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      07-12-2018, 08:49 PM   #1
jandref321
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E70 X5M Turbocharger Removal DIY

Gents,

I went on a road trip recently and apparently it was just a bad time, because I started getting 310B codes between 65-75mph and it would put me in limp mode. I kept having to pull over, turn the vehicle off and on again, then be on my way. After doing some research I found that it was likely the wastegate arms on the turbos. I ordered a borescope off of amazon and piped it in through the oxygen sensor to verify, and found that there was a bit of play in the arm. Basically, the arm has so much play that it overextends and opens back up when it’s supposed to close. I contacted Turbo Lab America and Austin said he could do a full rebuild with wastegate replacement. I wanted an upgrade also so we threw in a Compressor wheel upgrade while we were at it. Unfortunately, he only has the compressor wheel upgrade and not the turbine so only stage 1 upgrade, not stage 2. I pulled off the turbos over two days and it took me about 4.5 hours total. When I get the turbos back I’ll post an Installation DIY with all the gaskets I bought and review the upgrade.




DIY: E70 X5M TURBOCHARGER REMOVAL

NOTE: I RECOMMEND THAT ALL MAINTENANCE IS COMPLETED BY A CERTIFIED MECHANIC;This DIY is merely a record of what I did to complete this vehicle maintenance; I DO NOT RECOMMEND COMPLETING THIS YOURSELF.

Tools Needed:
1/4” Drive Ratchet
1/4” Drive Extensions
3/8” Drive Ratchet
3/8” Drive Extensions
3/8” Drive Torque Wrench
7/8” Oxygen Sensor Socket (Cutaway Style; 3/8” Drive)
13mm Socket
14mm Socket
10mm Socket
10mm Deep Socket
8mm Socket
6mm Socket
T25 Torx Bit
T30 Torx Bit
E8 External Torx Bit
Flat Head Screw Driver
Small Flat Head Screw Driver
Needle nose pliers
Wire Cutter

STEP 1: Remove the Filtered Air Ducts and Charge Pipes
a) ENSURE YOU ABSOLUTELY REMOVE THE NEGATIVE WIRE FROM THE BATTERY TERMINAL. YOU ARE WORKING NEXT TO A LIVE WIRE AND WILL SHORT/START A FIRE WHEN THE TURBOS TOUCH THE LIVE WIRE

b) Follow this DIY for removal of Filtered Air Ducts and Charge Pipes: https://www.xbimmers.com/forums/show....php?t=1434167


STEP 2: Remove Crankcase Ventilation Heat Shield

a) Remove Driver side crankcase ventilation heat shield using T30 Torx Bit (4 bolts total)




b) Remove Passenger side crankcase ventilation heat shield using T30 Torx Bit (2 bolts and a PITA)



STEP 3: Disconnect Turbocharger Cooling Lines

a) Cut off hose clamps using wire cutters or heavy duty shears (4 hoses total)

b) Pull hoses off of hardlines, place in plastic bag, seal, and move out of the way.

c) Plug hardlines leading to turbochargers using vacuum plugs



STEP 4: Disconnect Turbochargers from exhaust manifold (Headers) and exhaust manifold with catalyst (Downpipes)

a) Loosen screw clamps connecting turbochargers to exhaust manifolds with catalyst (Downpipes) using 13mm Socket.

b) Use flathead screwdriver to press clamps apart and off of Turbocharger/Exhaust manifold with catalyst (Downpipes)

c) Loosen screw clamps connecting turbochargers to exhaust manifold (headers) using 13mm Socket.

d) Use flathead screwdriver to press clamps apart and off of turbocharger/Exhaust Manifold (Headers)

e) The turbochargers are still connected to the vehicle by oil lines and vacuum lines but should be free moving. If they are not moveable then you must work to find where the clamps are stuck on and free the clamps completely. Once the turbochargers are capable of moving, you can pull the screw clamps off completely and set them aside.



STEP 5: Disconnect Turbocharger Oil lines

a) Loosen and disconnect Turbocharger oil feed lines using 14mm socket (one for each Turbocharger)


b) Loosen and disconnect Turbocharger oil return lines using E8 External Torx Bit (2 bolts per turbo, 4 bolts total)
NOTE: Holy crap this is the hard part and took over an hour just to remove these. You must lift the turbo up and work different combinations of ratchets and extensions to get to each bolt. Super aggravating…take your time.

c) Loosen and remove bolts securing turbo charger oil feed lines to the turbochargers using E8 External Torx Bits (1 each side)


STEP 6: Remove Turbochargers

a) Carefully pull out vacuum lines from wastegate actuators

c) Carefully Maneuver Turbochargers up and out, around the fuel tank breather line.
NOTE: At this point I held the turbocharger in the air and announced that I was the greatest weekend mechanic in the world.




