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ATF Cooler for '13 GS

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Old Feb 25, 2015 | 05:34 PM
  #121  
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Bump. How are those coolers working gentlemen?
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Old Feb 25, 2015 | 07:34 PM
  #122  
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Mine is working fine, even with the FTI 3600 it stays between 185 - 195 in traffic. That's with some really low fan settings that my tuner thinks is necessary to keep the ECTs above 200*.
I'm pretty sure with the fans set a bit higher, I can keep the trans temps down around 180 or so.
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Old Jul 16, 2015 | 06:18 PM
  #123  
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Just an update on my car as I got around to installing a Hayden 679 on her about two weeks ago. On the way to install it at my buddy's house it was 88° and I was cruising at 80mph on the toll way with no traffic problems.

The trans got up to 185° .. On the way home from the install it was 85° and humid outside and I was cruising at the same speeds, only this time the trans was reading 135°. It eventually got up to 153° max while as I exited the highway and went into my development, so it DOES heat up fast, but if I'm moving it cools very very quickly nearly 5° every 10-15 minutes.

The trans was getting up to 201*° while doing spirited driving, I've been out racing and it hasn't gone higher than 185° yet and it's been 104° out.
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Old Jul 17, 2015 | 08:08 PM
  #124  
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IIRC, member HOXXOH reported that trans temps below 140'F produced slightly erratic shifts, as logged in his data recording setup.
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Old Jul 18, 2015 | 09:26 AM
  #125  
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Originally Posted by MBB
Just an update on my car as I got around to installing a Hayden 679 on her about two weeks ago. On the way to install it at my buddy's house it was 88° and I was cruising at 80mph on the toll way with no traffic problems.

The trans got up to 185° .. On the way home from the install it was 85° and humid outside and I was cruising at the same speeds, only this time the trans was reading 135°. It eventually got up to 153° max while as I exited the highway and went into my development, so it DOES heat up fast, but if I'm moving it cools very very quickly nearly 5° every 10-15 minutes.

The trans was getting up to 201*° while doing spirited driving, I've been out racing and it hasn't gone higher than 185° yet and it's been 104° out.
so...is the trans cooler installed in series with the radiator trans cooler or did you bypass it?
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Old Jul 18, 2015 | 10:00 AM
  #126  
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Originally Posted by tennblkc6
so...is the trans cooler installed in series with the radiator trans cooler or did you bypass it?
I don't know how MBB has his, but I can report that I have seen consistently lower temps, around 5-10 degrees cooler, with it bypassed, even with my cooler now being sandwiched between the A/C condenser and the Radiator and with a Magnuson H/X up front. And, it doesn't take long for the ATF temps to get up above 140 degrees either. Nowadays, with some slightly lower fan settings, most of the time it stays between 165-175*, even after a couple of quick blasts. I took a long drive the other day (more than 1 1/2 hrs) and it never got to 180. This Hayden cooler is one of the simplest best bang-for-the-buck mods I've ever done.
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Old Jul 19, 2015 | 01:35 PM
  #127  
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Originally Posted by Gearhead Jim
IIRC, member HOXXOH reported that trans temps below 140'F produced slightly erratic shifts, as logged in his data recording setup.
I use the paddles almost full time.. It never shifts erratically until I get above 210 degrees, then the shifts are sloppy. I installed the cooler after the first time I experienced this.

Originally Posted by tennblkc6
so...is the trans cooler installed in series with the radiator trans cooler or did you bypass it?
It's in series with the rad. The fluid goes to the new cooler and then into the stock rad.

Originally Posted by CI GS
I don't know how MBB has his, but I can report that I have seen consistently lower temps, around 5-10 degrees cooler, with it bypassed, even with my cooler now being sandwiched between the A/C condenser and the Radiator and with a Magnuson H/X up front. And, it doesn't take long for the ATF temps to get up above 140 degrees either. Nowadays, with some slightly lower fan settings, most of the time it stays between 165-175*, even after a couple of quick blasts. I took a long drive the other day (more than 1 1/2 hrs) and it never got to 180. This Hayden cooler is one of the simplest best bang-for-the-buck mods I've ever done.


I run mine right up front since I don't have a blower yet. This is Texas..it's 100 degrees at dawn. My trans is usually already at 90-100 degrees when I start my car up. It gets up to 140 degrees quickly and only cools off while driving.
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Old Jul 21, 2015 | 08:57 AM
  #128  
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Originally Posted by MBB
Report back this summer.. I'm interested in how this will work. I honestly don't think it's a good use of space vs. one cooler with a fan, but if someone isn't going FI it shouldn't be a problem..
My dual hayden setup is still keeping it cool even with the higher ambient heat.

165 seems to be the spot it stabilizes at during hard driving or dealing with a lot of stop and go

In the past the trans fluid would have been way up into the 200s

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Old Jul 21, 2015 | 10:06 AM
  #129  
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Originally Posted by MBB
I use the paddles almost full time.. It never shifts erratically until I get above 210 degrees, then the shifts are sloppy. I installed the cooler after the first time I experienced this.



It's in series with the rad. The fluid goes to the new cooler and then into the stock rad.





