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Old 02-26-2004, 01:35 AM   #1
BIGSKYWRX
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Default Has anyone packaged together a oil cooler kit for the WRX?

The only package I've seen is the STI one, haven't hit the powerball so that one is out

I'd need one w/ a thermostat in it (gets cold up this away) so I can get my oil up to temp.

If anyone has seen one one or can reccomend one it would be appreciated.

TIA

Big Sky
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Old 02-26-2004, 01:45 AM   #2
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http://www.subydude.com/parts/details.php?229

You missed one of the best vendors on nasioc! they also sell the sti oil cooler, but its a good ten fold pricewise on that fmoc.

Hope that helps.
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Old 02-26-2004, 01:53 AM   #3
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Quote:
Originally posted by LotusDrift
http://www.subydude.com/parts/details.php?229

You missed one of the best vendors on nasioc! they also sell the sti oil cooler, but its a good ten fold pricewise on that fmoc.

Hope that helps.
There's no oil thermostat included in that kit.

If you want to piece together one, racerpartswholesale.com has the inline type and sandwich adapter type oil thermostats. When I was looking at this stuff a while back, there were a few key points that aren't so obvious.

First with the sandwich adapter type, one person has confirmed to me that you need to keep the stock heat exchanger installed because if you remove it and just install the sandwich adapter the fittings are blocked by the exhaust manifold. So if you have the stock heat exchanger and the sandwich adapter, you'll be lowering your oil filter about 1-1.5" closer to the ground. They might have better sandwich adapters that let you rotate the fitting orientation but I haven't ran across one yet.

Also most oil filter relocation kits don't reuse the m20 x 1.5 threading just a FYI. So if you have a stack of oem filters, you won't be able to use them anymore.

The cooling cores aren't that expensive, it's the lines and fittings that add up. Rubber, steel braided, socketless, and don't forget the size of the lines you are using. IIRC I've been told by many people to go no smaller than -8 AN (or 0.44" inner diameter).

Last edited by tdxflex; 02-26-2004 at 02:04 AM.
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Old 02-26-2004, 02:10 AM   #4
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Thanks for the tips- don't need my filter any lower. Also have a case of oem filters.

Frankly I think there would be demand for such a kit- addressing the problems pointed out. I can't imagine a well put together kit being too much over $300.

$1800 for the STi one is amazing- and not in the good way.

Big Sky
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Old 02-26-2004, 03:25 AM   #5
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Default stock cooler

You realize the WRX has a built in oil to water cooler from the factory, that moderates the oil temp with the coolant water?

It sits directly above the oil filter. Unless you doing some heavy long distance speed runs (who would do that in MT?? ) you probably don't need much more than to switch to a 160 thermostat like Crucial Racing has during the summer time.

That's what I do here in Colorado, I switch to a 15% antifreeze and 160 thermostat in the summer and go back to 50/50 antifreeze and the stock thermostat in the winter.

Larry
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Old 02-26-2004, 03:43 AM   #6
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yeah in my opinion, cutting down how much glycol you use (25%antifreeze/75% water) and using a cooler stat is the way to go. . .
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Old 02-26-2004, 04:27 AM   #7
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HMMMMM thank god for wreck RX-7 FCs!!!
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Old 02-26-2004, 11:04 AM   #8
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Yeah no long distance speed runs here , but was thinking more for track days.

I like the oem "cooler", particularily getting to temp quicker (handy here in the northern climes). I really didn't know how effective it was in hot conditions- maybe it's much better than I thought.

I assume w/ the STi type setup you lose the oem water-> oil cooler?

I'll cut back om my antifreeze- that's a good tip. Lower thermostat is a good idea.
Unfortunately (?) my oem radiator is crapping out on me- small seepage at upper seam, so a upgraded radiator is probably in the works as well.

I still think there would be a market for a well thought out oil cooler kit- ie thermo statted, correct filter fitting, locating brackets, etc.

