Trans Fluid Temp

[WHITER33GTS-T]

Ive got a C4 auto in my R33 and just want to know what others see on the temp gauge. I dont have one as yet but will order one soon. I have a good size cooler at the moment but dont want to have issues with the auto getting to hot.

What size cooler cores are people running with modified autos...?

Is anyone running a thermo fan to help cooling..?

Also for people running a C4, what have you done to get the speedo to work correct..?

Cheers

[KiwiRS4T]

Below is a chart showing how long your trans will last at different temps (its a US chart so in fahrenheit). It is recommended that you keep atf temps below 80deg centigrade (or say 180 fahr). I had the biggest a/market trans cooler on my Stagea when it was auto but ideally you would have it thermostatically controlled just like an engine oil cooler. You should still run it through the heat exchanger in your radiator to assist in bringing it up to optimum operating temps asap.

[WHITER33GTS-T]

Below is a chart showing how long your trans will last at different temps (its a US chart so in fahrenheit). It is recommended that you keep atf temps below 80deg centigrade (or say 180 fahr). I had the biggest a/market trans cooler on my Stagea when it was auto but ideally you would have it thermostatically controlled just like an engine oil cooler. You should still run it through the heat exchanger in your radiator to assist in bringing it up to optimum operating temps asap.

I have the biggest after market cooler I could get. My car was originally manual so dont have the heat exchanger in the radiator. Where could I find a thermostat kit for the auto..?

I have seen that chart on the protrans site that the auto came from. Im just worried that it will over heat and not have the volume of fluid to keep the auto cool.

Did you have a temp gauge and if so what were cruising temps compared to giving it a hard time..?

[KiwiRS4T]

No sorry - never had a temp gauge on it. Did a few track days and water temp was never an issue but then went manual.

You could get one of these (I have one for my oil cooler) but may be overkill for atf :

http://www.earls.co.uk/earls/coolers/components/thermostats.html

If you use a good quality synthetic atf maybe just fit the gauge and see how it goes.

[WHITER33GTS-T]

Yeah I guess I will just have to see how it goes.

Thought someone might have been able to give a heads up on running temps.

[chuckie]

i run transcooler from RX7FD built in thermostat,

would look at Derale coolers kits ae good gear,

http://www.summitrac...nk%7cAsc&page=4,

http://www.summitrac...13960/?rtype=10,

http://www.summitrac...arts/DER-15850/,

Good luck with your search,

[MrStabby]

If you use a good quality synthetic atf maybe just fit the gauge and see how it goes.

+1 Full synth will tolerate higher temperatures than regular fluid. You should be able to get the specs from the manufacturers websites.

[WHITER33GTS-T]

I will see how the temp goes and maybe add in a 2nd cooler if needed. I will run a electric fan on the cooler and switch on when needed as it will have a hard life when it first sees the track again

[KiwiRS4T]

Doing more than 100 on the track will supply more air than any fan.

[Moodles2]

Fan might be a restriction too at 100+

[WHITER33GTS-T]

Doing more than 100 on the track will supply more air than any fan.

More than 100 with foot jammed on the brakes. haha

Car is pretty much for the drags and powercruise.