PS fluid keeps spilling out of the cap? I have a solution...and its cheap!

omgzirra_exe · 05-22-2025, 10:16 AM

I'm waiting for a few more engine maintenence parts, and I should have the shims installed in the next 3 years. like everything else i have stocked up in my friends shop.

kolosy · 05-22-2025, 10:25 AM

Btw I have 2 high mileage ps pumps if someone wants to try it on a donor unit instead of theirs. Free, just pay for shipping.

bigjae1976 · 05-29-2025, 09:59 AM

Bump. Need more beer money

kolosy · 05-29-2025, 11:08 AM

Quote:

Originally Posted by bigjae1976

Bump. Need more beer money

Wanna make me a splitter lol

bigjae1976 · 08-02-2025, 10:02 AM

drago740

Can't send you a PM...but here is the answer to your question...

If street driving, I would stick with 1-2. Or lift more weights.

Once you are moving it won't feel significantly different street driving. If you are turning laps at a track, you'll definitely notice after 15 minutes. I would describe it as making the steering less sensitive.

Lower speeds, yeah...gonna notice it.

If this is purely a street car you can eliminate most of the spillage by filling the reservoir to the bottom on the dipstick. If you do that, then all would need is 1 shim if you just want to eliminate the fluid leakage. Unless you're running it to redline all of the time.

ty7 · 08-02-2025, 10:30 AM

Shim the pressure regulator to lower pressure and increase recirc flow. This stops leaks, protects the pump, and improves steering feel. Steering gets a bit heavier.

pirategenes · 08-02-2025, 10:36 AM

Is there a DIY on this anywhere?

bigjae1976 · 08-02-2025, 10:40 AM

Quote:

Originally Posted by pirategenes

Is there a DIY on this anywhere?

I think there are pics of what to do pnce you get the pump out in this thread. I’m on mobile, will check later.

Redd · 04-19-2026, 09:30 PM

Revisiting this thread. Are 2 shims enough to prevent PS fluid overflow? I don't want gorilla arms for my car which is 90% daily driven.

bigjae1976 · 07-30-2026, 08:59 AM

Quote:

Originally Posted by Redd

Revisiting this thread. Are 2 shims enough to prevent PS fluid overflow? I don't want gorilla arms for my car which is 90% daily driven.

2 shims will reduce the amount of fluid that leaks out. Can't say all fluid leakage is eliminated. If the container is overfilled, fluid will leak out.

You can run the reservoir a little lower because of the increased recirc flow through the regulator which can help lower or eliminate leakage. I run my E46 so the fluid just touches the dipstick. Typically, no fluid leaks out. If I fill it higher then there will be some seepage.

kevinm03 · 07-30-2026, 09:49 AM

Can you ship to Ireland?

bigjae1976 · 07-30-2026, 09:51 AM

Quote:

Originally Posted by kevinm03

Can you ship to Ireland?

PM me your address and I'll provide a shipping quote.

omgzirra_exe · 07-30-2026, 05:00 PM

i still have these in the little baggy lol.

Waiting to service the whole front of engine before i tackle this job.. before i decide to spend money on a GT3 E-PS Pump..

