Hey guys,

How can you add a oil cooler to a manual transmisssion?

will you need a pump to move the oil?


Is there some way to use teh pump already in the transmission?

thanks:hail: :hail: :hail:

 

You would need a pump.

There is no pump in the trans.

Easiest way would be to put fittings in where the pipe plugs are, and just pump the fluid through a cooler, at low pressure.

 

I thought all transmissions has a pump to move the oil around, or maybe that is just automatics.

thanks for your help:hail: :hail: :hail:

 

A manual transmission doesn't need a cooler especially one that's in a car. The oil isn't heated up like it is in an automatic.

 

even when driven hard?

You are probably right. Aren't the gears just sorta laying in the oil?

thanks:hail: :hail: :hail:

 

If it was in a truck and always pulling heavy loads then a cooler might be needed but the oil still isn't heated up very much.

In an automatic transmission it's not the tranny that heats up the oil but the torque converter.

Manual transmission gears are lubricated by splash. As long as the tranny is full then everything gets lubricated.

 

I don't know if even NASCAR guys use a trans fluid cooler... they do use one on the rear end, it's a pump driven by a belt that they put a pulley on the yoke to drive; I don't think I've ever even seen a trans cooler on one of their road race cars or Pocono cars where they use other gears besides direct for long periods of time.

Seems like it couldn't hurt, but I guess it really isn't necessary.

 

I think the the Subru WRXs have them

 

Heh, the guys at work and myself were wondering the same thing. Last week some scruffy looking guy brings in his 98 Vette with a 427 Lingenfelter crate motor that he apparently used for road racing. We lifted the car and he had a tranny cooler on the T-56.....we asked the same thing...how the hell does the fluid circulate?? Keep in mind the Vette T-56 is in back and the cooler was all the way in the front fender making for a long path.

 

Eaton Roadranger transmissions (9-18 speed) in trucks have a pump built inside the tranny. They need a cooler because of the high torque loads put on the gears when pulling a loaded trailer.

It could be that the Vette has a similar designed casting that although it looks like a normal T56, it has a pump inside it.

Without an internal or external pump, there's no practical way to install a cooler.

I think the first thing you should do is install a temperature gauge in the tranny and see what kind of temperatures the oil gets to. If the oil temperature doesn't get above 180* even when worked hard then a cooler isn't needed.

Cooling manual tranny oil and cooling automatic tranny oil are 2 different things. An automatic tranny needs cool oil so that the frictions don't glaze up or all the seals do get cooked and hardened up. They rely on hydraulics to operate so cooked seals are brittle and will leak.

The manual transmission is full of roller bearings and gears and the only seals are on the input and output shafts. Extreme high oil temperature won't hurt the tranny in the same way as in an automatic. The oil might catch on fire at over 500*