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Old 04-21-2004, 08:35 AM   #1
dcoty
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Default Need an oil cooler for my car...help please!

Hey guys,
it seems that I need an oil cooler for my car to be on the safe side when i track it, the only problem is...I dont know where to start for this one.

Does anyone know a place that sells an oil cooler kit or a place that could scource all the parts? Any suggestions welcome!

Dan
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Old 04-21-2004, 09:12 AM   #2
Opie
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Get the oil cooler setup from a '91 Legacy Turbo, you'll need: Water pump, Oil Cooler and a few hoses and things all from a '91 EJ22t but it will be a fairly easy and effective install.

Here's a pic to give you an idea of what it looks like:


The oil cooler attaches where the oil filter goes (oil filter then attached below the cooler), the line around the front of the block provides the coolant flow from the water pump that has a hose outlet on the left for this setup. There is also a hose that comes out of the back of the cooler and you'll need the nipple that screws into the block to attach to complete the coolant flow.
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Old 04-21-2004, 10:13 AM   #3
YaZahX
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look in the forester accessories manual from the gen1's

(that will help u avoid needing the water bump)
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Old 04-21-2004, 11:29 AM   #4
Tim Sanderson
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You can buy the oil cooler kits from dealers that are made for your car.
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Old 04-21-2004, 11:49 AM   #5
dcoty
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Thanks guys, I was looking for an air to oil thermostat regualted oil cooler and I found out that they come on the STi's (according to the place). The responses were super helpful! I was just looking for personal opinions on setups and how people liked them.
Opie- Thanks for the pic and details, it helped me out, also it helps for the install a bit too.
Thanks guys!
Dan
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Old 04-21-2004, 12:50 PM   #6
Robin2
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Dcoty,

One of our Ottawa members was selling an STI one... that was on Ver7 engine.... (till he sold the engine).....

He had posted:
front mount oil cooler 17" x 5" x 1.5", came with adaptors and hoses, average 20 to 30 degree lower than stock oil temp

I'm not sure if it's still for sale but he was asking $300....

Here's a pic:


Robin
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Old 04-21-2004, 01:17 PM   #7
Matt Monson
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That is a very trick set up.
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Old 04-21-2004, 03:02 PM   #8
Section 8
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Get a MOCAL thermostat, put lines from where you decide where you want to draw oil from (sandwhich adapters are good for this), and use an external cooler. I wouldn't use the engine's cooling capasity to also cool the oil, particularly one where RPMs are elevated (more engine speed is more friction, thus more heat). THe cooler the coolant going into the engine keeps vapor blanketing to a minimum. It usually helps to know your oil temperature beforehand to determine the correct size core for cooling. If you get on that is to big, your thermostat will be opening and closing sending over cooled oil back to the engine on ocasion, and one that is to small your temp will not drop enough.

It is better to get one that is a *little* to big rather than to small. You can always block a portion of the cooler to reduce effectivness, or reduce the ammount of frontal area by turning it to an angle instead of directly facing the airflow. Trying to increase the efectivness of a cooler to small is futile. Of course larger coolers are more expensive. You do not have to purchas an Earls cooler, or Aeromotive ect, there are plently of other brands that are less expensive that cool well. You may need a slightly larger cheaper cooler, but they generally weigh the same or less, and you won't feel so bad when it eats a rock or 10.

cheeRS,

Greg
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Old 04-22-2004, 03:47 AM   #9
Patrick Olsen
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I have a Mocal cooler and sandwich adapter (with built-in thermostat) on my Mustang. The car has not seen track time yet, but I consulted with a couple of shops to figure out which size to go with. Based on their recommendations, I went with a 25-row 235mm wide Mocal cooler. We shall see if that's sufficient. This is on a naturally aspirated 357ci (iron block, aluminum heads) that should put down around 450hp (mmmmmm, cubic inches....), so that gives you an idea of cooler sizing. The guy who built the engine and did most of my Mustang's set up for me didn't think the cooler would be big enough, but I've talked to guys running similar combos that have no problems, soooo....

Try talking to the guys at www.batinc.net - they were pretty helpful when it came to questions about sizing the cooler.

