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Old 06-05-2002, 11:24 AM   #1
newbie sewbie
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Default oil cooler mounting location

has anyone installed an additional oil cooler to their wrx? if so, where did you install it?

any suggestion?
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Old 06-05-2002, 11:45 AM   #2
wRx14pSi
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SUbaru in japan has it installed just to the left of the liscense plate.

As for people with FMIC, then i guess under the hood scoop would be a good place.
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Old 06-05-2002, 12:29 PM   #3
GDB
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The yellow prototype STi has an oil cooler mounted just underneath and to the left of the license plate like wrx14psi has said.

Most if not all of the STi buddies I know install it in that general area; somewhere in front of the radiator.

However, the most optimal place is IMHO in one of the fenders, preferably on the left (driver's side for the US) fender. Why?

1) By having it there, it doesn't block the airflow to the radiator.

2) There's ample space there to even put a fan behind the cooler, connected by relay to the radiator fans, so even when you're in a standstill (or stop and go traffic) your oil temp won't rise as rapidly.

3) You can/should optimally take out the foglight to provide direct ram-air onto the oil cooler. Then install a DIY fogmesh or one of those original STi ones to prevent stones from destroying it (remember if you have it in front of the radiator, it'll be more prone to being hit by stone chips).

And finally, why on the left fender? Because the right fender can be used to either house an AEM or a DIY ram-air tube feeding air straight onto the stock airbox.

For best results, also run a spray onto the oil cooler connected to the IC cooler (if you already have one).

Nothing is too extreme when it comes to oil cooling, especially in hot climates and if you do a lot of track days.

I think oil coolers in general aren't a popular mod in the States because most WRX owners there don't do track days and the weather is generally kind to the engine.

I haven't seen anyone install an oil cooler in the hood scoop. On the move, that place will be ideal, but I'm not sure if it's worth the heat soak that can easily set in while the car is stationary. The heat soak might even increase the oil temp unnecessarily (???) who knows...

So... any particular oil cooler you have in mind? Do aim for having at least a 14-row cooler.
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Old 06-05-2002, 01:31 PM   #4
newbie sewbie
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thanx for the reply, seems to be an agreement that the left half of the vehicle is where it'll be at....i'm looking into using something from perma-cool...probably their 101

i figure since the wrx already has an oil cooler, this will just be a supplement.....but it's still a pretty good size 1.5X7X14 in.

perma-cool even has kits where you can hook up their accessory fan to the cooler....they have a good line of product

Last edited by newbie sewbie; 06-05-2002 at 01:41 PM.
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Old 06-05-2002, 02:42 PM   #5
Zahnster
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Put together a list of parts and a guide and you've got a certified mod. You could even sell it as a kit.
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Old 06-05-2002, 05:15 PM   #6
cdigerlando
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Default GDB's Post.=

Good Post GDB! I agree with everything you just said. This is the exact location I was thinking of for my SVX oil cooler.
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Old 06-05-2002, 10:07 PM   #7
GDB
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Quote:
Originally posted by newbie sewbie
...i figure since the wrx already has an oil cooler...
GASP!!!

Are you SURE about that?????

The JDM WRX and STis all do NOT have oil cooler standard. I'm 10,000% sure about this.

Evos have oil coolers standard, even though their units are puny and can hardly stand up to track use.

But hey, I may be wrong because I mainly work on STis...

Anyone else can chip in his/her 2 cents here???
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Old 06-05-2002, 10:58 PM   #8
WRX Ver.7
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I am also pretty sure that the WRX does not have a oil cooler. If there is a chance that they do, than it could be a real pain in the a$$ to put my GReddy 10 row oil cooler in. I am planning on putting it in the left inner fender area and fabricating a ram from the lower spoiler duct to the cooler. As well as putting a fan on it.
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Old 06-05-2002, 11:17 PM   #9
cdigerlando
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Default oil cooler

I have been told by mechanics at my dealer....and others on the website that it does have an oil cooler. It is "cooled" by coolant. Liquid/liquid. In my opinion it does not work well. My oil goes fast....and since I use amsoil synthetic it is getting expensive. This car would definitely benifit from an air/oil cooler.
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Old 06-06-2002, 12:36 AM   #10
newbie sewbie
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Default Re: oil cooler

Quote:
Originally posted by cdigerlando
I have been told by mechanics at my dealer....and others on the website that it does have an oil cooler. It is "cooled" by coolant. Liquid/liquid. In my opinion it does not work well. My oil goes fast....and since I use amsoil synthetic it is getting expensive. This car would definitely benifit from an air/oil cooler.
i second that........didn't mean to miss lead, it is the not radiator fin type

Last edited by newbie sewbie; 06-06-2002 at 11:29 AM.
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Old 06-06-2002, 02:00 AM   #11
hotrod
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Default US WRX stock oil cooler

The US WRX stock oil cooler is a small water /oil heat exchanger that sits directly above the oil filter. This has the advantage that it will not over cool the oil as can happen with air/oil coolers.

Larry
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Old 06-06-2002, 02:17 AM   #12
GDB
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Alright thanks for the clarification

Next time I'm at my workshop, I'll try to look for it on other WRXs.

Is this type of oil cooler common among other cars, or is the WRX one of only few that has it standard?
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Old 06-09-2002, 10:43 PM   #13
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The 'coolant' oil cooler seems to be on a lot of newer cars. I think all Hondas have them. I think it is adequate for normal use. But for any heavy driving, the air cooled oil cooler seems the better route.

Similar to towing packages on trucks, etc, that have an tranny fluid cooler. They help A LOT under load.
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