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custom oil cooler bracket installed
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Old 07-06-19, 10:00 AM   #11
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Default Re: custom oil cooler bracket installed

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Originally Posted by dlheman View Post
At least now we know there is no difference between reading at oil pan or at oil sandwich filter.

Afterall Subaru Japan did offer oil tempt sensor kit and that too is installed on the provided oil sandwich plate.
In my mind I’ve believed this from the beginning. Ok if I share your post on the Book of Faces?
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Old 07-06-19, 03:21 PM   #12
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Default Re: custom oil cooler bracket installed

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Originally Posted by Got2Boostit2 View Post
In my mind I’ve believed this from the beginning. Ok if I share your post on the Book of Faces?
Sure, no problem.
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Old 07-06-19, 05:58 PM   #13
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Default Re: custom oil cooler bracket installed

And so I just took the car for a good exercise in the name of science.

Ambient tempt 29 Deg C:

1. Steady state fast cruise can result in oil tempt dipping to 190 Deg f
2. Race the car with acceleration, deceleration, braking and gear shifting the oil tempt stays steady between 200 to 205 deg F.
3. Single pull to 140mph+, oil tempt steady between 200 to 205 Deg F.
4. Normal drive around town, oil tempt betwee 200 to 205 Deg F.

So that is a significant reduction of oil tempt vs not using oil cooler, but not much to be below 200 Deg F. I don’t think I need to cut open the upper grill duct to try to get more air into the pil cooler.

And as previously mentioned the coolant tempt is as good as ever. I didn’t get to see what the coolant tempt was when racing the engine, but during the single pull to 140mph it was at 83 Deg C (note: I also have Dom’s 4th cylinder coolant mod and still on oem radiator).

So after the test I went to get coffee for the morning and I let the car idle with air con on, to see what the oil tempt is like. It gradually decreasing from 205 Deg f all the way to 179 Deg F before settling at around 182 Deg F.

And that concludes this oil cooler project.

Time to go back to race circuit!
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Old 07-07-19, 06:58 PM   #14
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Default Re: custom oil cooler bracket installed

After going through traffic and arriving at shopping mall.



Without oil cooler that fluid temperature (oil tempt) would read 220 deg F.
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Old 07-09-19, 07:39 PM   #15
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Default Re: custom oil cooler bracket installed

Sweet gauges and diag.
I was always curious about the temp difference between a cooler or not and averaging low 200s vs 220-240 i bet thatll help during track daze.
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Old 07-09-19, 09:32 PM   #16
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Default Re: custom oil cooler bracket installed

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Originally Posted by itsm3ming View Post
Sweet gauges and diag.
I was always curious about the temp difference between a cooler or not and averaging low 200s vs 220-240 i bet thatll help during track daze.
Absolutely. The oil cooler helps because prior to converting to R205 Spec C twinscroll turbo I went for a couple of track day with oil cooler installed. The Subaru service guys didn’t believe me that I did track day because others who went without oil cooler always struggled with overheating while I don’t. The engine didn’t even lose oil or coolant and it went for many2 laps until my AD08R and brakes are gone. If I remembered correctly at that time the oil tempt stayed steady at 220 Deg F During track day.
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Old 07-12-19, 03:00 AM   #17
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Default Re: custom oil cooler bracket installed

So a friend bought Mishimoto oil cooler kit; and it don't fit UK model STI due to couple of reasons; the front bumper beam is much deeper towards the air conditioner radiator and there is a thick front lower plastic guard.

But is a good thing as low mounting location is a bad idea in my opinion.

Since the Mishimoto oil cooler is thicker the upper grill duct piece is preventing it from center mount position.



And it is mounted at a slight angle due to clearance (can only be seen if viewed from the top). Which is ok.



That protection sleeve uses sticker to wrap it together, but since I don't trust it a zip tie is recommended.


But there are more problems when installing the sandwich adapter. Due to the shape of the sandwich plate, the OEM water cooled oil cooler adapter pipe will hit the sandwich plate. Thankfully the kit includes another spacer plate adapter which provides the much needed clearance (supposedly to be used when installing on WRX...).

Start the engine, and moments later a leak was detected coming out from spacer plate sensor port. Bastards...


Well by the end of the day the kit is successfully installed - but knowing this the owner would have just piece together a better kit (Setrab core, Mocal plate etc). I also think the rubber gasket on the mishimoto sandwich plate may not be reliable.


Last edited by dlheman; 07-12-19 at 03:08 AM.
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