Transmission Cooler

jetguy · 05-06-2010, 10:37 AM

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

m4a1mustang · 05-06-2010, 11:02 AM

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.

cossie1600 · 05-06-2010, 01:31 PM

It can't hurt

efuseakay · 05-07-2010, 12:24 AM

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.

Zsteve · 05-07-2010, 12:28 AM

Quote:

Originally Posted by cossie1600

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.

SkyZ · 05-07-2010, 01:13 AM

Quote:

Originally Posted by cossie1600

It can't hurt

might overcool it if its not necessary =\. There is an optimal temperature for oil.

cossie1600 · 05-07-2010, 08:54 AM

If you still route it through the radiator, the oil will always be "warm" by the coolant.

1slow370 · 05-08-2010, 12:44 AM

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.

Wonka2581 · 05-11-2013, 03:06 AM

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

Megan370z · 05-11-2013, 08:48 AM

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

XwChriswX · 05-11-2013, 05:49 PM

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?

Megan370z · 05-11-2013, 06:06 PM

Quote:

Originally Posted by XwChriswX

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

XwChriswX · 05-11-2013, 11:30 PM

Quote:

Originally Posted by Megan370z

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.

Megan370z · 05-12-2013, 08:11 AM

Quote:

Originally Posted by XwChriswX

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.

Wonka2581 · 05-23-2013, 08:09 PM

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???

GTM Motorsports*::*AUTOMATIC TRANSMISSION*::*GTM HD TRANSMISSION COOLER FOR VQ

05-06-2010, 10:37 AM	#1 (permalink)
jetguy Enthusiast Member Join Date: Apr 2010 Location: atlanta Posts: 311 Drives: 370z Rep Power: 15	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

05-06-2010, 11:02 AM	#2 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	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. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

05-08-2010, 12:44 AM	#8 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	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. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

05-11-2013, 03:06 AM	#9 (permalink)
Wonka2581 A True Z Fanatic Join Date: Nov 2012 Location: Chattanooga, TN Posts: 3,083 Drives: MY WIFE CRAZY.... Rep Power: 2612	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 __________________ "I have nothing to offer but blood, toil, tears and sweat""Winston Churchill"

05-11-2013, 08:48 AM	#10 (permalink)
Megan370z A True Z Fanatic Join Date: Oct 2009 Location: Canada Posts: 1,156 Drives: 370z Rep Power: 24	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 __________________ Megan Journal Click Me ....................One Man Team Motorsport Click Me

05-06-2010, 01:31 PM	#3 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 30	It can't hurt

05-07-2010, 12:24 AM	#4 (permalink)
efuseakay Enthusiast Member Join Date: Mar 2010 Location: The DAYNGA ZONE! Posts: 404 Drives: 2010 G37xS Sedan Rep Power: 15	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.

05-07-2010, 08:54 AM	#7 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 30	If you still route it through the radiator, the oil will always be "warm" by the coolant.

05-11-2013, 05:49 PM	#11 (permalink)
XwChriswX WFLYIDNNE Join Date: Jul 2009 Location: In The Fastlane Posts: 50,648 Drives: 02 GDB WRX Rep Power: 452	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? __________________ Bonnie - Stage 2, Audio build coming this fall! R.I.P. Abby 3/29/10 - 3/30/14

05-23-2013, 08:09 PM	#15 (permalink)
Wonka2581 A True Z Fanatic Join Date: Nov 2012 Location: Chattanooga, TN Posts: 3,083 Drives: MY WIFE CRAZY.... Rep Power: 2612	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??? GTM Motorsports::AUTOMATIC TRANSMISSION::GTM HD TRANSMISSION COOLER FOR VQ __________________ "I have nothing to offer but blood, toil, tears and sweat""Winston Churchill"

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