Thanks for all the input.

Mike
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Old 02-26-2004, 12:55 PM   #9
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Default oil cooler is not a bad idea

If your planning on a hard track day or similar high speed runs in the summer, an additional cooler would be nice. It will take some of the heat load off the radiator as well.

Permacool makes a huge assortment of oil cooler cores and one of those would probably work quite nicely. In place of the thermostat on the oil you might be able to set it up on a shut off valve so in cold weather you could block the air/oil cooler and run only on the internal.

I would think the folks at Axis Power racing or one of the other high power vendors has something worked out, even if they don't list it directly.

Larry
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Old 02-26-2004, 01:10 PM   #10
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Larry(or anyone else), have you monitored your oil temps before and after installing the cooler thermostat? I'm wondering if that, plus less antifreeze (or maybe switching to the NPG+), plus a bigger radiator wouldn't be as effective (or at least close) as adding an oil cooler. It would be more costly, but not that much, and also provide better cooling for the engine as well.

I must admit that each time I get a catalog from Pegasus racing I spend some time looking at all their oil cooling stuff.
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Old 02-26-2004, 04:08 PM   #11
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Take a look at flex-a lite, the 3953 kit. I called tech support, and that is what is specific to the wrx. In Texas, I have no need to worry about a t-stat control on the cooler. My temps run from the 120s (cool weather) to almost 200 (stuck at a light, summer). The one track day I had temps approaching 200 on the last few mins (20 min time) All temps are in F. Hope this helps.

http://www.flex-a-lite.com/auto/html...l-coolers.html

edit- I believe it comes in just under 200 for everything.
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Old 02-26-2004, 10:21 PM   #12
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It's interesting (I just revisited my Pegasus Racing catalog) that the thermo stats that they offer all open at 180 degrees- seems a little high, but maybe not.

They also offered another reason to use one (besides difficulty getting ones oil to proper temp), that is the possible damage that could be done to the oil cooler itself w/ cold oil (maybe that's high vicousity stuff they're talking about).

Larry- I like your idea about a valve, that might be a simple solution. Open it when you need the cooler, close when you don't.

Mike
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Old 02-26-2004, 11:11 PM   #13
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i pieced mine together for under a 100 bucks....but if i had to do it again, i would spend a little bit more and get braided lines.

living in so cali, i don't think i need the thermostat, as the winter here drops to a freezing 45 degrees F

i'm sure you can piece urs together w/everything u want for under 175
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Old 02-26-2004, 11:50 PM   #14
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$175 may be a little optimistic, at least one w/ a t stat. Pegaus lists them at ~ $90, ~ $100-130 for the cooler, remote head- ~ $25, lines/fittings???

Probably $200ish w/o a t stat, $300 ish w/- still a far cry from $1800 for the STi one.

Big Sky
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Old 02-27-2004, 12:15 AM   #15
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IIRC there was a guy a while back to broke down everything he used for his kit.
Mocal sandwich adapter w/ built in thermostat (SP1FT) (~80) from www.batinc.net?
two NPT to -8 AN adapters (~10)
8ft of -8 AN lines @ 4.50/ft (~36)
two 45 degree fittings (~35)
two 90 degree fittings (~35)
and the cooler can be anything from 40-200 and up depending on brand name (B&M, long, setrab, mocal), size, and design (the tube style or the stacked plate).

You're looking at something around 140 after all the shipping plus the price of the cooling core. If you want to go up to -10 lines, might be up near 180 plus the core.

