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Old 03-12-2015, 07:13 PM   #1
mopar3.0
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Member#: 261696
Join Date: Oct 2010
Chapter/Region: E. Canada
Location: st johns nl
Vehicle:
2004 wrx
red

Default process west oil cooler. not such a deal lol

picked up a new process west oil cooler kit for my 04 off ebay for 100 usd.
but I see it only uses 8an(1/2) lines and fittings

I think this is on the small side,
any input?
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Old 03-13-2015, 01:08 PM   #2
Patrick Olsen
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Join Date: Jul 1999
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Location: Where the Navy sends me...
Vehicle:
1997 Legacy 2.5GT
QuickSilver Metallic

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Most folks would tell you to go with -10. I've seen various posts over the years of -8 setups, with mixed results. I've seen a couple cases where the poster said they tried -8 lines, oil pressure was noticeably lower than before the cooler was installed, so they bumped up to -10 and all was well again. And I've seen examples where the poster said oil pressure was great and they had been running the -8 cooler setup for a bazillion miles with no issues.
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Old 03-13-2015, 02:40 PM   #3
mopar3.0
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2004 wrx
red

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a friend of mine suggested to put the unused air to oil cooler in line with the coolant supply line going to the oil cooler, not sure if this would yield any gain in delta in the cooler by droping the water inlet temp
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Old 03-13-2015, 05:05 PM   #4
rustler753
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I run a custom general twin 16row earls coolers in series with -8AN gauge and pressures have been fine. 30psi idle, 80psi wot.
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