Anyone have links to pictures of where you have the radiators mounted for trans/diff coolers in a C5Z? Up front or in back? How big are the radiators?

 

mine are behind the rear Z brake ducts.

 

Trans cooler ( left ) AC Condensor Oil Cooler (right)
Passanger side - - Drivers Side


I dont have a diff cooler. Change trans and diff fluid evey 4 events. Fluid looks almost the same coming out as it did going in.

 

I prefer mounting them in the back...around where the mufflers used to be. You need the weight in the RR of the car anyway. If you run all those lines and such to the front (radiator area), you're adding a lot of weight, fluid, risk, etc. Enough air gets to the small coolers if you mount them in the back. DRM has a pretty nice setup for both too.

 

My photobucket account is not working for some reason. I have about 10 different pictures that I could email you.

Randy

 

Any way you do it you will end up making your own brakets.

I have installed both the LG and the DRM set-ups.

The DRM set-up mounts behind the rear brake cooling ducts. As seen below VVVV.



I made a braket for the LG kit to mount behind the differential between the diff and the rear sway bar. I don't have pictures I can link to but if you PM me your e-mail I can send you some pics.

 

OK, thanks for all the responses guys.

Let me present the project in a little more detail.

We're going to install diff/trans coolers on ZO6 Driver's car. MY 2001 C5Z, intake, LG Pro LTs, tune, Borla Stingers, 375 RWHP. He got the hi trans temp warning at the NASA TT event at VIR (running 2:08s). We've got six weeks to get this designed, installed, and sorted before Chin Motorsports & Viper Days @ VIR the first two weeks of July.

He already has 2 lube pumps, 2 fans, and some AN lines fittings.

We spent some time crawling under the car yesterday to plan the routing out. This car is still (for now) street legal and driven a couple days per week. Coolers used at ~ 6 track events per year.

1. He wants to keep the Borla's in place so mounting in the typical T-1 spot is difficult.

2. We want to preserve the rear brake cooling flow path, have heard others' experience that mounting the coolers here compromises rear brake life.

3. Considering going up front like AU N EGL. How do you route the lines up front, what kind of line? Braided or not? Trans up front, diff in rear?

4. One possible plan is depicted in the pictures below (dual rear cooler). Run AN-8 lines from diff/tranny, through either the trunk side wells or center well, come out above the bumper frame rail. Remove license plate frame, cut reinforcing fiberglass from middle. Install doublestack setrab 2" or 3" (models 607 or 610), fabricate some custom bracketry and a fan shroud to push air out. Since pump and cooler will be above the diff/tranny mount the cooler with fittings facing up to minimize the amount of lube that flows back to reservoir when not at the track (pumps not running).
When not at the track, reinstall license plate, you'll never know the cooling system is back there.

We'd appreciate opinions from all.

Schematic


Picture

 

I have thought about that spot also. The problems are
1. mounted high in the chassis
2. mounted in the way back
3. bulk head would have to made(hot oil is for bedrooms)
4. air out is easy, how are you going to get air in?

Can it be done? Sure you just have a few things to work around.

Randy

 

To both Randy & John,

Regarding coolers in the rear brake ducts. One guy told us that he had a trans only cooler mounted on the rear brake duct, with the other side unmodified. He said he got significantly less brake life and cracked rotors faster on the side with no cooling. What's your experience with this setup?

 

Ive had my trans cooler in the drivers side brake duct for over a year. NEVER had a cracked rotor. No noticable wear on pads. Im going to do a diff cooler on the other side this fall.

I would mount them there agian with no issue whatsoever.

At that time my brakes were stock rotors and carbo pads. SS lines, ducts, SS pistons in stock calipers.

Just moved up to full Wilwood setup.

 

My trans pump is located in the right rear wheel well.

The lines run up under the right rocker pannel.




I did not do this myself. Phoenix did the work.

Mounting in the rear Z brake duct areas is a very good idea. Good cooling, short lines, rear brakes really dont need much cooling.

 

Here's a little history on my cooler experience. This may be relevant since you are working on my old car and installing my old pumps....

I originally installed the trans cooler set up in the rear duct location based on information I got from here. I removed the passenger cooling duct so I would at least not cool the brakes evenly. The first time on the track with this setup it was obvious the rear brakes got much hotter then before. While I don't remember cracking rotors, the dust boots melted, the calipers changed color and pad life was reduced. This was stock rear brakes, NAPA rotors and Carbotech XP9's. I do not use A/H or T/C. YMMV

Your license plate idea looks great. I wish I would have thought of that.

 

Ben - FWIW, I'm running without a rear brake duct on the passenger side. It is totally gone, however I'm sure some air still manages to flow through the opening, as the opening is not blocked. Still have the duct in place on the driver's side.

I have run 3 events at VIR this year, and one last year, with the missing duct, and have seen no abnormal wear on the ductless side. Take into account also that this might be due in part to my style of braking, and the ambient temperatures. I have been running Carbotech XP12/10s.

Chris

 

All of our big tire cars don't run the rear ducts. We did some testing on this subject. It was a toss up, no real data for the con. So we went with it, and that location makes the most sence for a side window, full muffler, street-track car.

Randy

 

So, what happened to that duct???

 

Yeah, I was actually wondering that myself

 

Nice picture AU N EGL. So when you say "under" the rocker panel, doesn't that expose the lines on the bottom of the car? Do the line run inside the bodywork goes below the door?

How about the rubber lines vs braided lines? Thanks, -BG

Oh, and look at all the pretty blue cars lined up!

 

It is sitting on my workbench at home. Thanks for asking

 

Here is my setup. Have not finished it yet, still have to plumb and wire the diff side, but the tranny cooler works great.. temps stay under 180 and do not have air inlet plumbed yet..
http://forums.corvetteforum.com/phot.../ppuser/176041
http://forums.corvetteforum.com/phot.../ppuser/176041
http://forums.corvetteforum.com/phot.../ppuser/176041

 

Nice setup, what coolers do you have, seems like they have integrated mount points for the fans, or is that a shroud? What's the cooling area (sqin)?

Also, it sort of looks like the C6.R has some sort of cooler in the back, check out the screen where the license plate goes.

http://www.corvetteracing.com/pictur...o009_jpg.shtml

Anyone seen where the tranny/diff coolers are on a C5R or C6R are?