Opinion: Push or Pull Fan for Transmission Cooler

[psraff]

Hey guys, (and Ladies) What's the general opinion (or based on facts) which would be better for mounting a fan on the external Tranny Cooler? A fan that's mounted on the front and pushes, or on the back and pulls? Does it really matter? I've read regarding other applications, one can be better then the other.... But what about us? Would it really matter?

 

[JayRolla]

Hey guys, (and Ladies) What's the general opinion (or based on facts) which would be better for mounting a fan on the external Tranny Cooler? A fan that's mounted on the front and pushes, or on the back and pulls? Does it really matter? I've read regarding other applications, one can be better then the other.... But what about us? Would it really matter?

Pull or push in computer PC builds are usually pretty close in temps. The best option would be whatever one gives you the freshest cool air and not pulling the engine heat into the fan.

 

[AZPartsGuy]

My plan is to mount the cooler on the top-left portion of the condenser and use a thermo-controlled push fan.

 

[LittleCaesar]

Can I ask why you need one? What are your tranny temps?

 

[jeremyc74]

I would use a puller. The airflow is going to be about the same with either one. The reason I'd choose the puller is it will have some protection from bugs and debris that could otherwise damage it or get stuck to the blades and make it less efficient.

 

[JRZEE2000TR4LTD]

I would think common sense would be a push fan in front so you don't have a fan fighting with the engine fan pulling air through the front. Would there be enough room to mount a pull fan on the back side somewhere?

 

[JayRolla]

Can I ask why you need one? What are your tranny temps?

Once an air to air cooler gets heat soaked it becomes completely useless. Its like not having a cooler at all. This is another reason toyota uses a liquid cooler.

We used water sprayers on our turbo cars to cool the intercoolers. Worked pretty well at getting rid of that heat soak.

 

[Herculean T4R]

My both vehicles ( 2006 Xterra and 1999 4runner) have fans mounted on tranny cooler that are setup as pusher fans. Haven't had any issue with my set up yet.

 

[psraff]

Can I ask why you need one? What are your tranny temps?

Under normal driving conditions, I'm fine. But once I hit the mountain trails, going slow and in 4WD, I see my temps get up to 230* (even with OD off and shifted to lower gears). That's the gauge I watch the most actually. I plan on putting a switch so I can work the fan manually at all times.

Last time out I was doing something new and my truck was sitting, not moving for periods of time over and over (I was cutting limbs and trees out of a trail). So it was getting pretty saturated with heat (just my opinion, no facts to back it up except my temp gauge).

 

[jeremyc74]

I would think common sense would be a push fan in front so you don't have a fan fighting with the engine fan pulling air through the front. Would there be enough room to mount a pull fan on the back side somewhere?

The airflow is going from front to back with either configuration, so you're not fighting with the engine fan either way.

 

[psraff]

I saw several posts where people were using Pro Comp 7" fans from Amazon. Of course, that seller wouldn't ship to AK, so I just ordered a similar one off of eBay. From the pics and details, I can't tell the difference from Pro Comp and this one:

7" inch Universal Slim Fan Push Pull Electric Radiator Cooling 12V Mount Kit | eBay

(though my allergies are KILLING me this morning so I may have missed something while I was running to blow my nose about 40 times!!!!)

 

[psraff]

Once an air to air cooler gets heat soaked it becomes completely useless. Its like not having a cooler at all. This is another reason toyota uses a liquid cooler.

We used water sprayers on our turbo cars to cool the intercoolers. Worked pretty well at getting rid of that heat soak.

I still miss my Water Cooled Celica GT-4!!!!!!!!

 

[JayRolla]

I still miss my Water Cooled Celica GT-4!!!!!!!!

Very fun cars for what they where. AWD turbo Celica, awesome!! Wish they got more popular and toyota sold more. Aftermarket parts hard to find for those bad boys.

 

[psraff]

Very fun cars for what they where. AWD turbo Celica, awesome!! Wish they got more popular and toyota sold more. Aftermarket parts hard to find for those bad boys.

We made our own! LOL Plus they were so de-tuned that they were very easy to go from the stock 7lbs boost to up to 15-17lbs. I'm just proud to this day that I owned one of those cars.... Rod Millen ran all three generations on Pikes Peak and dominated with them. Even when he went to the Tacoma he still used the same engine. Read the Supras over seas would use them for the road course racing.

They were built so strong, frame and body wise. Heavy little cars. Toyota just got out of that type of car too soon. Right after they did, the era of Honda and the "Rice Burners" took over. I put many of them to shame in and around the Seattle area. HEHEHE

I'm glad they were rare in the US. I was very disappointed they never brought the Third Gen to the States (wouldn't pass emissions, I believe....)

