mk1gt500

Hi
does any one know if I can use the 993 tip trans cooler to cool the 997 gt3 gearbox as these boxes are cooled by the engine water cooling system?


Regards
Josh

trophy

That would work. You would still need a pump as well as some way of turning it on and off automatically (thermo switch mounted in the transmission). Lines of course. The Tip cooler itself has some non standard fittings on it, I would cut them off the cooler and have someone TIG some dash fittings onto them instead.

I have a Tip cooler ready to go in my car for transmission cooling, once I get the transmission drilled for inlet/outlet as well as temp sensor.

mk1gt500

Hi thanks for your reply
Do you know how the oil is pump through the factory cooler on the gt3 gearbox.

Thanks
Josh

trophy

There is any pump on the GT3 Transmission, the oil flows by the natural turbulence within the transmission. Someone else may have a better explanation...

Bill Verburg

From '04 Gt3 use a trans cooler similar to this, it's oil to water and also heats the fluid when it's temp is below spec

There is also an internal spray bar

he early 993 Gt3 trans are a little bigger than the 993 trans but can be fitted w/ some effort, I don't remember the details though, They also changed from rod to cable shift after the first couple of years so the shifter would also need to be changed

mk1gt500

Thanks for the information
So can the gearbox be used with out the water cooling from the engine would this damage the gears in the box

Thanks

Josh

Bill Verburg

No
the first issue is the esternal dimensions, these are bigger than the 993 g50's
the second issue is the shifter
the third issue will be the heat exchange mechanism, the trans has an internal mechanical pump, spray bar and pickup. The inner loop just circulates fluid from the trans through the oil/water exchanger and the back to the trans, there is also a thermostat integral to the unit that bypasses the heat exchanger, it just returns the fluid to the trans. W/o the late water cooling circuit you would want to circulate through an oil/air exchange like the older cars used. Unless you remove the pump you must leave a fluid circuit in place

mk1gt500

Thanks bill for the info
This car was a tip if the gearbox has a internal pump can I use the tip cooler in the front of car to cool the gearbox I have already sorted the cable and shifter problem when I get the box in the car I will post some pics for you
Thanks
Josh