XBimmers.com | BMW X6 Forum X5 Forum
 
TireRack





Go Back   XBimmers.com | BMW X6 Forum X5 Forum > BMW X5 Forums > General BMW X5 (E70) and X5M Forum (2006-2013)

Post Reply
 
Thread Tools Search this Thread
      10-07-2019, 05:25 PM   #1
aligoodn
New Member
12
Rep
5
Posts

Drives: 2011 X5M
Join Date: Feb 2018
Location: Augusta, GA

iTrader: (0)

X5M Mid Life Overhaul

In 2016, I found a killer deal on a 2011 X5M. My wife had been making noises about wanting an SUV, and practicality was never something I was good at so I pulled the trigger. The car had 74k on it and it had been a lease. It also had some no-name tires on it and a few minor oil leaks but had no major codes and seemed like it wouldn't be a total money pit. Someone had spent good money on a full akrapovic titanium exhaust (no downpipes). I had already prepared my wife for the love/hate relationship that goes with used BMWs with my E39 M5.

Home alignment


I did some normal maintenance over the next year or so: turbo cooling pumps, fixed a few coolant leaks, brakes, fluids, etc but had no major issues with the car.

New Michelin tires (never heard of Saffiro as a tire brand)


Got the bug a bit later and did the LED headlight retrofit. I was able to source some used LED headlights with the proper beam pattern by hunting ebay for wrecked cars. It really improves the front end appearance of the car and gets rid of the yellow angel eyes.


Fixed the infamous crankcase vent line and a few coolant leaks


Started to notice a few things as another year of ownership went on. This car creates volcanic levels of heat under the hood, mostly from the cats and the way a hot-V engine is configured. I was starting to have oil leaks from pretty much everywhere and the car began to drop into limp mode occasionally, especially on cold mornings. I wanted to fix all of those issues, because I really do like the car and so does my wife. So, I planned the busiest two weeks of my life and planned to pull the engine and take care of all of these problems. Anyone who has worked on one of these knows that access is horrible to anything so I was looking forward fixing lots of my problems with the engine out and easy access.

Starting with a little garage configuration. You can see the oil the X5 has been leaving on my garage floor. Stack of new parts and a parts washer.


Car on the lift for awhile, oil on everything



Exhaust dropped


Driveshaft nut removal


All things considered, this engine is really designed to be removed easily. Pretty much all of the fittings are quick disconnect and the wiring harnesses are easily moved around. If I had to do it again, I could probably have this engine out in a full day instead of the two it took me.

I did have several complications, because of my four post lift, I have to completely disassembly the front suspension to get the subframe out in between the lift ramps. The factory manual assumes you're doing this on a two post, where you can just drop the entire front driveline out of the bottom of the car.

Engine lowering out of the car



Finally free


I used a harbor freight 1000lb lift table, which made this job pretty straightforward

Quite a large powertrain


Time for teardown


I took detailed pictures all the way around the engine to document electrical connectors and hose routing, a must for anyone tacking this type of job and I referenced them many times as I reassembled the engine. I won't spam them here, but just a tip.

Growing pile of parts


Trans separated from the engine



One of the major oil leaks I had was the turbo oil return cover in the valley of the engine


Makes sense as this is probably the hottest part but also a safety issue because the exhaust manifold is right above this. I would expect any X5M of similar mileage and age to have a leak here.

Servicing transmission mechantronics



Removing cams in preps for walnut blasting


So instead of rolling the engine over to do each port, I decided to just pull the cams to close all of the intake valves and proceed to walnut blast the intake without worry of screwing up and filling a cylinder with abrasive. Turns out at 120k miles, the ports were pretty bad.



After some walnut shell


I used the cheap 20lb harbor freight blaster and a shop vac


After cleaning the intake ports, it was time to do valve stem seals (common N63 failure item) and timing chains and chain guides. I rented the AGA master valve stem seal kit from ebay, and I would not recommend trying to do this job without it.

Pulling injectors


HF leakdown tester and AGA tool kit for valve stem seals


Timing chain guides looked pretty good and the chain was not excessively stretched. Looks like either these were done before or the S63 does not suffer the same issues in this department as the N63. I replaced them anyways since I already had the parts.


Valve steam seal


Had to modify the HF leakdown tester to fit down the spark plug well. Just used a flap disc to grind off the flats


Timing the engine, new VANOS adjusters


Cams back in and everything cleaned up


Fixing stripped threads from someone else who worked on this car


Valve cover gaskets renewed and installed


Brand new fuel injectors (also a common item). Don't forget to write down the numbers as you will need to enter them into the ECU.


Oil pan all cleaned up


Oil cooler bypass valve (failed to keep max oil flow through the cooler)


New gasket and all installed. The oil pan gasket was one of the major sources of leakage. Make sure to use plenty of permatex around the seams where the front and rear covers meet.


Oily and dirty front cradle


All cleaned up


Engine reassembly in progress


Stock downpipes with cats removed and Jet Hot coated. Trying to remove as much heat as possible from this engine bay. I also had the turbo manifolds coated.