I had an '88 GT-4, while my Brother had the MK-III and IV Supra. We had lots of fun!

 

[JayRolla]

We made our own! LOL Plus they were so de-tuned that they were very easy to go from the stock 7lbs boost to up to 15-17lbs. I'm just proud to this day that I owned one of those cars.... Rod Millen ran all three generations on Pikes Peak and dominated with them. Even when he went to the Tacoma he still used the same engine. Read the Supras over seas would use them for the road course racing.

They were built so strong, frame and body wise. Heavy little cars. Toyota just got out of that type of car too soon. Right after they did, the era of Honda and the "Rice Burners" took over. I put many of them to shame in and around the Seattle area. HEHEHE

I'm glad they were rare in the US. I was very disappointed they never brought the Third Gen to the States (wouldn't pass emissions, I believe....)

I had an '88 GR-4, while my Brother had the MK-III and IV Supra. We had lots of fun!

Yes they where street beasts. Up in our altitude N/A v8s had no chance to the turbo 4 banger and AWD.

I actually just picked up my brothers old car. 1990 Eagle Talon TSi AWD. Thing has ran a low 12 in CO, trans or clutch is gone. It has all supporting mods for pretty much a 900whp build just has a small turbo. Cant wait to get her going again.

 

[JRZEE2000TR4LTD]

The airflow is going from front to back with either configuration, so you're not fighting with the engine fan either way.

My post was somewhat vague. I simply meant you wouldn't mount a pull fan in front, which would be fighting the engine fan. I really don't think you could mount a pull fan on the radiator side.

 

[nevada]

I saw several posts where people were using Pro Comp 7" fans from Amazon. Of course, that seller wouldn't ship to AK, so I just ordered a similar one off of eBay. From the pics and details, I can't tell the difference from Pro Comp and this one:

7" inch Universal Slim Fan Push Pull Electric Radiator Cooling 12V Mount Kit | eBay

(though my allergies are KILLING me this morning so I may have missed something while I was running to blow my nose about 40 times!!!!)

it will be more affective as a puller. as a pusher, everything in front of the blades is restricting airflow, even if just slightly. however setting it up as a puller is often very hard to do. mounting them in front of the radiator is much easier.


I have this fan,

https://www.amazon.com/gp/product/B0084IA8K2/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

smaller and rated less than yours, it works very well. I recommend wiring it to a good relay, and use the appropriate, or even heavier gauge wire. mine moves a massive amount of air, and sound like a freaking tornado when its on.

 

[psraff]

it will be more affective as a puller. as a pusher, everything in front of the blades is restricting airflow, even if just slightly. however setting it up as a puller is often very hard to do. mounting them in front of the radiator is much easier.


I have this fan,

https://www.amazon.com/gp/product/B0084IA8K2/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

smaller and rated less than yours, it works very well. I recommend wiring it to a good relay, and use the appropriate, or even heavier gauge wire. mine moves a massive amount of air, and sound like a freaking tornado when its on.

I like that large covering "shroud" yours has. I do have plans for relays and such. Even looking at a mount to have all relays in one area. My 4Runner has transformed so much over the years, I have them in multiple places. I don't like that. That will be a winter project to clean it up some.

 

[LittleCaesar]

Under normal driving conditions, I'm fine. But once I hit the mountain trails, going slow and in 4WD, I see my temps get up to 230* (even with OD off and shifted to lower gears). That's the gauge I watch the most actually. I plan on putting a switch so I can work the fan manually at all times.

Last time out I was doing something new and my truck was sitting, not moving for periods of time over and over (I was cutting limbs and trees out of a trail). So it was getting pretty saturated with heat (just my opinion, no facts to back it up except my temp gauge).

Then you have merit to do such. Good luck with the fan. Post a pic when the install is all finished.

Also make sure your fan clutch is good to go. Changing the ATF at least every 30,000 miles would be something to consider doing as well.

 

[psraff]

Then you have merit to do such. Good luck with the fan. Post a pic when the install is all finished.

Also make sure your fan clutch is good to go. Changing the ATF at least every 30,000 miles would be something to consider doing as well.

I sure will.

Changed Fan Clutch a few years ago so that should be fine.

I haven't reached 30K yet, but I have that on my summer todo list. All Fluid change. Just did my Power Steering last weekend and I believe I can tell a difference. Last time I changed ATF and Diff fluids, I used Royal Purple. But it's now $16 a quart for some reason up here so that's not going to happen.