How to install transmission cooler

[Chayton]

Hey guys,

I recently purchased an auxiliary transmission cooler to add to my Marauder. I was doing some research on how to install it and am conflicted. I read that some here on the forums install it inline with the factory cooler. But then read an article that said this can cause build up pressure and to just bypass the the factory cooler. I have a 3500 stall and want to keep things cool. What do you suggest?

[RF Overlord]

Always install an aux cooler inline with the factory cooler. The aux cooler should be downstream of the factory cooler, as the factory cooler has a thermostatic bypass to allow the fluid to warm up properly when cold.

Ignore the bad advice you got from "an article". If an aux cooler increases line pressure it's either a crap design or the tubing is undersized for the application.

[Turbov6Bryan]

Go with the largest stack plate design and dont waste a penny on a old tube and fin cooler. Usually 36000 gvwr or larger.

Go from the trans to the radiator, then the extra cooler back to the transmission.

[Chayton]

Thanks guys for the good info!! Much appreciated

[BUCKWHEAT]

Always install an aux cooler inline with the factory cooler. The aux cooler should be downstream of the factory cooler
Please, which of the lines coming from the trans is the up-stream line? I think I may have my external cooler mis-plumbed. Thanks.

[gdmjoe]

BUCKWHEAT - Please, which of the lines coming from the trans is the up-stream line? I think I may have my external cooler mis-plumbed.
*.attachment

[fastblackmerc]

Definitely install in series after the OEM cooler. I've had mine for over 80K with no problems.

[sailsmen]

Are you sure you need one?

[fastblackmerc]

Are you sure you need one?

I believe it can't hurt.

Just like the rear cooling mod.

[BUCKWHEAT]

*.attachment
Thanks. That's just what I needed!

[sailsmen]

I believe it can't hurt.

Just like the rear cooling mod.

Just be carefull that if there is any reduction in airflow over rad it doesn't increase coolant temps.

[fastblackmerc]

Just be carefull that if there is any reduction in airflow over rad it doesn't increase coolant temps.

I'm running a Reisch 170 stat with a MartyO tune modified to Reisch's specs. Consistent temps at 172 as reported by my Scangauge.

[daniel.drives]

Anyone have a part number for one that works? I found a derale 13633 https://derale.com/product-footer/fluid-coolers/transmission/plate-and-fin-sub/13633-detail that I'd like to use, but you cant order from them and Summit says shipping in december.

My trans hit 285 at the last track day, I'd like to....avoid that

[Chayton]

Anyone have a part number for one that works? I found a derale 13633 https://derale.com/product-footer/fluid-coolers/transmission/plate-and-fin-sub/13633-detail that I'd like to use, but you cant order from them and Summit says shipping in december.

My trans hit 285 at the last track day, I'd like to....avoid that

Here’s what I ended up using

https://adtr.net/product/mercury-marauder/drivetrain-mercury-marauder/bm-supercooler-transmission-cooler-11-x-6-x-1-12/


Sent from my iPhone using Tapatalk

[fastblackmerc]

My aux cooler installation

51934

51935

51936

51937

51938

[daniel.drives]

Well, I went with this unit https://www.amazon.com/gp/product/B0060NKA1U/ref=ppx_od_dt_b_asin_title_s00 ?ie=UTF8&psc=1

Installation wasn't bad, I welded bolts to pieces of angle iron and welded those to the front crosspiece of the frame, then used 3 inch bolts with tubes to stand the top off from the core support, just used U nuts in the core support

Temps have consistently dropped 50 degrees, from 180 to 130 on the street, and more importantly, from 280 to 230 on the track. No more changing 7 qts of trans fluid after every event. Came with enough line to do the install, couldn't be happier.

[blazen71]

Put cinch clamps on the hoses if you haven't already. If you lose a line with those worm gear clamps you lose your transmission too.