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Old July 13th, 2015, 03:31 AM   #1
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5AT fluid cooler

I've been putting off most mods that I contemplate since I think I finally decided on a low boost turbo build WITH the 5at. So no exhaust for me, yet. But I'm going to start preparing for the turbo little by little. It's time for me to do a atf 3x drain and fill so I figured I'd install a cooler while I was at it. If anyone has a link for the "easiest to install" cooler let me know. I just don't want to buy the wrong part. Already bought a new filter, and all seals / washers. Also, is there an easier way to do the cooler install than what av6 posted about where he modified that whole metal piece? (http://www.v6performance.net/forums/...placement.html)

Also one more side question, will removing the engine coolant heat exchanged from the transmission case as demonstrated in av6's thread cause a "warming up" issue? I just thought that if the transmission is shifting cold from a startup it might not be good. Basically what I'm asking is "Is the heat exchanged needed to warm up the tranny fluid from a cold start?"
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Old July 13th, 2015, 09:55 AM   #2
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Depends on what the ambient air temp is. I see you live in AZ so prob not an issue. If you are worried about it you can install a thermostat to close the loop until you reach desired temps just like your cooling system works. Pretty sure Summit Racing will have what you need.
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Old July 13th, 2015, 11:17 PM   #3
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Looked on summit, didn't see anything. Can anyone confirm that not warming up the transmission fluid from a cold start is damaging?
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Old July 14th, 2015, 11:15 AM   #4
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http://www.summitracing.com/parts/de...NcXhoCNPrw_wcB

You can shop by inlet/outlet sizes and operating temp as well.
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Old July 14th, 2015, 11:27 AM   #5
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buy this one and be done with it. It has a bypass for those extra cold winter days in AZ

Amazon.com: B&M 70264 SuperCooler Automatic Transmission Cooler: Automotive
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Old July 14th, 2015, 01:47 PM   #6
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also put in one of this

Amazon.com: Magnefine Inline Magnetic Automatic Transmission Filter 3/8": Automotive
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Old July 14th, 2015, 03:25 PM   #7
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Is the extra filter necessary if I regularly change the oem filter?
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Old July 14th, 2015, 03:30 PM   #8
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Its much easier to change the inline filter instead of farting around with the OEM one. But no, it isn't necessary but highly recommended. Magnefine will also filter out metal particulates and trap them so your stock filter doesn't have to work as hard. So if you're already doing this project you might as well add the in line filter.
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Old July 14th, 2015, 06:46 PM   #9
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This is the cooler I have on the way right now, would that inline filter fit?
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Old July 14th, 2015, 07:13 PM   #10
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it would fit regardless. the hose should all be similar
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Old July 15th, 2015, 12:26 AM   #11
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Is there an easier way to tap into the ATF line without doing the whole thing with the heat exchanger? Honestly not that paranoid about looks as much as paul was in his thread.

Also, does the tranny fluid run thru the radiator at all? Or is there some ****ty metal pipe cooler style thing like the power steering "cooler" infront of the radiator.

Last edited by Strath; July 15th, 2015 at 01:33 AM..
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Old July 16th, 2015, 02:17 AM   #12
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How much to put one in Ken?
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Old July 16th, 2015, 05:51 AM   #13
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How much to put one in Ken?
50 bucks labor. Also would be a hood time to do a 3x3 tranney flush
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Old July 16th, 2015, 08:34 PM   #14
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theres a section of rubber hose you can tap into under the fuse box. Some models also pass the fluid through the radiator in additional hoses, mine didn't, but if you have those it's an easy tap.

Flush is a good idea, custom FM fluid while controversial has improved my life/abilities thus far. Magnefine is a good idea. While you're in there a temperature sensor is good to add even if you can't get a gauge in right now, as adding it after is a hassle and messy.

ATF sucks to work with when pulling lines as it's very corrosive and will eat your skin a half hour before you realize, do it once, do it right, batten down the tubes and lines, secure the cooler, keep the filter easy to access, and the sensor easy to wire. <$100 for all of the above and tube and install equipment, and gives you knowledge that your system is safe, and how safe it is.