STEP 7: Remove hoses, hardlines, and brackets from Turbochargers

a) Cut off Charged Air Pipe bypass hose clamps using wire cutters or heavy duty shears and carefully remove them using flathead screwdriver (This took some time)

b) Loosen and remove bolts securing the turbocharger cooling system hardlines to the turbochargers using 14mm socket with breaker bar and E8 External Torx Socket (Two banjo Bolts and two E8 bolts per turbocharger)





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2003 E46 M3 SOLD aFe CAI, AP Axleback, SSK, H&R Springs, TMS CMBR Arms, PF RTABs

Last edited by jandref321; 07-12-2018 at 08:55 PM. Reason: Fix Grammatical Errors
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      07-15-2018, 06:27 AM   #2
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Nice DIY!
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      07-15-2018, 10:02 PM   #3
PrescottX5M
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Great Write up! Hope I don't get there but...
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      07-15-2018, 10:50 PM   #4
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You might be the greatest on Oahu!
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      07-16-2018, 12:03 AM   #5
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Excellent writeup
It's an easy task just time consuming
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      07-19-2018, 08:25 PM   #6
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Thanks for the support guys! It was noted on another thread that it is actually more difficult with stock catted downpipes since the cats block off where you put the ratchet to loosen the clamps leading from the exhaust manifold to the turbo. Maybe a swivel joint would help. I would hate to have to remove the DPs to remove the turbos.
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      07-20-2018, 08:59 PM   #7
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OP when you'll be putting them back - will you need new gaskets?
Also, to put back oil and cooler lines - is it just torquing them down again and nothing else is needed? Will you buy new clamps for ones you cut?
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      07-23-2018, 09:34 PM   #8
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Quote:
Originally Posted by DuSh View Post
OP when you'll be putting them back - will you need new gaskets?
Also, to put back oil and cooler lines - is it just torquing them down again and nothing else is needed? Will you buy new clamps for ones you cut?
Good Questions.

1) No one makes replacement wastegate arms/valves for the S63 Turbos. Turbo Lab America has been working with another company and my turbos to prototype a wastegate arm fix. They said it would take another month, which I don't have so Austin is going to fabricate a fix using a S63TU Arm and a different valve since it will fit. I should have them next week and be able to start the install the following weekend.

2) I looked up and ordered all the possible gaskets/O-rings that I will need on realoem.com and also ordered some extra bolts in case I loose a couple in the process. I will have a list when I complete the install DIY.

3) I have replacement crush washers for the oil lines and plan on simply hand torqueing the difficult to reach ones. There are a few companies that make special tiny torque wrenches, but the cost is significant.

4) Several hoses will require new clamps. I plan on using generic hose clamps that I already have on hand to replace them instead of the stock style clamps.
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2012 E70 X5M CURRENT Stg 1+ Turbos, DPs, Velos Stg 2+, JB4, Race Cats, Bavauto Coils
2011 F10 535i SOLD Burger Tuning JB4, BMS CAI
2003 E46 M3 SOLD aFe CAI, AP Axleback, SSK, H&R Springs, TMS CMBR Arms, PF RTABs
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      09-07-2018, 08:40 PM   #9
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Got the Turbos back! Rebuilt internals, replaced wastegate valves and bushings, upgraded compressor wheels, clipped turbine wheels, ceramic coating. I have installed them but my aux water pump took a dump so waiting on a new one for review, etc. Will make the install DIY sometime in the next couple of weeks.


(I actually stole the left image from M5James):

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2003 E46 M3 SOLD aFe CAI, AP Axleback, SSK, H&R Springs, TMS CMBR Arms, PF RTABs
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      09-07-2018, 11:43 PM   #10
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Oh this is inspiring to me. I am in the throws of tearing apart my engine now. I need to replace the turbo oil return cover. The service instructions call for taking off the cats.

Did you reuse the metal v-band clamps on the turbo charger?
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      09-08-2018, 12:51 AM   #11
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Quote:
Originally Posted by Ryan5034 View Post
Oh this is inspiring to me. I am in the throws of tearing apart my engine now. I need to replace the turbo oil return cover. The service instructions call for taking off the cats.

Did you reuse the metal v-band clamps on the turbo charger?
I had to take off the cats due to another diy while waiting for the turbos to come back...it’s way easier to install (therefore pull out) the turbos with them off. I know the service manual actually calls for you to remove the alternator and oil return pipes, but i worked around it.

I did reuse the v band clamps...and I have pulled them off before and reused them. Just make sure you get new gaskets and take your time putting them back on
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      09-11-2018, 03:59 PM   #12
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FOLLOWING!
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      09-12-2018, 12:17 AM   #13
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Great write up, I was hoping a full blown upgrade would be possible with the stock turbos. I will be eyeing PureTurbos as an $$$$ option. Appears to be several hoses to replace while in there. Looking forward to read8ng your impressions.
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      09-14-2018, 09:12 PM   #14
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Just a heads up, much easier to remove the oil drain hoses from engine side with an extension rather than turbo side. Removes quite a lot of time and struggling from this process. Also order a set of flex head ratchet wrenches off amazon if you have stock catted downpours and it will also save a lot of struggling. You can have both turbos out in under 3 hours

Also cti turbo which is a branch of comp turbo can rebuild or upgrade stock turbos, then they balance to a believe it was 100k rpms and provide a warranty for just under a thousand dollars. So that is another option available that no one ever seems to mention.

While doing this job I would also recommend replacing whatever wastegate vacuum lines you can get your hands to.
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