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Old 06-30-2008, 09:55 PM   #1
Seraphinwolf
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94SVX LSi Bourduex Pearl

Default External or Subaru kit oil cooler for my EZ30R GF.

Okay so while I'm compiling all my parts and laying out the vehicle and systems in my EZ30R swap. Now one question I need some info on for differences. External oil cooler and the turbo Forester Oil cooler kit, or both? Now what exacly does the Subaru kit system do? Car is being set up NA and might be FI later on it it's life but can make more changes at that point. I'll likely be fine temp wise but I like over doing it a bit. This will be my daily driver with an aftermarket radiator made designed up to specs for the engine(DS1MotorSports is looking into it. Dylan is the man!)
-Gaddis
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Old 07-01-2008, 08:42 AM   #2
Patrick Olsen
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Is there a factory oil cooler kit for the EZ30R? Mine's still sitting happily in the garage in a crate, so I haven't even looked to see if it has an oil-to-water cooler on it or not. If it does not have a factory cooler, I think it would be risky to assume the Forester cooler kit would fit.

Pat Olsen
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Old 07-01-2008, 07:34 PM   #3
Seraphinwolf
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Quote:
Originally Posted by Patrick Olsen View Post
Is there a factory oil cooler kit for the EZ30R? Mine's still sitting happily in the garage in a crate, so I haven't even looked to see if it has an oil-to-water cooler on it or not. If it does not have a factory cooler, I think it would be risky to assume the Forester cooler kit would fit.

Pat Olsen
It's came OEM "Auto Forester and Turbo Imprezas" according to the site. http://www.subaruwrxparts.com/produc...kit-p-357.html
Now I'm not sure what the kit entales and what the system actually does to cool the oil. Looks like there's an aditional pump for something or maybe a compressor. I think I'll email them and ask cause it's just the local Subi dealer's Parts department. They are also on here I'll just PM them. Just thinking getting a good cooling system. Will help the longevity of the engine along with genneral better responce from the engine when any load or extended higher output. So anyone else know any info on this or input as to choice of one over the other?
-Gaddis
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Old 07-01-2008, 09:58 PM   #4
Patrick Olsen
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The kit you're looking at is an oil-to-water cooler that installs between the block and the oil filter. There's no pump or compressor - not sure what made you think that. The oil flows through the cooler on the way to/from the filter, while coolant flows around it to transfer heat. It is specifically designed for an EJ-series engine. The different water pump outlet, the plug that goes into the block with a hose nipple on it, the hard heater hoses, brackets, etc are designed for an EJ, hence my comment that I think it would be risky to assume it would fit an EZ30R. I'd be willing to bet it won't fit.

I agree that oil coolers are good things, assuming the car is going to pushed in such a way that the additional cooling is necessary. For the EZ30R I think your only option is going to be an aftermarket setup. There have been a number of threads about oil cooler setups, so you should be able to find some good info here.

Pat

Last edited by Patrick Olsen; 07-02-2008 at 02:23 AM.
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Old 07-02-2008, 10:18 PM   #5
Seraphinwolf
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Originally Posted by Patrick Olsen View Post
The kit you're looking at is an oil-to-water cooler that installs between the block and the oil filter. There's no pump or compressor - not sure what made you think that. The oil flows through the cooler on the way to/from the filter, while coolant flows around it to transfer heat. It is specifically designed for an EJ-series engine. The different water pump outlet, the plug that goes into the block with a hose nipple on it, the hard heater hoses, brackets, etc are designed for an EJ, hence my comment that I think it would be risky to assume it would fit an EZ30R. I'd be willing to bet it won't fit.

I agree that oil coolers are good things, assuming the car is going to pushed in such a way that the additional cooling is necessary. For the EZ30R I think your only option is going to be an aftermarket setup. There have been a number of threads about oil cooler setups, so you should be able to find some good info here.

