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Old 03-12-2009, 10:26 PM   #1
WRX 2002
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Default Oil Cooler - install ?

I'm just about to install a oil cooler. What is the bets way to install.

Inlet / outlet side on top/side/bottom or in the end it doesn't matter.

If on side should the inlet be at the top or bottom.

Thanks for any advice.

N.
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Last edited by WRX 2002; 03-12-2009 at 10:43 PM.
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Old 03-12-2009, 10:49 PM   #2
Patrick Olsen
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Either both on top or both on the side. You do not want both on the bottom, as you end up with a pocket of air in the top of the cooler when you fill the oil system.

If you do them both on the side I think you want outlet on top, but I could be wrong.

Pat Olsen
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Old 03-12-2009, 11:10 PM   #3
WRX 2002
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Thanks, then probably best on the side otherwise you could never get the old oil out for oil changes. Or may be the small amount left in is no real consequence.
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Old 03-13-2009, 10:24 AM   #4
Patrick Olsen
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Well, the siphon effect should suck the oil out of the cooler if the inlet/outlet are on top.
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Old 03-13-2009, 01:49 PM   #5
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A little off topic, but I thought I'd pass this on.

I am about to install a new motor and already have an Earl's oil cooler, lines, sandwich adapter, etc. in my parts collection!

I was discussing this 'add on' with my mechanic/tuner, he highly recommended that I go with an adapter that has an oil temp reg. system within it (thermostat), like a Molcal sandwich adapter, or use an inline oil temp thermostat.

He explained that without a temp thermostat, the oil will remain cool for a long period of time, especially in the north! And that running oil that is too cool through a motor, can do more bearing and surface damage than oil at temp.

My Mocal unit is enroute!
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Old 03-13-2009, 02:41 PM   #6
WRX 2002
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He is correct, I have the same unit already. Take note with the Mocal sandwich adapter, the fittings are not NPT to AN but a special fitting.

"Mocal Sandwich Plate- 20mm Thread

This compact, lightweight, high-flow sandwich plate incorporporates a 180o oil thermostat to regulate oil flow to the cooler until the engine is properly warmed up. The sandwich plate is 1-5/16" thick with 1/2" Parallel ports.

We strongly recommend the use of AN Male to BSP Male unions. These unions come by the pair and include the 1/2" Dowty seal. This is the proper fitting to use with any Mocal Sandwich plate.
Use of a NPT fitting is not recommended on Mocal plates. Damage to plate or leaks may occur."

http://www.racerpartswholesale.com/p...andwich_Plates

I had NPT fittings, they really don't fit well in the sandwich adapter.

Now finding a place to install the cooler. Prelimiary plans putting it in the drivers side fender with a gear box oild cooler with a manual switched fan, so I can turn it on or off as necessary.
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Old 04-20-2009, 03:32 PM   #7
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Alright im gonna start this thread back up for a minute.
I bought a Earls Sandwich adapter w/ built in thermostat. The center post O.D is smaller then the subaru metric center post bolt adapter thing...
Should I machine out the sandwich adapter center post hole to accommodate the subaru fitting metric center post bolt? ....It wouldn't need much machining.
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Old 04-21-2009, 12:14 AM   #8
Patrick Olsen
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Looking at Earl's website, it appears they don't make any metric thermostatic sandwich adapters. I'd be wary of drilling out something like that, but maybe I'm just being paranoid.

Pat
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Old 04-21-2009, 01:52 AM   #9
MartinSTi05
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I would keep the inlet/outlet of the cooler mounted on the top. Patrick mentioned that the siphon effect could empty the cooler, but you would be guaranteed of that eventuality if it was oriented fittings down or to the side.
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Old 04-21-2009, 06:49 PM   #10
Patrick Olsen
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After my original reply, I found mention of OEM applications where the cooler is mounted with the inlet/outlet pointed down. In hindsight, I know I've seen transmission coolers mounted that way on pick-up trucks as I wander around junkyards scavenging, so my concern about air pockets must not be justified.
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Old 04-21-2009, 06:52 PM   #11
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I run mine facing down. No issues that I can tell.

-Duncan
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Old 04-22-2009, 10:08 AM   #12
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Quote:
Originally Posted by Patrick Olsen View Post
Looking at Earl's website, it appears they don't make any metric thermostatic sandwich adapters. I'd be wary of drilling out something like that, but maybe I'm just being paranoid.

Pat
Can use this one.

http://www.racerpartswholesale.com/p...andwich_Plates

Nigel.
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Old 05-14-2009, 04:44 PM   #13
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Bump...

www.batinc.net

Call them up, they have everything you could possibly need for an oil cooler setup. Just picked up a kit with a thermostatic adapter and 19-row cooler.
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Old 05-29-2009, 11:49 AM   #14
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Quote:
Originally Posted by dmross View Post
Bump...

www.batinc.net

Call them up, they have everything you could possibly need for an oil cooler setup. Just picked up a kit with a thermostatic adapter and 19-row cooler.
How much did you pay, if you don't mind me asking?
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