NEWS PARTS JEEP & 4x4 ATV & UTV

aftermarket tranny cooler

382 Views 7 Replies 6 Participants Last post by Scoobydoo, Jun 17, 2002

044

Discussion Starter · Jun 17, 2002

My dad has a '93 Z71 that we are looking into putting on an aftermarket transmission cooler on because it sees quite a bit of towing duty. How much trouble is doing this, and how exactly do you do it? Is it as easy as disconnecting the lines that go into the radiator now, and putting them on the new cooler?

Any info is appreciated.

Thanks.

Save

1 - 8 of 8 Posts

594

· #2 · Jun 17, 2002

They are a piece of cake to install. I would go with Perma Cool trans cooler for a class "A" motorhome if you have the room. You should be able to measure the room you have behind the grill and decide the size you need. Get the biggest cooler you can stuff under there.

There are two schools on installing the cooler. One is to just run the cooler isolated by hooking up the cooler lines directly to the cooler. The other way is to let the fluid go through the radiator first, then route the fluid from the lower cooler hose through the tranny cooler.

OK, OK... it makes sense to me... kinda.

Get the biggest cooler. It comes with instructions. Should take no more than an hour with hand tools to install (Taking front grill off take s the longest). Cost: about 60.00 out the door.

Save

882

· #3 · Jun 17, 2002

Here's the tranny cooler that i picked up from summit racing. It is the best that i found out there and I'm really happy with mine.

Save

034

· #4 · Jun 17, 2002

That's not entirely correct, the routing is through the auxillary cooler *first* and *THEN* into the radiator... The reason for this is to ensure the temperature is fairly stable, plus have a slight cooling effect on the coolant (since it should cool below operating temp in a huge multipass tranny cooler)... This is especially true if you're in cooler climates during the winter...

My favorite style is stacked plate... It's the most efficient from a heat exchanger type point of view, etc...

See less See more

Save

044

Discussion Starter · #5 · Jun 17, 2002

stacked plate... is that a type of cooler?

while we're talking about cooling temps here, ive got another question...

how much effect will putting an auxilary fan on the outside of the radiator have on the running temp of the truck during 5 o'clock traffic? the truck heats up at stop lights and cools off when we start driving again, so i'm thinking that an electric fan would help to cure this... the A/C also sucks while at a stop, so i think a fan would also help this... what do ya'll think?

thanks again

Save

330

· #6 · Jun 17, 2002

"checker auto" sells a great "Plate" style cooler "complete kit" I think it was about $30 works very good. about an hour to install.
I would run to the radiator first then the cooler then the tranny. THAT is what the instructions tell you to do.
If you run to the cooler first and then the radiator it would completly defeat the purpose of the cooler

since you cooled the fluid down, and then warmed it back up in the rad, you might as well have never ran it through the cooler in the first place.
I dont think a stable temp is all that important since it is never consistant anyway. It starts out whatever the outside temp is and warms up from there anyway, an I SERIOSLY doubt you can over cool tranny fluid

See less See more

Save

800

· #7 · Jun 17, 2002

I was thinking about doing this as well. Corect me if I'm wrong, but there's a small tranny cooler already in the bottom of my radiator. Is that done away with or do I juat plumb the new cooler and run them both?
Gracias,

Mark

Save

330

· #8 · Jun 17, 2002

Yes there is one there.
Thats what we are discussing wether it is better to still use it or not, or use both, and in what order.

I use both, so the fluid runs from the tranny to the Stock cooler in the rad (this cools it some), then to the external aftermarket cooler that you mount behind your grill & in front of your rad (this cools it much more), then the fluid runs back to the tranny. (nice and cool)

See less See more

Save

1 - 8 of 8 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month