Pat
Yeah I wasn't sure what the method was the kit used for cooling. That clears it up and seems that it would be helpful if there was one made with the EZ's specs in mind. Guess getting a "simple" External oil cooler is the way to go. While not "needed" it will be nice to have one thing less to have on the brain for the future. Just one more thing on the parts list I guess. But at least with Link releasing the G4 soon my headache trouble shooting list dropped dramaticly. I was really afraid it was gonna be a lont time before a Standalone able to link right into the OEM(legacy's is being laid in) harness and run everything.
-Gaddis
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Old 08-02-2008, 08:28 PM   #6
Patrick Olsen
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I finally got around to looking at the EZ30R in my garage to see if it's got a factory oil cooler. The engine is still in it's crate, so I didn't get a good look (had to use a mirror to see where the filter sits) but it does, in fact, have an oil-to-water cooler, just like the ones on the EJ engines.

An external oil-to-air cooler will be even more effective, assuming it's sized properly and you can get good airflow to the cooler. I added one of the factory oil coolers (like the Forester kit you linked above) to my EJ25 and it dropped oil temps about 10C on the track. I would expect with a good external oil cooler that I could get that down another 10 or 20C.

Pat
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Old 08-07-2008, 12:26 AM   #7
Seraphinwolf
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Quote:
Originally Posted by Patrick Olsen View Post
I finally got around to looking at the EZ30R in my garage to see if it's got a factory oil cooler. The engine is still in it's crate, so I didn't get a good look (had to use a mirror to see where the filter sits) but it does, in fact, have an oil-to-water cooler, just like the ones on the EJ engines.

An external oil-to-air cooler will be even more effective, assuming it's sized properly and you can get good airflow to the cooler. I added one of the factory oil coolers (like the Forester kit you linked above) to my EJ25 and it dropped oil temps about 10C on the track. I would expect with a good external oil cooler that I could get that down another 10 or 20C.

Pat
Wow I guess thanks for going through the trouble. If you want since mine's up on the stand can take pics if you want clearer view. First I'm getting mine running. THEN I can drop the extra to throw one in there. I was recently thinking back to this thread reading a write up on the 09 GT-R's design of cooling and dual dry-wet sumppump. (LOL read more on the powertrain. All i have to say is FASTEST AUTOMATIC TRUCK I"VE EVER SEEN!) Pat you figure out what you're doing on the ECU for yours? Link G4? I'm pretty sure I am.
-Gaddis
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Old 08-08-2008, 03:33 PM   #8
ciper
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If you do plan to use an external oil cooler please also use a thermostatic bypass valve so the oil isn't flowing through it when at or below normal operating temperatures.
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Old 08-09-2008, 09:10 PM   #9
Patrick Olsen
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I'm thinkin' you could just double stack the oil coolers. Unlike the EJ-series engines, the EZ oil filter is parallel to the ground. Again, my engine is still in a crate, so there may be something I'm missing, but I think you could just put a sandwich adapter on the existing factory oil-to-water cooler and add an oil-to-air cooler that way. The stock cooler would act as the thermostatic control.

Pat

Last edited by Patrick Olsen; 08-13-2008 at 02:23 PM.
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Old 08-13-2008, 12:45 PM   #10
Seraphinwolf
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Quote:
Originally Posted by Patrick Olsen View Post
I'm thinkin' you could just double stack the oil coolers. Unlike the EJ-series engines, the EZ oil filter is parallel to the ground. Again, my engine is still in a crate, so there may be something I'm missing, but I think you just put a sandwich adapter on the existing factory oil-to-water cooler and add an oil-to-air cooler that way. The stock cooler would act as the thermostatic control.

Pat
Well like I said ask and you shall receive if you want pics. I just got back from a week in Cali last night and plan on taking it off the engine stand soon to mate up to the 5EAT. So if you want pics give me a holla! I really should get pics anyways but I"ll get to them in a day or two. I"m a little burnt and need to take care of a few small things that went array while I was gone.
-Gaddis
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