I'm not sure they make one for Subaru fitment, but Mocal makes a couple sandwich adapters with the thermostat built in. Makes hose routing a helluva lot easier (and cheaper - fewer hose ends to buy). BAT, Inc's website didn't show the sandwich adapter I bought, but it is available.

Pat Olsen
'97 Legacy 2.5GT sedan

PS - A significant portion of your cooler budget will be good braided lines and hose ends. It adds up pretty quick. On the Mustang I use -10AN hose - the smaller Subie motor could probably get away with -8AN. For a track car, braided lines are a must, so don't cheap out on "normal" rubber lines. Most of the "universal" oil cooler kits (like you would find from Summit, Jegs, JC Whitney) use rubber lines, not braided stuff. You don't want to endanger yourself or someone else on track by having a rubber oil hose rupture on track.
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Old 04-22-2004, 01:31 PM   #10
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beware.....I had an OEM subaru oil cooler off of a forester. The problem was the oil cooler drops the filter 5-7 inches lower so now the filter was sitting .001cm's away from the header. I had the borla header wrapped and it worked fine, but you couldnt unscrew the filter. I took off all the wrap so I could change my oil without any problems and the heat generated from the header would melt the oil filter (defeating the purpose of the oil cooler) after 2000 or so miles.So I just returned it back to the stock filter. I have everything sitting in my room at home if you want to buy it. I wont be able to ship it till after may 7 though (I'm at college)
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Old 04-22-2004, 05:55 PM   #11
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I may be interested in buying your kit, how much do you want for it?
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Old 04-22-2004, 06:43 PM   #12
dcoty
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Wow, tons of helpful replys, thanks guys!

Robin- I might be getting one of a V8 STi, but if it falls through, il look into the one you mentioned, thanks for including the pics too.

Austin- You dont think i should go with an OEM one? Sounds like yours was pretty problematic (enough to switch back to stock). Im going to ask about that placement, thanks for the heads up.

Really appreciated everyone!

Dan
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Old 04-22-2004, 09:19 PM   #13
Matt Monson
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Austin,
Which headers do you have on your car? I ask because it will make a difference. My Cobb headers don't even come close to the oil filter, so OEM may be an option for me as my build progresses to this point...
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Old 04-22-2004, 11:30 PM   #14
Robin2
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No prob...... I was going to buy it for our rally team (Evo4) but it doesn't have the same fittings.... and it's $300CDN....

Robin
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Old 04-23-2004, 12:59 AM   #15
kaos200
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where can you get the mocal parts?
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Old 04-23-2004, 11:12 AM   #16
AustinSTi
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I have a 4th gen. Borla Header
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Old 04-23-2004, 02:21 PM   #17
Matt Monson
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Quote:
Originally posted by kaos200
where can you get the mocal parts?
Try JEGS or one of the other muscle car mail order houses...
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Old 04-23-2004, 02:39 PM   #18
Section 8
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THese guys have good proces:

Clicky

cheeRS,

Greg
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Old 04-24-2004, 01:49 PM   #19
kaos200
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20*1.5 thread right?
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Old 04-25-2004, 11:45 AM   #20
AJ711
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Yes, that is the correct thread pattern.
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Old 04-27-2004, 02:52 PM   #21
powerlabs
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Dcoty;

They sell 3 different oil cooler kits on this page:
http://home.att.net/~teaguesauto/motor.htm
I like the genuine Subaru kit; it seems nice and compact. I don't see why I would need one though
Hope this helps.
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Old 04-27-2004, 03:06 PM   #22
kaos200
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I just ordered an adaptor and the cooler, and Ill make my own lines.
I promised myself after the last track day this would be my next mod after seeing my oil temps go higher then Ive ever seen them! (Although still in safe range)
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Old 04-27-2004, 03:52 PM   #23
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I believe rallispec used to make a kit, i have it on my RS. If you're interested Dcoty I can take some pics and you're welcome to buy it.
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Old 04-28-2004, 02:47 AM   #24
dcoty
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Ill let you know, thanks, Ill see if my place up here has one, if they dont then ill send you a PM. Thanks!

Powerlabs- good link, saved it! Thanks.

Dan
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Old 04-28-2004, 02:54 AM   #25
kaos200
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I just realized, the adaptor may hit the damn header
anyone have the mocal adaptor without trouble?
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