Thread: TH350 cooler flow

Tweet

Originally Posted by Dieselholic92

See that's what I was thinking about. I don't want to get air in the system. Obviously I would fill the cooler up before I hook up the top line and start the car, but it seems like pushing the fluid up and out the top fitting would prevent any chance of air.

It cannot "get airbound".. above the fluid reservoir, it's all air other than the valve body. After the pump raises the fluid pressure it sends a portion of the fluid over to the cooler and then it's back to the reservoir. All the older trannies had vented to the atmosphere cases. Heat will kill an automatic. No matter how you plumb it, you gain some cooling, if you're that worried about it add an external cooler after the radiator cooler.

Originally Posted by 34_40

It cannot "get airbound".. above the fluid reservoir, it's all air other than the valve body. After the pump raises the fluid pressure it sends a portion of the fluid over to the cooler and then it's back to the reservoir. All the older trannies had vented to the atmosphere cases. Heat will kill an automatic. No matter how you plumb it, you gain some cooling, if you're that worried about it add an external cooler after the radiator cooler.

I'm not worried about cooling at all. I was just wondering if there was a "correct" way to run the lines.

Originally Posted by Dieselholic92

I'm not worried about cooling at all. I was just wondering if there was a "correct" way to run the lines.

Gotcha! I guess the correct way is to connect the lines to something to help shed heat!

I've seen a couple folks make a couple circles with copper tubing and connect it to the transmission. It worked and those rides went decades without failure!

Originally Posted by 34_40

Gotcha! I guess the correct way is to connect the lines to something to help shed heat!

I've seen a couple folks make a couple circles with copper tubing and connect it to the transmission. It worked and those rides went decades without failure!

Like Tech mentioned earlier, one of the problems with an automatic is that you don't want to over cool the fluid. It's designed to operate warm to hot, just not too hot. External coolers are good for applications where you're generating a lot of "extra" heat, like towing, but just throwing one on can result in the tranny running too cool in cold climate driving. Sounds like you've got your's pretty well figured out, but it would still be interesting to know what Griffin says about your connections, just for grins....