Also, if you have a skidplate you probably don't have to worry about the lower ground clearance from the sandwich adapter.
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Old 02-27-2004, 12:20 AM   #16
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don't forget perma cool, their cores are rather low in price, for 65 bux, you can get a nice size core from them....i would factor in a little more if you're going w/braided lines though, i priced them when i was looking, and i would guess i would have to spend close to 50 for them...but maybe u know of a cheaper source
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Old 02-27-2004, 12:23 AM   #17
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Quote:
Originally posted by vile
don't forget perma cool, their cores are rather low in price, for 65 bux, you can get a nice size core from them....i would factor in a little more if you're going w/braided lines though, i priced them when i was looking, and i would guess i would have to spend close to 50 for them...but maybe u know of a cheaper source
The prices I found are for braided lines. Check out racerpartswholesale.com, aeroquip AQP braided lines. The fittings are also reusable swivel type.
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Old 02-27-2004, 12:40 AM   #18
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The Mocal sandwhich w/ built in themostat is a dandy! It also says you can use optional temps- is 180 the way to go or slightly lower?

They also have a slick device to work the VW VR6 that has a similar water/oil cooler as ours- this lets the external air cooler work in conjunction w/ the oem one- wow!

Thanks guys!

Mike
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Old 04-12-2004, 03:16 PM   #19
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Have you guys thought about running a separate coolant circuit to the WRX factory heat exchanger? You can have an electric water pump circulate coolant from the heat exchanger to a small front mounted radiator.

Just an idea I had for more cooling. You will lose your quick warm up though, but than you can turn the pump on/off to regulate oil temp. once hot. The benefit of this setup is that you don't run your oil all the way to the front, through the cooler, and back. Less connections less chances of leaks and no more than factory pressure drop. What do you think? I may do this with mine.

Toon
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Old 04-12-2004, 03:56 PM   #20
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Might work. Even w/ an additional radiator I wonder how the cooling capabilites would compare to a air to oil cooler.

I've talked to BAT a couple of times and you can set up the sandwhich w/ a adapter to accept the oil filter in th oem location- it would lower the filter by ~ 1". They said they could easily work up an entire kit w/ a Mocal cool/sandwhich w/ t-stat and lines. A person would have to figure out mounting the cooler.

Big Sky
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Old 04-12-2004, 07:26 PM   #21
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BIG SKY, have you tried Summit Racing? They have several oil cooler kits, none specifically for the wrx, but they do carry universal kits with several different adapters for different threads and the majority of the kits are way cheaper than any other that I have seen.
Take a look on the summit racing web site Item #BMM-70261, It's an oil cooler kit by B&M costs $109.95, and is compatable with 20mx1.5!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!
Can't beat it, I buy a lot of stuff from Summit for my wrx.

Last edited by wrx plus; 04-12-2004 at 07:35 PM.
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Old 04-12-2004, 07:39 PM   #22
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Quote:
Originally posted by wrx plus
BIG SKY, have you tried Summit Racing? They have several oil cooler kits, none specifically for the wrx, but they do carry universal kits with several different adapters for different threads and the majority of the kits are way cheaper than any other that I have seen.
Take a look on the summit racing web site Item #BMM-70261, It's an oil cooler kit by B&M costs $109.95, and is compatable with 20mx1.5!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!
Can't beat it, I buy a lot of stuff from Summit for my wrx.
The reason they're cheaper is because they use rubber lines instead of steel braided lines with fittings. They also do not include an oil thermostat either, which is probably the most important part for a street-driven car that sees cold weather. Also the remote mount for the filter usually uses a 3/4-16 Ford type spin-on filter, not the factory 20 x 1.5

One more thing I forgot to mention, I have the basic permacool m20 x 1.5 spin-on adapter and I wouldn't recommend using it. The center passage is small, there's about 1/3 to 1/2" section between the threadings. The outer passage can be enlarged with a grinding stone and dremel, but the inner one is much more difficult. It might be good enough, but I think they could have made it better. IMO best bet is to go with the Mocal sandwich adapter with built-in thermostat. If you don't run a skidplate you could probably just make a mini version of one for extra protection if you're worried about the oil filter sitting too low. Hopefully whatever GT Spec comes out with in addition to the subframe replacement will address the oil filter protection issue.
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