auto trans cooler

[rottodiver]

I am going to either replace or add a second auto trans cooler with a fan to my 4.5 petrol.. Any suggestions as to whether replacing or adding a second one will be greatly appreciated.. Also if a second one is suggested where to mount it...

Thanks heaps
Scotty

[Sir Roofy]

if your auto is getting that hot that you need another cooler
it maybe time for a bit of maintenance,oil change ,take the sump plate of and ckeck filter

[rottodiver]

if your auto is getting that hot that you need another cooler
it maybe time for a bit of maintenance,oil change ,take the sump plate of and ckeck filter

hey roofy,
This is purely preventitive, I am off to Exmouth etc over Xmas and the simpson next year.. The car carries a fait bit of weight with all accessories etc..
Do you not think it is worth it?
Scotty
P.s the fan will be in a switch for hot days and off road

[Sir Roofy]

well mate if your not over loaded you shouldnt need an extra fan mr nissan didnt think it needed it either

good luck with it mate

[patch697]

Most common thing done here is the factory trans cooler is replaced with a much bigger after market number.

I don't see any harm in doing both cooler upgrade & aux fan as even with a small load on board its still going to be working pretty hard doing the Simpson.

[rottodiver]

that is what I guessed... I have ordered a big one with the fan, anything to keep the transmission cooler!! Thanks for that

[canuck]

When you install the tranny cooler, make sure you install it before the rad and keep the fluid going through the rad. The ATF needs to be at a certain temp for your tranny to operate properly. I've known people here in Canada who by-passed the rad cooler and wonder why their auto box stopped shifting properly or would not go into OD.

[cliff]

One thing we dont have a problem here with is the AT's getting to operating temp, keeping them cool on the other hand is a problem. I'm just about to do an ally radiator with the largest davies craig trans cooler. Biggest problem is mounting it, I'll be throwing in a bonnet scoop and mounting it on top of the engine, that will keep the front of radiator clear too!

[robbo0001]

Cliff could you throw some photos up of the set-up when its done? Be interested to have a look, something I have been considering for a future mod.

Cheers

[cliff]

Yep will do

[Ade]

I put my secondary cooler behind the radiator (in between rad and fan), it is not the best place but it works on mine.

[Ade]

One thing we dont have a problem here with is the AT's getting to operating temp, keeping them cool on the other hand is a problem. I'm just about to do an ally radiator with the largest davies craig trans cooler. Biggest problem is mounting it, I'll be throwing in a bonnet scoop and mounting it on top of the engine, that will keep the front of radiator clear too!

Cliff, what was the highest atf temperature on yours mate?

[Skull]

The way I see it mate the increase in oil capacity and the ability to maintain cool is above all else with auto's. Better to spend a lil on a good cooler, tis cheap insurance I say. How much for a new tranny? Know what I would prefer.

[Ade]

Yeap..I've got 2 aux coolers in series with the factory's

[Ade]

Seems a bit tricky to mount them but it can be done. I moved my a/c condenser under the chassis, mount the big cooler in between the radiator and the fan, the other one is under the radiator. Plus I have an intercooler in front the radiator.