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Thread: How to install transmission cooler

  1. #1
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    How to install transmission cooler

    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?


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  2. #2
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    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.
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  3. #3
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    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.
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  4. #4
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    Thanks guys for the good info!! Much appreciated


    98 P71 SOLD

    2003 MARAUDER - BLACK ~ Race Car
    2003 MARAUDER - DARK BLUE PEARL ~ DD
    2002 Crown Vic Sport ~ top secret project car

  5. #5
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    Quote Originally Posted by RF Overlord View Post
    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.
    BUCKWHEAT 03 MM 300A-August, '02 mfgr, black w/ blue metallic clearcoat, 94,000 miles, Texid stroker 5.0, #15 Kool-Aide w/ SnakeBite porting, Venom cooling, and upgraded to M122, 3873 of 7839

  6. #6
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    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
    Attached Images Attached Images

  7. #7
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    Definitely install in series after the OEM cooler. I've had mine for over 80K with no problems.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  8. #8
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    Are you sure you need one?
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  9. #9
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    Quote Originally Posted by sailsmen View Post
    Are you sure you need one?
    I believe it can't hurt.

    Just like the rear cooling mod.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  10. #10
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    Quote Originally Posted by gdmjoe View Post
    *.attachment
    Thanks. That's just what I needed!
    BUCKWHEAT 03 MM 300A-August, '02 mfgr, black w/ blue metallic clearcoat, 94,000 miles, Texid stroker 5.0, #15 Kool-Aide w/ SnakeBite porting, Venom cooling, and upgraded to M122, 3873 of 7839

  11. #11
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    Quote Originally Posted by fastblackmerc View Post
    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.
    1/4 Mile Time 11.542 @ 121.19 MPH
    195,000 Miles & 275+ Runs Down the 1,320’
    541.57 RWHP & 476.64 RWTQ on DynoJet
    Tuned by Aric at Injected Engineering
    Vortech Super Charger V-2 “T” Trim, 19 PSI
    8 Rib Belt, Innovators West 10% Overdrive Dampner
    Air to Air Intercooler, Mini-race Bypass
    Ford Cobra Remanufactured Long Block
    Snow Performance Water-Methanol Injection
    Kooks Headers & X Pipe
    GT MAF, 60lb injectors, Dash 8, Aero Rails, Twin Ford GT Pumps,
    Kinsler Fuel Filter, Kenne Bell Boost-A-Pump
    Monroe Sensatrac, Metco Control Arms, Addco Rear Sway Bar
    31 Ford Spline Axles & Detroit Truetrac, 4:10 Ford Racing Gears
    Dynotech MMC Driveshaft
    A-1 Performance Trans, Forced Tailshaft Lube, Carbon Clutches
    3,500 RPM Stall Precision Industries Torque Converter
    B&M Deep Finned Trans Pan
    AeroForce Scan Gauges , Auto Meter Oil, Fuel & Boost Gauges
    Kenny Brown Dead Pedal, 35% Tint, Silver Star Head Lights
    AutoPage Alarm RS-727LCD, Boston Acoustic NX87

  12. #12
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    Quote Originally Posted by sailsmen View Post
    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.
    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




  13. #13
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    Anyone have a part number for one that works? I found a derale 13633 https://derale.com/product-footer/fl...b/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

  14. #14
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    Quote Originally Posted by daniel.drives View Post
    Anyone have a part number for one that works? I found a derale 13633 https://derale.com/product-footer/fl...b/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-mar...11-x-6-x-1-12/


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    98 P71 SOLD

    2003 MARAUDER - BLACK ~ Race Car
    2003 MARAUDER - DARK BLUE PEARL ~ DD
    2002 Crown Vic Sport ~ top secret project car

  15. #15
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    “When you can’t make them see the light, make them feel the heat.”
    Ronald Regan

    "The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
    is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."

    Lt. Colonel Ralph Peters

    “Be polite, be professional, but have a plan to kill everybody you meet.”
    "I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
    General James Mattis




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