DIY e92 M3 Power steering upgrade/Blow-by fix

mkPOTO · 06-02-2015, 06:03 PM

very interesting, this is something I need to do!

WarrantyTracker · 06-04-2015, 12:28 PM

Thanks for sharing such detailed part numbers and everything.

I don't have a lot of experience tapping plastic. Do the threads hold up to the return line okay?

08 E92 Jerez Black · 06-04-2015, 12:43 PM

Initially I had the same concern but figured the part was only 30 bucks so I can experiment and see if it was strong enough. After running for a second with a couple of threads I quickly found out not only was it but I was able to put quite a bit of pressure on it.no signs of having any issues and is working great

08 E92 Jerez Black · 10-17-2015, 09:42 AM

4 months and this fix is flawless, no more messes!!!

pshoey · 10-26-2015, 07:38 PM

Quote:

Originally Posted by 08 E92 Jerez Black

LAWSON'S Performance in Petaluma CA. but here are part numbers for the same stuff

45 degree An to 3/8 NPT
Aeroquip Part FBM5023 $8.97 from summit

Aeroquip Socketless Hose Ends
Part FBL1512 $6.97 from Summit

http://www.amazon.com/Vermont-Americ...=3%2F8+npt+tap

or any other vendor, I tend to try and make sure all my AN stuff is from the same company

Just in-case anyone else is going to try this, one of the part numbers is wrong. The Hose end should be FBL1513 which is the 8AN size rather than the 6AN size which is referenced in the above post.

Otherwise, great post and I can attest that this is an easy and worthwhile mod.

Theodore · 03-20-2016, 06:28 PM

OP and contributors: Great DIY thread, thanks! I plan on doing this very soon. Can you give an update on how it is holding up?

08 E92 Jerez Black · 03-20-2016, 08:21 PM

Working perfectly for me! And it looks great

Shredicus · 03-21-2016, 02:12 PM

Quote:

Originally Posted by Theodore

OP and contributors: Great DIY thread, thanks! I plan on doing this very soon. Can you give an update on how it is holding up?

Holding up nicely with no leaks here. As a note though when I installed the reservoir I did slip a couple worm-gear clamps on the hoses connected to the barb just to be safe.

08 E92 Jerez Black · 03-21-2016, 04:18 PM

Hi, this was what I did
"If you don't have crimp clamps get a kit from Amazon \

http://www.amazon.com/gp/product/B00...rch_detailpage

It's cheap and looks much better than the crap ones with the barrel screw that tightens the unit m(worm gear). Those break easily and end up being the addition that cuts the crap out of you when your trying to work on your car."

Shredicus · 03-21-2016, 05:41 PM

Quote:

Originally Posted by 08 E92 Jerez Black

Hi, this was what I did
"If you don't have crimp clamps get a kit from Amazon \

http://www.amazon.com/gp/product/B00...rch_detailpage

It's cheap and looks much better than the crap ones with the barrel screw that tightens the unit m(worm gear). Those break easily and end up being the addition that cuts the crap out of you when your trying to work on your car."

I agree. I will probably switch to oetiker clamps this summer.

nholmes · 03-21-2016, 08:03 PM

Love this mod. I've got some oetiker clamps, just too lazy.

okusa · 03-29-2016, 10:52 PM

Quote:

Originally Posted by Shredicus

Awesome and elegant solution! I was recently faced with this same quandry and took a slightly different approach.

I bought a regular barbed adapter stepped from 3/4 to 1/2 from autozone. Unfortunately It is a real pain in the ass to find 3/4 inch transmission hose since I knew regular heater hose would disintegrate pretty rapidly from the chf. I rubbed a little chf on a spare piece of heater hose to confirm these fears, and sure enough noticeable amounts of the hose deteriorated.

