Trans cooler in series?
#1489813
08/24/13 06:58 AM
08/24/13 06:58 AM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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I bought a 3/4" thick Permanent-cool trans cooler. The instructions say it must be installed in series with the radiator. They do not want the radiator by-passed. I bought a 15 x 7 cooler and planned on installing it between the A/C condensor and the radiator. I would think the size and location of the cooler would work better by-passing the radiator. So, why do they want the fluid running through the radiator and cooler?
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring ‘14 Big Horn, Quad Cab, 4x4, 1500
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Re: Trans cooler in series?
[Re: feets]
#1489823
08/25/13 11:37 AM
08/25/13 11:37 AM
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Joined: Jan 2003
Posts: 12,187 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,187
Benton, IL.
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Anytime I have ran a large tranny cooler, I have thought that the tranny took a long time to come up to temp and ran a little cool unless I was flogging it. I even picked up an engine oil thermostat to plumb in the lines, but the bypass was so large that the cooler got full flow all the time.
So, I just run a smaller tranny cooler now. But it is slow to bring the temps down when I am beating on the car.
Other than the tranny coolers with fans and temp switches to trigger the fan, is there any such thing as a thermostat for our tranny cooler lines? Seems that would make sense. Bring the temp down quick or not let it get too high to begin with, while not running the tranny too cool under light loads. Would bring it up to temp quicker, too.
Obviously a street/strip application.
Master, again and still
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Re: Trans cooler in series?
[Re: Supercuda]
#1489825
08/25/13 12:12 PM
08/25/13 12:12 PM
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Joined: Jan 2003
Posts: 12,187 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,187
Benton, IL.
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Exactly what I have been looking for. Thank you!
Has anyone ran this? Worth the trouble?
Master, again and still
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Re: Trans cooler in series?
[Re: dfsmopars]
#1489827
08/25/13 03:52 PM
08/25/13 03:52 PM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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OK, I think the first bit of business is to buy a B&M gauge kit from Summit and just see where the trans is right now, what happens when the converter is in and go from there.
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring ‘14 Big Horn, Quad Cab, 4x4, 1500
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Re: Trans cooler in series?
[Re: John_Kunkel]
#1489830
08/25/13 06:44 PM
08/25/13 06:44 PM
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Joined: Aug 2003
Posts: 43,237 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,237
Bend,OR USA
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Quote:
Quote:
If the trans was acting up when cold & straightened out when hot or if I became convinced that cold fluid was shortening its life over the long run but if using the rad cooler for the heat benefit is the way to go I will go with that as you are the man
Ask any fluid supplier and they'll tell you that the ideal minimum fluid temperature is 160°F...there is zero benefit to running it any cooler.
I had a Cyberdyne digital trans temperature guage on my 1998 CTD 2500 Ram with the towing package, the tranny temps. never exceeded 130 F, normally cooler than that , when not towing, summer or winter in the Mojave deserts It would get up to 220 F when towing up a long grade(18 mile long Baker grade going to Las Vegas) at 70 MPH with the enclosed car trailer loaded to 8200 Lbs with the race car in it, I would lock it out of overdrive at the bottom of the hill and unlocked once it went over the top of the grade The tranny temps would go back down to 160 F in around five miles of coasting down that hill or on the flats when towing in the summer heat, 117 F outside air temps at 3.00 PM in Baker,CA in July and August
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Trans cooler in series?
[Re: Cab_Burge]
#1489832
08/25/13 07:12 PM
08/25/13 07:12 PM
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Joined: Feb 2006
Posts: 2,262 Groveland, MA
SteveS
top fuel
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top fuel
Joined: Feb 2006
Posts: 2,262
Groveland, MA
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When Ford started separating all of their transmission coolers, and making them completely independent of engine cooling, they added thermostatic bypasses to them. Depending on the platform, they can be within the cooler, inside the transmission, or in a block in between. As an example, ALL '98-up Panther platform cars (Crown Vic, Grand Marquis, Town Car) had a separate cooler with a 180°F thermostat and a bypass within the cooler. The same cooler assembly also housed the power steering cooling circuit.
The went to the added expense of the thermostatic control both for cold weather drivability and for transmission longevity.
At any rate, they are great coolers, and there are a gazillion of them in junkyards everywhere.
Steve
Someday I'll have another C-body.
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