thoughts on transmission cooler location.
- Thread starter gwhiz
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Make sure you run the transmission fluid through your radiator before your cooler or you have a good chance of running the fluid too cool. The coolant in the rad heats up the transmission oil to it's running temp. If the oil is too cool you'll destroy the transmission prematurely.
gwhiz said:
You need to get a kit that included the proper fittings. One fitting screws onto one of the transmission lines and the other screws into the radiator. The fittings are barbed so the hoses fit onto them with clamps and seal well. The kit comes with hose too. Braided lines are not needed and IMO are overpriced and look stupid anyway. This is the kit I'm used which includes the proper fittings, clamps, hose, and I know fits the way I described above;
http://www.summitracing.com/parts/BMM-70264/
Although there are many who disagree with what pontiacgp says about running through the radiator, I myself feel it makes sense and I run mine that way.
pontiacgp said:
I've heard this thrown around quite a bit but does anyone have actual proof of what too cold is? I have NEVER seen this with any of my vehicles.
Heck, it's been 0-5*F a few days here and my '08 GMC's transmission doesn't make it much above 100*F and that's how GM designed it and warranteed it apparently...
FE3X CLONE said:
I know I don't have actual proof but I guess one could say that the newer cars are specifically designed to not have to go through the radiator due to the transmission components, cooler location and other factors I'm sure. Hell, maybe they're just trying to save some extra pennies not having to deal with it? I certainly know there's no way going through the radiator cooler and an external cooler both could be bad in any way for an our older trannys, so that's how I did mine.
Another way to look at it is an external cooler is definately a good thing on an older transmission, yet they never came from the factory that way because the radiator cooler was 'good enough' for a daily driver.
I have a client who owns a transmission shop and other transmission builders have told me the damage that low transmission temps can cause. I found this online but I was hoping to find the specs on the oil. The newer oils work better when colder and hotter than the oil used in our transmissions
But what is the optimum auto trans fluid temperature, and is there such as thing as too cold or too hot a temperature? In a perfect world you want to keep auto trans fluid temperatures between 175 and 200 degrees F, although I wouldn’t panic with a real-world 150- to 225- degree range. You don’t want to lean on the trans below 150 degrees, any more than you’d lead-foot a cold engine. On the high-end side, you could even slide by at 275 degrees for a short time during a long hillclimb but at the cost of considerably shorter fluid life. By 300 degrees you’re not only killing fluid longevity, but internal trans parts are melting down as well.
http://www.hotrod.com/techarticles/gene ... ewall.html
But what is the optimum auto trans fluid temperature, and is there such as thing as too cold or too hot a temperature? In a perfect world you want to keep auto trans fluid temperatures between 175 and 200 degrees F, although I wouldn’t panic with a real-world 150- to 225- degree range. You don’t want to lean on the trans below 150 degrees, any more than you’d lead-foot a cold engine. On the high-end side, you could even slide by at 275 degrees for a short time during a long hillclimb but at the cost of considerably shorter fluid life. By 300 degrees you’re not only killing fluid longevity, but internal trans parts are melting down as well.
http://www.hotrod.com/techarticles/gene ... ewall.html
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