Aux trans cooler lines

[shiftmx]

I've had my B&M trans cooler installed for several months now and my temps stay around 165 deg or less (mostly highway driving, stock 2wd), so everything is perfect. There is one thing that concerns me.

I ran the cooler lines through the opening in the front clip where the A/C lines come though. The same as everyone else's installs I have seen, these lines touch each other. My question is...is there any reason to believe this is bad due to the A/C lines being cold and the cooler lines being hot and touching each other? Would the constant heat cycling of the two cause this metal line to crack prematurely? Or, are the temps in the engine bay hotter than what the cooler line is, so basically its not even a concern?

 

[d0nkeyxpunch]

It should be fine, but if it concerns you, you can go get a piece of hose and wrap it around the A/C line.

 

[TheDurk]

I've had my B&M trans cooler installed for several months now and my temps stay around 165 deg or less (mostly highway driving, stock 2wd), so everything is perfect. There is one thing that concerns me.

I ran the cooler lines through the opening in the front clip where the A/C lines come though. The same as everyone else's installs I have seen, these lines touch each other. My question is...is there any reason to believe this is bad due to the A/C lines being cold and the cooler lines being hot and touching each other? Would the constant heat cycling of the two cause this metal line to crack prematurely? Or, are the temps in the engine bay hotter than what the cooler line is, so basically its not even a concern?

Those A/C lines aren't cold. Refrigerant comes in straight from the compressor and it's HOT. It then goes to the condenser to shed heat just like the ATF goes to the cooler to shed heat. Coldest those lines could ever get is ambient when A/C is off. Otherwise it's hotter. Cold stuff is all on the other side of the firewall between the expansion valve and the evaporator. Nothing to worry about here.

 

[shiftmx]

Those A/C lines aren't cold. Refrigerant comes in straight from the compressor and it's HOT. It then goes to the condenser to shed heat just like the ATF goes to the cooler to shed heat. Coldest those lines could ever get is ambient when A/C is off. Otherwise it's hotter. Cold stuff is all on the other side of the firewall between the expansion valve and the evaporator. Nothing to worry about here.

Awesome...I did not know the contents of the metal line was hot at this point. I will just leave the line where it is. Thanks for the replies guys!