I run mine right up front since I don't have a blower yet. This is Texas..it's 100 degrees at dawn. My trans is usually already at 90-100 degrees when I start my car up. It gets up to 140 degrees quickly and only cools off while driving.
That's exactly how I had mine mounted before I installed the supercharger. I also then had mine in series with the stock radiator cooler as well, except that I ran it through the rad first, then to the Hayden cooler. Most people claim it works better that way, which makes sense, since you want your TFTs about 10-20 degrees lower than your ECTs (~170/190).
BTW: We don't have Texas heat down here, but we have pretty consistent "warm" weather (~80s in the "winter" and 95+* in the summer) and a lot of humidity (I don't know if that helps or hurts).
When I installed the supercharger, I was glad to find that the Hayden fit perfectly into the space between the stock radiator and the A/C core, and despite drawing some criticism from others that had it mounted under the right side of the nose of the car (which isn't an option for me, because my H/X pump is in that location) it works better than ever, even with the Hayden alone providing the cooling. Bear in mind that I have 3:42 gears and a 3600 stall converter and there isn't any time that I drive my car that it doesn't go WOT at some point (otherwise, what's the point?). After bumping the fan settings a bit, I haven't seen TFTs any higher than 186, which is the highest I saw the other day in 95 degree weather.
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Old Jul 21, 2015 | 12:49 PM
  #130  
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Originally Posted by MBB
I use the paddles almost full time.. It never shifts erratically until I get above 210 degrees, then the shifts are sloppy. I installed the cooler after the first time I experienced this.



It's in series with the rad. The fluid goes to the new cooler and then into the stock rad.





I run mine right up front since I don't have a blower yet. This is Texas..it's 100 degrees at dawn. My trans is usually already at 90-100 degrees when I start my car up. It gets up to 140 degrees quickly and only cools off while driving.
what's the model and item number for this cooler? did it come as a kit with the fittings? plug and play?
thanks
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Old Jul 21, 2015 | 02:04 PM
  #131  
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Originally Posted by el es tu
My dual hayden setup is still keeping it cool even with the higher ambient heat.

165 seems to be the spot it stabilizes at during hard driving or dealing with a lot of stop and go

In the past the trans fluid would have been way up into the 200s



Originally Posted by CI GS
That's exactly how I had mine mounted before I installed the supercharger. I also then had mine in series with the stock radiator cooler as well, except that I ran it through the rad first, then to the Hayden cooler. Most people claim it works better that way, which makes sense, since you want your TFTs about 10-20 degrees lower than your ECTs (~170/190).
BTW: We don't have Texas heat down here, but we have pretty consistent "warm" weather (~80s in the "winter" and 95+* in the summer) and a lot of humidity (I don't know if that helps or hurts).
When I installed the supercharger, I was glad to find that the Hayden fit perfectly into the space between the stock radiator and the A/C core, and despite drawing some criticism from others that had it mounted under the right side of the nose of the car (which isn't an option for me, because my H/X pump is in that location) it works better than ever, even with the Hayden alone providing the cooling. Bear in mind that I have 3:42 gears and a 3600 stall converter and there isn't any time that I drive my car that it doesn't go WOT at some point (otherwise, what's the point?). After bumping the fan settings a bit, I haven't seen TFTs any higher than 186, which is the highest I saw the other day in 95 degree weather.
it was 106° yesterday and I did a few 120mph pulls on the tollway.. Car never got hotter than 185° and when it hit 185° it cooled back down to 165° while cruising at 80mph (speed limit is 70mph).

Originally Posted by tennblkc6
what's the model and item number for this cooler? did it come as a kit with the fittings? plug and play?
thanks
It's a Hayden 679 unit. It comes with everything you need to do the job right. One thing to note, the fans cut the stock zip tie fittings and the anchor came off. The cooler vibrated and rubbed a hole in the condensor so right now it's at Corvette World having that replaced
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Old Jul 21, 2015 | 05:22 PM
  #132  
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Originally Posted by MBB
the fans cut the stock zip tie fittings and the anchor came off.
any idea how this happened as I would most definitely like to avoid this?
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Old Jul 21, 2015 | 07:20 PM
  #133  
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Originally Posted by tennblkc6
any idea how this happened as I would most definitely like to avoid this?

It was the install...it was our first time doing this and we didn't attach the anchors properly. $460.89 later I am smarter about it.
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Old Jul 21, 2015 | 09:58 PM
  #134  
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Here's a pic of the adjusted unit inside of the bumper:



They fixed the ducting, replaced the shroud, and repositioned the cooler properly. 160° max in stop and go traffic using the paddles on a 104° day. I used to get to 200° in similar conditions.

I sat in my driveway for 5 minutes when I got home and it went down 2° vs. heating up at a stand still like it did stock.
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Old Jul 21, 2015 | 10:31 PM
  #135  
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Originally Posted by MBB
Here's a pic of the adjusted unit inside of the bumper:



They fixed the ducting, replaced the shroud, and repositioned the cooler properly. 160° max in stop and go traffic using the paddles on a 104° day. I used to get to 200° in similar conditions.

I sat in my driveway for 5 minutes when I got home and it went down 2° vs. heating up at a stand still like it did stock.
thanks for sharing. I gotta look but is it possible to install this cooler in this location without removing the bumper cover?
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Old Jul 22, 2015 | 07:43 AM
  #136  
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Originally Posted by tennblkc6
thanks for sharing. I gotta look but is it possible to install this cooler in this location without removing the bumper cover?
If you have a skinny arm/hands, remove the shroud, and have a lift...possibly. My side ducting is cut into to allow for the tubing to run from the rad to the cooler without a kink in the line.
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Old Jul 22, 2015 | 10:51 AM
  #137  
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I wonder if a GS external engine oil cooler couldn't be installed to do the same thing with the added benefit of a solid mount not on the radiator.
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Old Jul 22, 2015 | 01:14 PM
  #138  
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Originally Posted by mikeCsix
I wonder if a GS external engine oil cooler couldn't be installed to do the same thing with the added benefit of a solid mount not on the radiator.
Most folks stick their coolers in the brake ducts.. I don't have the time or the skill for that..nor does it really interest me but it has been done.
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Old Oct 17, 2015 | 09:22 AM
  #139  
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Temp outside is 65°. Trans temp while cruising is 118°. Yep I am glad I didn't bypass the rad.
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