C4 Transmission Cooler Lines

**BPVan** · December 15th, 2012, 11:15 AM

Does anyone know which port is the outlet on the C4 transmission cooler line ports? I have been searching around with out much luck. I found one site (http://www.therangerstation.com/tech...AutoTrans.html) that says the rear is the return, can anyone verify this?

I am setting up a remote transmission cooler with a thermostat/fan and the directions call for the thermostat to be on the inlet of the cooler.

**Jeff W** · December 15th, 2012, 11:37 AM

Charlie thinks you are right...

http://www.charlietranny.com/c4.htm

**BPVan** · December 15th, 2012, 11:47 AM

It also looks like a couple of the Mustang forums agree as well. Thanks for the info!

**redfalken** · December 15th, 2012, 02:20 PM

I concur! Here's the write-up on my original install. It's been refined a little but the basics are the same. I did write "...the forward fitting on the tranny where the hot fluid comes out."

http://www.redfalken.com/pages/coolerlines.html

**BPVan** · December 28th, 2012, 08:27 PM

Thanks Kenny, Its good to get the right information from a reliable source.

I finished up the installation tonight except for the post ignition wire. I ended up welding in a pair of 3/4" angle iron in the void in front of the right rear wheel well. I left enough space on top for air to flow in. I painted the exposed metal with Eastwoods for now. I will eventually be fixing a couple of PO drilled holes in the floor and undercoating this area but I wasn't about to open a WIAI tonight.

**redfalken** · December 28th, 2012, 10:04 PM

An electric fan...fancy! I've heard so many people say the best thing you can do for your tranny and make the fluids last is to keep things cool. And filling a C4 is not cheap! $75-100 for a complete fill.