Small Car cast oil pan issue?

r39o · Last edited by r39o on Sat Jan 12, 2013 4:34 pm; edited 1 time in total

I get a sudden oil pressure drop when I make fast stops.

This usually happens when dropping out of light speed from the freeway.

But, has happened at other times too.

It happens every now and then.

It has NOT happened going down steep drives, though...

My oil is up to the mark on the Small Car plastic tube dip stick.

Any body else have this issue with their SC cast aluminum oil pan?
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tarandusVDub · Posted: Thu Jan 10, 2013 3:43 pm Post subject:

I have a SC oil pan with custom dip stick, but don't have an oil pressure gauge....never noticed a problem though.
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dobryan · Posted: Thu Jan 10, 2013 4:08 pm Post subject:

I too have the SC 5 qt cast pan with tube dipstick and a VDO oil gauge. No oil pressure fluctuations like your description. All pressures are normal.
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JPrato · Posted: Thu Jan 10, 2013 4:14 pm Post subject:

Two years with the Small Car pan but I don't have an oil pressure gauge, just the idiot light. No issues that I know of..........maybe I don't want to know?
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tarandusVDub · Posted: Thu Jan 10, 2013 4:25 pm Post subject:

insyncro · Posted: Thu Jan 10, 2013 5:21 pm Post subject:

Who converted the oil pickup tube?

r39o · Posted: Thu Jan 10, 2013 6:22 pm Post subject:

Franklinstower · Posted: Thu Jan 10, 2013 6:35 pm Post subject:

Crankey · Samba Member Joined: July 11, 2004 Posts: 2656

I saw one of those with a big hole busted in the bottom of it. I don't remember seeing any baffling for oil slosh.

as your coming down from light speed, are you using compression to slow down ? seems like that would suck up the oil quickly (with less to suck up since it's a shorter pan) and the oil is sloshing forward from slowing down.

you could have a baffle mounted inside it...maybe. that aluminum casting is porous and has soaked up engine oil so may be hard to weld inside it.

I don't think I would install a pan like that without measuring the provided pick up tube and the depth of the pan...and probably ask here what an acceptable gap is. I would feel compelled to verify the modified parts would be likely to work.

I have seen one oil pickup that had a pair of 1/4" rods welded across the pickup screen to make sure the screen couldn't be completely blocked if the pan had dented upward into the pickup...but then cast aluminum is more likely to break than dent.

insyncro · Posted: Thu Jan 10, 2013 9:10 pm Post subject:

Where is the oil pressure reading being taken from?

r39o · Posted: Thu Jan 10, 2013 9:43 pm Post subject:

jackbombay · Posted: Thu Jan 10, 2013 9:51 pm Post subject:

How long does the low oil pressure last? 1 second? 3 seconds? 10 seconds?
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r39o · Posted: Thu Jan 10, 2013 10:21 pm Post subject:

Rhinoculips · Posted: Thu Jan 10, 2013 10:58 pm Post subject:

BenT Syncro · Posted: Fri Jan 11, 2013 12:27 am Post subject:

iceracer · Posted: Fri Jan 11, 2013 6:26 am Post subject:

r39o: Do you have a speed sensor??? I have the same situation with mine but I think you may be confusing it with somethings else. I am running a 2.2L from a 93 Subaru. It does n otrequire a speed sensor however when I come off the throttle there is quite a big drop in rpms which lead to the engine almost killing which results in the oil light flickering for a second. It then recovers and all is well. Doesn't bother me, I may or may not get a speed sensor.
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r39o · Posted: Fri Jan 11, 2013 8:29 am Post subject:

I have a speed sensor.

BUT, as we know, the counts we generally get are not what the Subaru one generates for the same speed.

My speed sensor is a VW one mounted on the back of the speedometer.

I do NOT, I think, experience a drop in rpms, but I will look again.....

NOTE, again, this only happens every now and then, but the other day it happened a couple of times. I will drive the van today to a site and I will see how it does . Thanks....
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"Use the SEARCH, Luke" But first visit the Vanagon FAQ!

1990 Multivan EJ 22, Rancho trans 0.82 4th, Small Car front AC, CLKs w/ 215/65-16, homemade big brakes 303mm, Konis, Recaros, etc....

Click to see my ads for Cup holders, Subaru clutch fix and CLK wheels (no wheels currently)

MarkWard · Posted: Fri Jan 11, 2013 8:53 am Post subject:

How is the pickup sealed to the engine? If it is not sealed 100% if uncovered could cause a drop in oil pressure. I have no experience with Subaru installs.
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r39o · Posted: Fri Jan 11, 2013 8:59 am Post subject:

insyncro · Posted: Fri Jan 11, 2013 9:06 am Post subject:


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