Aux transmission cooler 850R

gswede · Post by **gswede** » 01 Apr 2011, 12:28

My 850R had a tranny go bad at 90K miles and it got replaced for a "new" autobox.
Did a flush (drain & fill) the other day, 20k on the new transmission. Oil looked pretty bad and i figured for some longevity and peace of mind I`d install an auxillery transmission cooler.

Parts used:
1. 16 row Mocal cooler 1/2" outlet threads
2. 2 X 1/2" by 3/8" fittings
3. 6` High temp oil hose (5`will suffice)
4. 2 X Magnafine 3/8" nipple filters
5. 6 X Hoseclamps

And finally some Premium ATF DExron III or Mercon.

Pictures is self explanatory i guess.
Note: no cutting required, holes where you see pipes go through belly pan was already there. The stock airfunnel back on after pictures without hassle. To see the fittings you really need to look under the car, not visible unless extremely short and attentive. In all, a 30min job.

First some photos from the drain & fill

Cooler pics

Post by **ojdorson** » 01 Apr 2011, 12:41

Thanks, this is great! I'm planning to do this myself... eventually. I'm worried about your pipes below the front dam - I've scraped that thing enough to worry. Would the cooler fit in the same location upside down? What is the cooler affixed to?

Post by **jblackburn** » 01 Apr 2011, 12:43

Thanks for putting this up - it looks like a nice, clean addition. I'm thinking of adding one of these in the near future. I'll probably have to find somewhere else to put it (the middle somewhere?) where one will actually fit since my car has fog lights installed where that grille is.

The other possibility, I suppose is mounting it in front of the radiator behind the main grille in the hood, though I wouldn't like how that would look when you open the hood.

gswede · Post by **gswede** » 01 Apr 2011, 12:53

The cooler is fitted with zipties on top and the hoses hold the bottom end in over the "lip".
I did not want a rigid fixture as some flex is warranted when installing the cooler this low. An option is of course to use a cooler with fewer rows. At most the hose is not more than 7/8" below the lip.
Guess I could have had the fittings on top but that would require cutting plastic and would be a much more fiddly job. Sore fingers and kinked pipes dont make for much cooling..

Checking for leaks and such is the easiest thing now.

BTW, not even a single drop of ATF was spilled. Excpected some when i cut the top pipe, but no - nada spill.
Clean and easy

lindy8_man · Post by **lindy8_man** » 10 Sep 2012, 19:05

I'm a little concerned that the cooler fittings are below the trim of the car. is there a skid plate or something that protects them? What happens if you park the car with a high curb? I would have looked to mount it higher...

byeboy · Post by **byeboy** » 10 Sep 2012, 19:32

I'm going to put a cooler on my "R", as well, because I pull a lightweight trailer around the Hill cOuntry hauling my Metal ARt...and it gets really hot down here in South TexasS
I'm not too keen on those small inline filters...they look like potential impediments to flow.
Also, that fluid coming out looks rather dark for only 20K on a new transmission..but maybe that's the break-in wear showing!

I keep wondering why a spin-on in-line auto engine oil filter wouldn't work? Greater capacity, and has a by pass valve should it ever starts clogging. I know there's a Magnaflow (or something like that) , but why not a simple, inexpensive car oil filter?

Post by **bigdaddylee82** » 11 Sep 2012, 14:02

byeboy wrote:I keep wondering why a spin-on in-line auto engine oil filter wouldn't work? Greater capacity, and has a by pass valve should it ever starts clogging. I know there's a Magnaflow (or something like that) , but why not a simple, inexpensive car oil filter?

They do:

I put a Derale 13090 filter kit in line between the transmission and the aux cooler I'm using.

matthewsvolvosite.com/forums/viewtopic.php?f=1&t=25601&start=42

- Lee

neworleans · Post by **neworleans** » 12 Sep 2012, 19:39

gswede,

where did you get this cooler?
Maybe you can put a spacer between the bracket and the cooler where you have two bolts on each side if you can raise the cooler little bit without moving the bracket so those fittings won't be hanging like that under the car.

lindy8_man · Post by **lindy8_man** » 16 Jul 2013, 21:45

He used Setrab system, which as far as I can tell has a lot of engeneering into their solutions. Seems like you could find a spot with solid air flow and pick a cooler to fit there! Then if there is no airflow, they have a ducting product to fix that! I went with a standard B&M Supercooler.

http://97.74.32.155/files/setrab$.pdf

Or follow the links from here: http://www.batinc.net/mocal.htm