05-22-2025, 10:16 AM	#45
omgzirra_exe Colonel 3058 Rep 2,621 Posts Drives: 4.4L M3, 1JZGTE IS300, N55B30 Join Date: Jun 2019 Location: BMW, M3 iTrader: (0)	I'm waiting for a few more engine maintenence parts, and I should have the shims installed in the next 3 years. like everything else i have stocked up in my friends shop. __________________ Build: ZillaSpec M3 N1 Build M3Post Track General Discussion: Discord #fakeGTS
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05-22-2025, 10:25 AM	#46
kolosy BimmerPost Supporting Vendor 3485 Rep 3,629 Posts Drives: over potholes Join Date: Dec 2008 Location: Chicago iTrader: (3)	Btw I have 2 high mileage ps pumps if someone wants to try it on a donor unit instead of theirs. Free, just pay for shipping. __________________ Current '20 AG X7M50 (daily + track tow), M4 GTS (track), '21 X3 M40i (wife) Recent Past '11 E90 M3 (track), '21 DG X5MC, '22 BG G82, '12 E92 M3 ZCP, '08 E93 M3, '18 F80 ZCP, '04 E46 M3 Cleaning out my garage -- stuff for sale
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05-29-2025, 09:59 AM	#47
bigjae1976 Major General 2013 Rep 8,248 Posts Drives: 11 E90 M3 Individual Join Date: Mar 2006 Location: Houston, TX iTrader: (22) Garage List 2004 BMW M3 [6.33] 2011 BMW E90 M3 [6.83] 2013 BMW 328i [6.67]	Bump. Need more beer money __________________ 2018 F30 320iX Melbourne Red 2011 E90 M3 Monte Carlo Blue 2004 E46 M3 Imola Red 2000 E36/7 Z3 Steel Blue
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08-02-2025, 10:02 AM	#49
bigjae1976 Major General 2013 Rep 8,248 Posts Drives: 11 E90 M3 Individual Join Date: Mar 2006 Location: Houston, TX iTrader: (22) Garage List 2004 BMW M3 [6.33] 2011 BMW E90 M3 [6.83] 2013 BMW 328i [6.67]	drago740 Can't send you a PM...but here is the answer to your question... If street driving, I would stick with 1-2. Or lift more weights. Once you are moving it won't feel significantly different street driving. If you are turning laps at a track, you'll definitely notice after 15 minutes. I would describe it as making the steering less sensitive. Lower speeds, yeah...gonna notice it. If this is purely a street car you can eliminate most of the spillage by filling the reservoir to the bottom on the dipstick. If you do that, then all would need is 1 shim if you just want to eliminate the fluid leakage. Unless you're running it to redline all of the time. __________________ 2018 F30 320iX Melbourne Red 2011 E90 M3 Monte Carlo Blue 2004 E46 M3 Imola Red 2000 E36/7 Z3 Steel Blue
	Appreciate 1 drago7409.00 Quote

08-02-2025, 10:30 AM	#50
ty7 Enlisted Member 1 Rep 38 Posts Drives: E92 M3 Join Date: Jun 2013 Location: NYC iTrader: (0)	Shim the pressure regulator to lower pressure and increase recirc flow. This stops leaks, protects the pump, and improves steering feel. Steering gets a bit heavier.
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08-02-2025, 10:36 AM	#51
pirategenes Second Lieutenant 181 Rep 210 Posts Drives: E90 M3 Join Date: Jan 2018 Location: MI iTrader: (0)	Is there a DIY on this anywhere?
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04-19-2026, 09:30 PM	#53
Redd Brigadier General 5039 Rep 4,842 Posts Drives: 2010 BMW E92 M3 Dakar Edition Join Date: Jul 2015 Location: Malaysia iTrader: (0)	Revisiting this thread. Are 2 shims enough to prevent PS fluid overflow? I don't want gorilla arms for my car which is 90% daily driven.
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07-30-2026, 09:49 AM	#55
kevinm03 Second Lieutenant 128 Rep 284 Posts Drives: E92 M3 Comp Santorini Blue Join Date: Jul 2016 Location: Ireland iTrader: (0)	Can you ship to Ireland? __________________ Weekend: 2012 E92 M3 Comp KA401 - Santorini Blue Track: Schirmer V8 GT Daily: 2026 NA5 iX3 Previous: G20 M340i, F36 430d, Mk7 GTI PP, Mk5 GTI ED30
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07-30-2026, 05:00 PM	#57
omgzirra_exe Colonel 3058 Rep 2,621 Posts Drives: 4.4L M3, 1JZGTE IS300, N55B30 Join Date: Jun 2019 Location: BMW, M3 iTrader: (0)	i still have these in the little baggy lol. Waiting to service the whole front of engine before i tackle this job.. before i decide to spend money on a GT3 E-PS Pump.. __________________ Build: ZillaSpec M3 N1 Build M3Post Track General Discussion: Discord #fakeGTS
	Appreciate 0 Quote