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Old 02-07-2014, 05:05 PM   #126
AdamBOMB_STi
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Member#: 103419
Join Date: Dec 2005
Chapter/Region: BAIC
Location: South Bay, CA
Vehicle:
04.7 STi
LA Sleeved 2.5,35R,Hydra

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Finally getting off my butt and gathering parts to get my motor back together! Sponsors welcomed! lol
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Old 02-08-2014, 02:34 PM   #127
rexworx
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Member#: 103232
Join Date: Dec 2005
Chapter/Region: Tri-State
Location: GTX3076R-276/272, GTX3071R
Vehicle:
MY05 GDA,MY04FXT6spd
2.5ltr,PPG,Front LSD,4.44

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I just wanted to give a little update while this thread is back from the dead. My build has about 21,000 miles on it. Still running strong. Knocks on wood...

04 sti single avcs built EJ257 "04 forester xt"
Mains .015", Rods .018"
Castrol GTX 10w-40 non synthetic
11mm ported with 3 shims total
Oil Galley porting and cleaned up returns to pan
AEM digital oil pressure gauge 0-150psi Sensor placed in the oil galley plug next to the PCV bung/coolant crossover pipe
95-101psi Cold startup @ idle 1500rpm
22-30psi hot idle @ 850rpm
40-45psi hot @ 1500rpm
55-70psi hot @ 2000-6000rpm
70+psi hot @ 7000+rpm.

Id like to see if swapping in a ported shimmed 10mm pump might give me more oil pressure in the higher rpm range.

I know it would help if I had a oil temp gauge so I could be more specific with my readings. Thats next on my gauge list...

Last edited by rexworx; 02-08-2014 at 03:56 PM.
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Old 02-08-2014, 10:37 PM   #128
alcoolaid
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Location: Vancouver, BC
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'07 SWP STi
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70psi sounds a little low at that rpm range. I would be shooting for at least 80-90 as when things get really hot the pressure can drop 10-20psi easily
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Old 02-08-2014, 11:17 PM   #129
AdamBOMB_STi
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Location: South Bay, CA
Vehicle:
04.7 STi
LA Sleeved 2.5,35R,Hydra

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What oil are you guys running?
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Old 02-09-2014, 01:57 AM   #130
alcoolaid
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M1 15w50
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Old 02-09-2014, 02:11 AM   #131
AdamBOMB_STi
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LA Sleeved 2.5,35R,Hydra

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Sweet. I usually run valvoline vr1 20w50
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Old 02-12-2014, 09:51 AM   #132
rexworx
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Join Date: Dec 2005
Chapter/Region: Tri-State
Location: GTX3076R-276/272, GTX3071R
Vehicle:
MY05 GDA,MY04FXT6spd
2.5ltr,PPG,Front LSD,4.44

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Quote:
Originally Posted by alcoolaid View Post
70psi sounds a little low at that rpm range. I would be shooting for at least 80-90 as when things get really hot the pressure can drop 10-20psi easily
I agree. I see no change when the oil is "really hot" though. I also admit that I havent had the car on the tract for 20-30 minutes either. just some autox etc. not near the same...

Last edited by rexworx; 02-12-2014 at 10:51 AM.
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Old 03-16-2014, 04:48 PM   #133
Scargod
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Location: S central CT, New England
Vehicle:
2008 STI hatch
silver

Default My take on pump shimming

Quote:
Originally Posted by Crystal_Imprezav View Post
Also, you should NOT be just throwing shims in based on your "gut" feeling and "design". You need to measure the spring pressure and adjust shims as necessary to meet the spec. The exact same way you would test a valve spring... There IS a reason some OEM factory pumps come with no shims, one shim, two shims, and etc.
I agree. Even when you get a new pump there are different manufacturers, different castings, different tolerances and human error that comes into play.
Spring pressure should be measured. I haven't heard a single person mention compressed, installed length and/or a spring pressure. Nor have I heard anything but "stock shim" mentioned. I'm guessing they have a number of combinations of shims to choose from when doing assembly and that someone is doing QC to maintain consistent results. I'm hearing people say that it does matter whether you add one or two shims. This means that +/- a half-thickness shim might be best.

Since this thread is titled oil galley porting I'd like to ask a question related to oil galleys. Is there an alternate place I could take oil out of the engine? Also, where could I return it? I'm trying to get away from oil lines around the headers. I already use an external filter, cooler and Accusump. Is it possible to block off the oil filter ports and route it somewhere else? I'm up for drilling and tapping, machining or welding to accomplish this.
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