AFR gauges keep boosted systems safe, ATF gauges keep automatics safe.
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Old July 16th, 2015, 10:18 PM   #15
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What's the install procedure for the temp sensor? I was already looking into this, but didn't have enough info to order the parts with this batch of goodies.
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Old July 16th, 2015, 10:32 PM   #16
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What's the install procedure for the temp sensor? I was already looking into this, but didn't have enough info to order the parts with this batch of goodies.
No idea. There are some inline sensors that you can snip in similar to the magnefine filter. Wiring past that all depends on the sensor, depending on the sensor it could even be a mechanical/analog "wire"

I would try to find a 3/8" inline oil temp sensor or dedicated ATF sensor due to its corrosive properties.
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Old July 17th, 2015, 03:03 PM   #17
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Got all the parts together today. Gonna be doing this in a few hours. Is jacking up the front end and putting it in gear necessary to bleed air? As Paul said in his thread? Also, where tf is the fill bolt.
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Old July 17th, 2015, 06:08 PM   #18
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I just use the dipstick hole, like every other guy.
There's a 17mm fill hole somewhere, might be easier to find visually as it's usually marked
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Old July 17th, 2015, 06:23 PM   #19
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make sure you can get the fill bolt out first. Then drain
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Old July 17th, 2015, 08:24 PM   #20
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make sure you can get the fill bolt out first. Then drain
or are able to make a doohickey to funnel very slowly into the level check tube
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Old July 18th, 2015, 11:13 AM   #21
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Did a flush last night. Does anyone know if the hose coming out of the fill bolt is the one I should use to tap? It doesn't seem like pressurized atf runs thru it since it just sits at the top of the bolt.
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Old July 18th, 2015, 09:44 PM   #22
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Tap? You shouldn't need a tap. Why are you tapping?
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Old July 18th, 2015, 09:47 PM   #23
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By tap I mean route the cooler thru it.
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Old July 19th, 2015, 03:13 AM   #24
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Will it work or nah? Anyone?
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Old July 19th, 2015, 06:23 PM   #25
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I would find some pictures from the thread that has been sourced to be a resource for knowing which line to tap. Otherwise either post up pics, or undo the line you think will work, and crank over the engine a few times and see if there's ATF everywhere. If there is it should work.

Is there a line that goes to your radiator?
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Old July 20th, 2015, 07:13 AM   #26
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Will it work or nah? Anyone?
I don't mean to insult you but, it doesn't sound like you are at the skill level you should be at to attempt this. I have a write up on the 3x3FF and in that I linked Paul's write up for the cooler install. I would recommend doing what Paul did. If I recall correctly there aren't external lines to tap into aside from the ones on the heat exchanger. It isn't a hard job but you can F it up if you don't follow the right procedure.
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Old July 20th, 2015, 01:46 PM   #27
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Finished the cooler install last night. Spent 3 hours trying to change the filter. No luck. Gonna have to get some clamps for the coolant hoses. As far as the cooler goes I used the lines next to the fuse box, routed them under the metal battery holder and into the front of the radiator where my cooler is mounted. Added an extra 3/4qt atf and all is good right now. Been about 50 miles no problems. Doing a second flush today, and a third when I get a day off, hopefully can change the filter while I'm at it.
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Old August 25th, 2015, 10:10 PM   #28
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FYI - This might be of interest. Especially if you are trying to accurately monitor ATF temperature.

TransCooler.html


FYI: Here is a direct link to Reading the OEM ATF sump temperature sensor using a $20 Digital Volt meter.

OEMATFsensor.html

A direct Link to 5AT Cooler testing Recap: CoolerRecap.html
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Last edited by Mczgl; August 26th, 2015 at 12:05 AM..
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Old August 25th, 2015, 11:34 PM   #29
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FYI - This might be of interest. Especially if you are trying to accurately monitor ATF temperature.

TransCooler.html


FYI: Here is a direct link to Reading the OEM ATF sump temperature sensor using a $20 Digital Volt meter.

OEMATFsensor.html
Crap, 404 on the atf temp readings.
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Old August 26th, 2015, 12:08 AM   #30
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Crap, 404 on the atf temp readings.
Hi, I just tried it from the links and worked for me?
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