Transmission Oil Cooling Solutions

[tokyogtr]

Other than fitting an entirely new oil transmission cooler, I'm thinking the combination of the following should have a substantial impact especially for those tracking the car and then between sessions avoid the massive heat soak from the exhaust.

First: cooling fins

ARC International Inc. IN JAPAN�@�b�@ƒg�[ƒ^ƒ‹ƒ`ƒ…�[ƒjƒ“ƒOƒp�[ƒc�@�b�@”MŒðŠ·‹@ŠíŠJ”*�E�»‘¢

This product looks very basic and I think would be a pretty good short term solution IF it fits ok. Anyone got any experience of this?

Second: ceramic coating

Welcome to Performance Coatings

The exhaust is the most obvious source of heat soak.

I'm too swamped to get this done anytime soon but would love to hear from anyone that tries it... Anyone in Singapore or US???

[mindlessoath]

the trans gets so hot on a track day that this solution isnt going to do much. it may help from going into gimp mode for a standard r35, but put some more horsepower on the car and it may do just that, gimp...

I HOPE this solution helps from getting a gimp. if it gets hot, thats fine as long as it doesnt let you loose, right

and yes, next to the trans being really hot the next source is obviously the exhaust. im wondering if a stainless steel solution will help fight the heat more... doesnt it wick heat away more so than titainum?

[tokyogtr]

are people running into this problem during the 1st run at all?

[doggiehowser]

tokyogtr, where did you get the transmission cooler from?

I know Zele had a photo of their kit but I didn't see any pricing yet.

[tokyogtr]

i don't have one... don't really need it here.

[KingAbarth]

I have previously used thermal coating for my turbos and down pipe for my rex and evos.
It does significant drop the temp emmitting from the turbos, but i think the problem with the transmission in the GTR is that it will still remains hot even with these. The problem is a) there is a lower cover that conceals the trans and b) that area is generally drag efficient. Meaning, unless u lose the cover and install a 'scoop' to divert the air, its not going to help the heat soak one bit...

[mindlessoath]

well.. gimp mode has only happend on a few cars due to overheating of the engine oil... not trans oil. and never on the first lap. usually its been a hot day out with a few laps before.

king abarth has a point also.

[sewid]

Originally Posted by doggiehowser

tokyogtr, where did you get the transmission cooler from?

I know Zele had a photo of their kit but I didn't see any pricing yet.

Zele's kit is a diff cooler not a transmission cooler and it's not completed yet. When I asked them about a transmission cooler they said they aren't planning one right now.

The diff cooler will be completed soon.

I think there's some unique challenges when fiddling with this transmission and probably a bit of R&D needs to go into making one without causing other issues with trans oil pressure etc.

Wrapping or coating the exhaust is great if you want to spend the money, keeping the heat inside the exhaust is a great way to keep gas velocity high and hence exhaust flow but coating is well expensive. Wrapping isn't bad if done well and not too costly.

The ARC Cooling fins is fine, you can make it fit anything you want really as you can cut it and use as much or as little as you want. Ducted rear diffuser is also a good solution but no-one outside Nismo is doing it just now so you'd need to go custom.

[Robbie J]

BTW, what's the transmisson oil spec? ie non Nissan

R

[tyndago]

Originally Posted by Robbie J

BTW, what's the transmisson oil spec? ie non Nissan

R

Its a type of ATF. Green. Smells and tastes just like it.

Seems like from what I hear, might need to try some Shockproof in it...maybe Shockproof Light... I think Heavy might screw with some things, like the clutch.

[tokyogtr]

look at this pic and you'll see it's pretty obvious how much heat will be stuck under the car when not moving. i'm definitely going for the wrapping or some sort of heat shield/diffuser scoop option.

[mindlessoath]

your pic doesnt show.