Differential and Transmission Cooler Home made version

[1of1TA1.0]

I know that Doug is currently working on a cooler set up, but I decided to build my own. I am not overly concerned about drilling holes in the car. I know some are, but once it's tracked, I don't think the future buyer will care that there is an add on.

I built a very similar set up for my 2008 ACR-X clone so I decided to build it very similar. I found a few different difference between the Gen IV and the Gen V that makes the ACR-X version to not work for the Gen V. First, the belly pan bolt holes on the Gen IV are Welded nut plates and stick down about 1/8". The Gen V actually uses Riv-Nuts and they stick down roughly a 1/16 of an inch. This immediately make the ACR-X design have to change. At least in material thickness and hardware selections. I used thinner aluminum and rivets where items attach to the frame. The second difference is the placement of the NACA duct (for lack of a better description). It is much further back towards the differential. This will reduce the dimension the transmission cooler can be height wise. Not an issue however.

I have not completed the project yet but decided to post progress pictures. I still have to make the braided lines as well as wire the system up. I already have everything, just haven't had enough time to work on the car.

So let's see the progress.

I mounted the Diff Pump in the same location as the X. The rear X Bracing on the frame is actually different than the Gen IV too.

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I then made a mounting plate, the fan shroud, dual 4" Blowers and the Setrab cooler all mount to it. It in turn will mount to the bottom of the Tub.

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After I got it all done, I drilled and installed riv-nuts in the tub.

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Now, all I had to do is drill the mounting plate and bolt the cooler assembly to the tub.

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[1of1TA1.0]

A few more pictures of cooler assembly installed

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After finishing this part I moved onto the transmission cooler and pump.

I didn't state this before, but all brackets were made out of construction board first. Easier to use it and tape

[1of1TA1.0]

So the first thing to point out on the cooler for the transmission is the differences from the Gen IV to Gen V

Gen IV welded nut plate

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Gen V Riv-Nuts which are much thinner

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You can see the difference of material I used to make sure it cleared the Belly pan.

The other thing was the NACA duct placement. You can see where I mounted my Cooler in the Gen V

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It fit pretty good in this location

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[1of1TA1.0]

Mounting the pump for the transmission

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Couple of random shots

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Rear shot of cooler for diff through the rear bumper (which has to come off to install all of this by the way)

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I'll update this thread when I get the lines and wiring done!

[ayousef]

Sorry for the off topic but do you have clearer pics of the driveshaft? Surprized why no one has a carbon shaft upgrade for this car?

[1of1TA1.0]

No worries, I'll have to take one but the car is still on the lift. Anything specific you want in the photo?

[ACRucrazy]

Because the stock driveshaft is so short there is not really a weight savings. There are a few CF DS out there however.


Great job on the cooler upgrade BTW!

[SSGNRDZ_28]

Sorry for the off topic but do you have clearer pics of the driveshaft? Surprized why no one has a carbon shaft upgrade for this car?

Looked into this, the stock shaft was lighter than the carbon shaft on the market.



Anyway nice job, looks like a good install!

[1of1TA1.0]

Driveshaft picture

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[ayousef]

Wow thanks for the picture, makes me wonder why the Carbon shafts are heavier than the stocker! I was hoping there was some weight savings there.

[SSGNRDZ_28]

Wow thanks for the picture, makes me wonder why the Carbon shafts are heavier than the stocker! I was hoping there was some weight savings there.

They were only about 0.2 lbs heavier. Most of the weight is in the aluminum ends and I think it was a larger diameter. The aluminum ends are bonded to the carbon shaft so unless there's some length it isn't much of a savings. There are other benefits like more twist for smoother power transition, etc.

[Arizona Vipers]

They were only about 0.2 lbs heavier. Most of the weight is in the aluminum ends and I think it was a larger diameter. The aluminum ends are bonded to the carbon shaft so unless there's some length it isn't much of a savings. There are other benefits like more twist for smoother power transition, etc.

Have you been looking into making any other parts in carbon fiber? What about sway bars? That would save 20 lbs....