So I ended up buying a heavy duty goodyear power steering hose online but shipping was 3x the price of the item. The new hose is impervious to the chf and bridged the gap between adapter and reservoir perfectly when cut to size. I heated the exterior braid a bit and it shrank to fit the barbs with a plastic-like rigidity. All said and done it turned out pretty nice but I haven't installed it yet!

Hose

Reducer

PS: nice clamps! Makes the old wormgear look like junk

The hose shown in your picture is different from the one the link takes you to. The hose in the link is not braided looking and I don't think it will shrink if heated. Do you think it will still do the job?

DavidZ · 03-30-2016, 01:37 PM

Quote:

Originally Posted by okusa

The hose shown in your picture is different from the one the link takes you to. The hose in the link is not braided looking and I don't think it will shrink if heated. Do you think it will still do the job?

I think the hose in his link is the same braided hose - it's just a very low quality picture. Click on the image for an expanded view and I think I see braids.

Quote:

Originally Posted by nholmes

Love this mod. I've got some oetiker clamps, just too lazy.

I looked up that part number and it comes up as "heater hose." You really ought to get some proper power steering hose.

Why have you got an adapter on the input hose? Isn't it the same diameter as the input/hose on the stock M3 reservoir?

nholmes · 03-31-2016, 12:26 AM

Quote:

Originally Posted by DavidZ

I think the hose in his link is the same braided hose - it's just a very low quality picture. Click on the image for an expanded view and I think I see braids.

I looked up that part number and it comes up as "heater hose." You really ought to get some proper power steering hose.

Why have you got an adapter on the input hose? Isn't it the same diameter as the input/hose on the stock M3 reservoir?

Oh yeah, I ended up with hose from a local hardware store, not that SKU in the pic. I heated it to 270*F for 10 minutes and there was no distortion.

They wouldn't fit, well not easily from what I could tell, so I ended up needing two adapters.

Shredicus · 03-31-2016, 12:39 AM

Quote:

Originally Posted by okusa

The hose shown in your picture is different from the one the link takes you to. The hose in the link is not braided looking and I don't think it will shrink if heated. Do you think it will still do the job?

Quote:

Originally Posted by DavidZ

I think the hose in his link is the same braided hose - it's just a very low quality picture. Click on the image for an expanded view and I think I see braids.

Why have you got an adapter on the input hose? Isn't it the same diameter as the input/hose on the stock M3 reservoir?

Bingo. Just a low-res pic. As for the adaptor on the input, I didnt need one but it was definitely a snug fit getting it on there.

nholmes · 03-31-2016, 10:00 AM

If only one is needed, maybe I'll try fitting the hose once more.

okusa · 03-31-2016, 11:36 AM

Quote:

Originally Posted by Shredicus

Bingo. Just a low-res pic.

Actually it's not. I ordered the one from the link and it is not braided. It is smooth like a typical hydraulic hose.

Shredicus · 03-31-2016, 02:32 PM

Quote:

Originally Posted by okusa

Actually it's not. I ordered the one from the link and it is not braided. It is smooth like a typical hydraulic hose.

Hmm not really sure what to say then. That's where I ordered mine so I'm not sure why you got a different hose

okusa · 03-31-2016, 03:16 PM

Quote:

Originally Posted by Shredicus

Hmm not really sure what to say then. That's where I ordered mine so I'm not sure why you got a different hose

I just called PSC and was told that the two hoses are identical except one has a "pretty outside braid" and the other doesn't.

RoundelObsession · 04-04-2016, 01:54 PM

Thank You for the post 08 E92 Jerez Black!

Gcode · 06-07-2016, 01:07 PM

I did this mod using all the parts the OP posted. Very easy and simple task, but I have a micro leak.

I'm not 100% sure if the leak is coming from the threaded part in the reservoir or at the fittings.

Is it safe to use plumber's tape or something similar to it?

