Adding transmission cooler

[Dallas4u]

Tone is correct... over-cooling isn't good, either. Besides, you may just be spending money where it isn't needed. If you find you COULD benefit from a tranny cooler, they are pretty simple to install... you just have to find a place to mount it.

I installed one on my '97 Prelude as it was an auto with "sport shift". Many other owners had noted that the tranny fluid temps would get pretty high because of the stress a lot of the mods were putting on the tranny. I did a few mods to improve performance, but the manuals were really meant for that... so anything I did that made a significant difference in HP/torque put more stress on the tranny, hence a possible need to cool it down.

[dkmiller68]

What should the transmission fluid tempreature be (realizing that ambient tempreature is a big factor)? Any specs on that?

[dkmiller68]

here's a little cut and paste from Amsoil...
Over 40 percent of total energy loss in an automatic transmission can be attributed to the act of pumping automatic transmission fluid to the transmission's working components during transfer of power. The mechanical efficiency of an automatic transmission is directly affected by the viscosity of the transmission fluid. When temperatures drop and cause ATF to thicken, transmission efficiency and power decline. Industry tests on torque loss demonstrate that a temperature increase of 150 degrees F increases transmission efficiency by up to 37.5 percent. In other words, as viscosity decreases, transmission efficiency increases.

Higher quality automatic transmission fluids can have a profound impact on transmission efficiency. Automatic transmission fluids with lower cold temperature pumpability properties effectively keep transmissions running efficiently during cold weather, maximizing both transmission power and fuel economy.

[dkmiller68]

another cut and paste...

B&M Environmental Control System
For drag race vehicles that have a hard time maintaining consistent transmission fluid temperature. With the (#70266) B&M Supercooler you have the B&M Environmental Control System. This system will assist in maintaining the proper transmission fluid temperature (160 - 200 deg.).