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Old 09-18-2013, 10:47 PM   #1
Kostamojen
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Exclamation Forester XT 2.0 DIT Factory Oil Cooler on the BRZ

I've been working on this over on FT86 but I figure I'll add it here too...

BRZ owners are experiencing high oil temps in racing conditions, upwards of 290 degrees. Oil coolers are a good idea for this car, but what about simple options?

The Forester 2.0 DIT engine has an oil cooler designed for the top mount oil filter FA/FB engines.

Part Number 21311AA170 - List Price $180, www.subaruparts.com has it for $143

Photo of it:



Of course the first thing that was on my mind was "Will this work on the BRZ?" and then I discovered Cusco just repackages a OEM cooler for their oil cooler kit and was like well ya, this would be an option then.

Only question is how to route the coolant lines...

Diagram of the DIT coolant lines:



BRZ coolant diagrams:



How the coolant routes on the car:




My "early" idea for how to do this:



Some people on FT86 were saying "well thats more of an oil warmer than oil cooler" and as most of us here know, its both. Warms the oil quicker to operating temps, and cools it from super high temps due to coolant temps being around 190 while the oil is much higher.

So I think this is a good, simple idea that probably should be implemented from the factory, but we will see...
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Old 09-18-2013, 11:13 PM   #2
FearBoy
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I like this idea. The other one I like is the Robispec cooler combo. Air to oil coolers don't necessarily maintain oil operating temp.
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Old 10-31-2013, 06:42 PM   #3
Kostamojen
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Instructions on how to install this using factory parts, enjoy

http://www.ft86club.com/forums/showthread.php?t=50427
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Old 10-31-2013, 07:05 PM   #4
carnz-pj-410
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I was just about to post my DIY here, thanks for linking it over lol
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Old 10-31-2013, 08:15 PM   #5
chanomatik
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I didn't quite realize the everyday use of this until I saw you noted quicker temp rise. Definitely going to look into this and continue watching your progress. Thanks!
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Old 10-31-2013, 11:12 PM   #6
Kostamojen
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Quote:
Originally Posted by carnz-pj-410 View Post
I was just about to post my DIY here, thanks for linking it over lol
welcome
Quote:
Originally Posted by chanomatik View Post
I didn't quite realize the everyday use of this until I saw you noted quicker temp rise. Definitely going to look into this and continue watching your progress. Thanks!
Carz thread is basically the same, you can usenitnfor reference
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Old 11-01-2013, 12:22 PM   #7
chanomatik
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Well... yeah. I thought that was implied? I wouldn't use this thread since there's just the fruition of an idea here, whilst the other thread contains the actual execution.
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Old 11-07-2013, 07:09 PM   #8
Kostamojen
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Waiting on just one more part before the install...



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Old 11-07-2013, 07:43 PM   #9
chanomatik
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This is hotness status.
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Old 11-07-2013, 11:48 PM   #10
Jive Turkey
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i wonder if this is worth it over an aftermarket cooler...i do need one for next season.
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Old 11-08-2013, 01:03 AM   #11
Kostamojen
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Quote:
Originally Posted by Jive Turkey View Post
i wonder if this is worth it over an aftermarket cooler...i do need one for next season.
Air-Oil coolers are risky because you are creating new oil lines and they can over-cool the oil from a cold start (ie takes longer to warm up the oil).

Cusco repackaged an oem oil cooler just like this for their kit and charge 3x as much!!!

Your choice, but there is good reason we have seen this oil cooler on Subarus for 20 years now... they work.
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Old 11-14-2013, 10:32 PM   #12
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Looks like the wrx is going to get one of these as well...

http://forums.nasioc.com/forums/show...&postcount=861
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Old 04-21-2014, 01:28 AM   #13
Kostamojen
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Put together a video showing the before and after oil temperatures with this install to prove some of the skeptics out there wrong:

https://www.youtube.com/watch?v=VnGKGTCsca8

I have the original videos too if anyone needs them. But basically the same road under the same conditions (same temperature outside) saw a drop in 15-20 degrees from the peak oil temps!!! Thats hugely significant.
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Old 05-02-2014, 09:41 AM   #14
Sharky NRK
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very cool, thanks for sharing
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Old 06-20-2014, 06:03 PM   #15
white BugEyed 02
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This is so helpful, many thanks! Should be be installed from the factory, like it is for the forester and new WRX.
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