pretty interesting...

IMG_0887.JPG
 
I run two Long double stack 18,000 GVW coolers in my GP completely separate from the radiator and have had zero problems in 100 degree weather. Of course, in those temperatures i have the A/C running and the trans is fine. I only need to have the A/C on if I am running in traffic, not if I am running on the highway since air is moving over the coolers. In cooler weather, it does not matter if the fans are running or not in traffic. I think you probably need a bigger and better (double stack, not the tube and fin,you are running). Running a cooler (install the biggest one you can fit) is the BEST insurance for your transmission. Dopey comments like you are wasting your time running a cooler are exactly that, dopey!

Lastly, if you are completely by passing the radiator, it will not matter how you hook the lines to the cooler.

Hope that helps!
 
You must log in or register to reply here.
Back
Top