Transmission Oil Cooler Bypass/Rerouting/Replacing When Installing Rear Coilovers

[m3b]

Installing the Koni 30 Series Race Rear Coil-Over Kit on a 951 and surprise-surprise the right rear passenger-side coilover interferes with the transmission oil cooler line (coil). Is there a quick solution for bypassing/rerouting/replacing the transmission oil cooler line?

[aftermath]

bump, I will have this problem over the winter I assume

[legion]

Can you use some kind of fitting (like an "L" fitting) to route the oil line out of the way?

[bazar01]

The way I see it, you will need to fab two fittings that matches the transmission oil cooler ends with standard 1/4" female NPT threads to adapt regular brass flare fittings to be able to install a 3/8" by-pass copper tubing.

[Techno Duck]

If your not already, use a 2.25'' diameter spring in the back. Its still a tight fit, but the cooler loop can be tweaked slightly by hand to clear.

[m3b]

Originally Posted by bazar01

The way I see it, you will need to fab two fittings that matches the transmission oil cooler ends with standard 1/4" female NPT threads to adapt regular brass flare fittings to be able to install a 3/8" by-pass copper tubing.

Thanks bazar01, basically we followed a bypass approach similar to your suggestion as a quick fix for this Sunday's autoX. The trans oil cooler's fittings are 5/8" OD which seal against O-rings retained in the transmission inlet and outlet ports. Took 1/2" OD soft copper pipe and sweat soldered two collars at each end made from 1/2" ID - 5/8" OD Type L rigid copper pipe. Bent the soft copper pipe similar to the cooler at the rear of the trans, and bent it in a S-pattern around the gas tank and into the side of the trans. It came out great. The O-ring seals are holding-up nicely - so far not a drop. Parts less than $10 at Home Depot and Ace HW. Temperature-wise the trans should be fine for the next two autoXs, but we may look for an improved solution with additional cooling for the next track event.

[m3b]

Originally Posted by Techno Duck

If your not already, use a 2.25'' diameter spring in the back. Its still a tight fit, but the cooler loop can be tweaked slightly by hand to clear.

Thanks TD, we are using the Koni 30 Series Race Rear Coil-Over Kit. We may look to tweak the cooler loop for our permanent solution. We didn't see how that would come close to clearing with our first look.