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Transmission Cooler

thought i would open a thread for us 7at people that are considering installing an automatic transmission cooler. some of the questions that i have are: is this a necessary

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Old 05-06-2010, 09:37 AM   #1 (permalink)
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Default Transmission Cooler

thought i would open a thread for us 7at people that are considering installing an automatic transmission cooler.

some of the questions that i have are:

is this a necessary modification? do our 7at get too hot?

what is a good kit to go with?

would like to see a diy write up w/ pics

p.s.
i used seach and went through 3 pages with little to no results
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Old 05-06-2010, 10:02 AM   #2 (permalink)
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I have not heard of any issues with the 7AT. No one has really pushed one far enough to its breaking point that we know of.

My guess is you probably only need to consider adding a cooler if you track your car and/or go FI.
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Old 05-06-2010, 12:31 PM   #3 (permalink)
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It can't hurt
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Old 05-06-2010, 11:24 PM   #4 (permalink)
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Depends really on what your plans are for your car. Staying N/A or going F/I? If going F/I, I'd look into a cooler, depending on how much HP/TQ you're aiming for.

From what I've been reading, the 7/AT is pretty darn tough.
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Old 05-06-2010, 11:28 PM   #5 (permalink)
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Quote:
Originally Posted by cossie1600 View Post
It can't hurt
but not needed if not going FI and the more things you put on the more things that can go wrong.

The new M56 infiniti with 400 hp and tq has the same tranny and is fine.
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Old 05-07-2010, 12:13 AM   #6 (permalink)
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Quote:
Originally Posted by cossie1600 View Post
It can't hurt
might overcool it if its not necessary =\. There is an optimal temperature for oil.
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Old 05-07-2010, 07:54 AM   #7 (permalink)
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If you still route it through the radiator, the oil will always be "warm" by the coolant.
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Old 05-07-2010, 11:44 PM   #8 (permalink)
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adding a tranny oil cooler is always a plus on an automatic car modified, driven hard, or not. the reduction in heat extends the life of the transmission seals, clutches, and reduce the stress on the torque convertor and other metal parts. the springs stay stiff longer, and everything just has an easier time doing it's job. Thats why almost any truck you buy with an automatic and a tow package is factory equipped with a large transmission cooler. The cost just isn't justified with most cars because the lifespan of the transmission is figured to be long enough anyway (and nismo would probably want like 800 bucks for one anyway).

A cooler and a valvebody would be the first two things i would have done if i had the automatic, well after the oil cooler.
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Old 05-11-2013, 02:06 AM   #9 (permalink)
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I thought I would bring this thread back to life, Ive been thinking on gitting a tranny cooler for some time now, Any updates to this? Is it worth getting one? or save my $$ for other mods, Thanks
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Old 05-11-2013, 07:48 AM   #10 (permalink)
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all I can say is if you are pushing it hard on the track
the Oil cooler is a MUST
not only you wil have better shift time , but also less lag time when the tranny actualy lock the gear in.
but also make sure you have a thermostatic plate similar to every engine oil cooler setup.
you dont want to run the tranny with a way too cold tranny fluild.
the 7AT generate a lot of heat due to the torque convecter
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Old 05-11-2013, 04:49 PM   #11 (permalink)
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I'm assuming you must make your own taps for feed/return lines on the tranny cooler? And install a pump, considering the unit is a "sealed" transmission, there are no pre-made connection points correct?
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Old 05-11-2013, 05:06 PM   #12 (permalink)
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Quote:
Originally Posted by XwChriswX View Post
I'm assuming you must make your own taps for feed/return lines on the tranny cooler? And install a pump, considering the unit is a "sealed" transmission, there are no pre-made connection points correct?
The 7at does have a factory oil cooler that is within the coolant radiator. You can use those line. No need to drill and tap new connection
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Old 05-11-2013, 10:30 PM   #13 (permalink)
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Quote:
Originally Posted by Megan370z View Post
The 7at does have a factory oil cooler that is within the coolant radiator. You can use those line. No need to drill and tap new connection
Ah, interesting. Was not aware of this. Gotta find out where those hoses are routed then next time its on jacks.

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Old 05-12-2013, 07:11 AM   #14 (permalink)
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Quote:
Originally Posted by XwChriswX View Post
Ah, interesting. Was not aware of this. Gotta find out where those hoses are routed then next time its on jacks.

the tranny fluid goes on the driver side of the coolant radiator.
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Old 05-23-2013, 07:09 PM   #15 (permalink)
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Ok I need to know I live in TN, and the winers can get cold. Would this be over kill for a Street car with a occasional track day???

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