08 E92 Jerez Black · 06-07-2016, 01:22 PM

you could, but make sure that you actually got the fitting tight as well. this is all pretty much all low pressure, so you should not have leaks. My is dry as a bone

06-02-2015, 06:03 PM	#23
mkPOTO Mr. Nice Says Hello 636 Rep 16,662 Posts Drives: BMW M3 \| X5 xdrive 35i MSport Join Date: Dec 2008 Location: USA iTrader: (25) Garage List 2002 Lexus GS300 [0.00] 2008 BMW E92 M3 [5.58]	very interesting, this is something I need to do!
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06-04-2015, 12:28 PM	#24
WarrantyTracker Track? What Track? I was just riding along . . . 46 Rep 694 Posts Drives: Alpine White E92 M3 Join Date: Apr 2012 Location: An Undisclosed Location iTrader: (1)	Thanks for sharing such detailed part numbers and everything. I don't have a lot of experience tapping plastic. Do the threads hold up to the return line okay?
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06-04-2015, 12:43 PM	#25
08 E92 Jerez Black Private 37 Rep 85 Posts Drives: 2008 e92 M3 6 speed Join Date: Apr 2015 Location: United States iTrader: (1)	Initially I had the same concern but figured the part was only 30 bucks so I can experiment and see if it was strong enough. After running for a second with a couple of threads I quickly found out not only was it but I was able to put quite a bit of pressure on it.no signs of having any issues and is working great __________________ Last edited by 08 E92 Jerez Black; 10-17-2015 at 09:44 AM..
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10-17-2015, 09:42 AM	#26
08 E92 Jerez Black Private 37 Rep 85 Posts Drives: 2008 e92 M3 6 speed Join Date: Apr 2015 Location: United States iTrader: (1)	4 months and this fix is flawless, no more messes!!! __________________
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03-20-2016, 06:28 PM	#28
Theodore Lieutenant 669 Rep 412 Posts Drives: 2011.5 E92 M3 Join Date: Oct 2015 Location: Tampa Bay, FL iTrader: (6)	OP and contributors: Great DIY thread, thanks! I plan on doing this very soon. Can you give an update on how it is holding up?
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03-20-2016, 08:21 PM	#29
08 E92 Jerez Black Private 37 Rep 85 Posts Drives: 2008 e92 M3 6 speed Join Date: Apr 2015 Location: United States iTrader: (1)	Working perfectly for me! And it looks great __________________
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03-21-2016, 04:18 PM	#31
08 E92 Jerez Black Private 37 Rep 85 Posts Drives: 2008 e92 M3 6 speed Join Date: Apr 2015 Location: United States iTrader: (1)	Hi, this was what I did "If you don't have crimp clamps get a kit from Amazon \ http://www.amazon.com/gp/product/B00...rch_detailpage It's cheap and looks much better than the crap ones with the barrel screw that tightens the unit m(worm gear). Those break easily and end up being the addition that cuts the crap out of you when your trying to work on your car." __________________
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04-04-2016, 01:54 PM	#42
RoundelObsession Banned 256 Rep 1,174 Posts Drives: S65M3 Join Date: Feb 2016 Location: Texas iTrader: (39)	Thank You for the post 08 E92 Jerez Black!
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06-07-2016, 01:07 PM	#43
Gcode Enlisted Member 37 Rep 37 Posts Drives: E93 M3 & F80 LCI Join Date: Mar 2013 Location: Louisiana iTrader: (3)	I did this mod using all the parts the OP posted. Very easy and simple task, but I have a micro leak. I'm not 100% sure if the leak is coming from the threaded part in the reservoir or at the fittings. Is it safe to use plumber's tape or something similar to it?
	Appreciate 0 Quote

06-07-2016, 01:22 PM	#44
08 E92 Jerez Black Private 37 Rep 85 Posts Drives: 2008 e92 M3 6 speed Join Date: Apr 2015 Location: United States iTrader: (1)	you could, but make sure that you actually got the fitting tight as well. this is all pretty much all low pressure, so you should not have leaks. My is dry as a bone __________________
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