Heat shields and wiring in progress


Wheels refinished while the car was down


The stock PCV system allows crankcase vapors to be sucked directly into the intake manifolds or to the suction of the turbos. I wanted to delete all of the piping associated with the intake manifolds because that's what cracks and results in vacuum leaks and oil leaks. I created these blockoffs with the factory connectors and a hose plug from summit.


Installed on the car


Engine assembled and ready for reinstallation


Lining up the engine


Halfway there


Engine reinstalled and dual catch can setup configured


The catch cans allow crankcase pressure to vent to the intake of the turbos, but get filtered. I am hopeful that this will mitigate the carbon buildup I saw in the future.

In addition to all of this work, I installed a lower temp engine thermostat. Combined with the oil thermostat, the cooldown cycle after the car is turned off is now drastically shorter and the amount of heat in the engine bay is noticeably less. I didn't take any good measurements, but I am hopeful that the seals I replaced will last longer than the original ones.

To account for the downpipes, I installed a VF stage 2 tune which has also been amazing and really transforms the X5. The only additional mod I did for the tune was installing a set of NGK 97506 plugs and gapping to 0.022". The hesitation when you pull away from a stop is gone and the X5 feels almost effortless to drive. Highly recommended for anyone looking for a tune.

That's all for now. I hope to enjoy this car for many years to come.
Appreciate 8
      10-07-2019, 05:53 PM   #2
pdX5M
Second Lieutenant
pdX5M's Avatar
United_States
70
Rep
217
Posts

Drives: E70 X5M
Join Date: Dec 2018
Location: Portland, OR

iTrader: (0)

Garage List
2013 BMW X5 M  [0.00]
Awesome work and great write up man!

I'm getting close to 75k miles and have some maintenance items I need to get to as well. Would definitely like to install a dual catch can setup one of these days. Did you use any diagrams for the catch can install? Haven't done a ton of research on it but I know the write ups on how to install a dual catch can on an N63 don't 100% translate over to an S63.
__________________
2013 X5 M - Silverstone Metallic w/ Black Perforated Full Leather - All OEM Options - 12.5mm/20mm Spacers - Velos Stage 2 - AA Catless - PTP Blanket - K&N Drop Ins - Full WeatherTech
Appreciate 0
      10-07-2019, 06:10 PM   #3
Sophisticated Redneck
Second Lieutenant
132
Rep
280
Posts

Drives: 2012 BMW X5 50i
Join Date: Jul 2018
Location: AZ

iTrader: (0)

Wow great write-up and I am Jealous of your lift! I am doing the exact same thing on my 50i but the ceiling is to low for a lift in the garage so doing it the painful way...I decided to pull the heads too as the pistons were pretty bad I am going to JB4 it after I am done.

I noticed you blocked off the intake ports to the CCV system. I have about 50K on my catch-can setup and I originally tried this too however at Idle there was not enough airflow at the turbo inlets to provide sufficient vacuum for the crank case, even with new valve guide seals you may notice an uptick in oil consumption. If this happens, will have to reconnect the intake lines and you might want to add bronze microfliters to you CCV setup. These catch everything , even water vapor is condensed and caught. Ironically, the cheapy 20 dollar units on Amazon have these build in already. And if you want to go all out, add adjustable vacuum valves and tune it to -8psi at Idle, it makes a big difference in off-idle throttle response and torque and will act as a two way valve to block pressure during boost.

Also if your really want to reduce the underhood temps, you have to get some airflow in there it is a tomb as you know. Take off the seal on your rear partition and trim the water deflection seal on the that covers that but up against the windshield by half an inch. With these two mods you will vastly improve airflow across the top of the engine. I still think BMW purposely designed it this way as to keep people coming back for repairs. Nearly all issues with the N63 and S63 are directly related to the lack of airflow and cooling in the engine compartment. I have driven through insane Arizona Monsoon storms without and issue this way and very little water will leak past. Plus you get to hear cool turbo noises easier =)

Last edited by Sophisticated Redneck; 10-07-2019 at 06:43 PM..
Appreciate 0
      10-07-2019, 06:40 PM   #4
RichardH
Private First Class
RichardH's Avatar
South Africa
14
Rep
149
Posts

Drives: X5M
Join Date: May 2007
Location: South Africa

iTrader: (0)

Wow what an amazing write up!!
Thank you
Tell us more about the thermostats
Appreciate 0
      10-07-2019, 07:05 PM   #5
aligoodn
New Member
12
Rep
5
Posts

Drives: 2011 X5M
Join Date: Feb 2018
Location: Augusta, GA

iTrader: (0)

Sophisticated Redneck - I went with my plumbing configuration based on other engines that I've seen vented this way, but I will continue to monitor the oil use. My E39 M5 factory PCV system vents the crankcase breathers into the intake tract before the throttles so it would be similar to how I plumbed this. At low loads there shouldn't be much blowby and really the crankcase vapors just need somewhere to go, not much pressure differential is required. At high loads, crankcase pressure rises and the turbo suction pressure should drop due to dp over the air filters and the crankcase pressure should remain nominally neutral. More time is required to see if my solution is adequate.

Thanks for the tip on the rain deflector, I will pull that off to help things out under the hood.

RichardH - For the engine thermostat, I used this: https://www.bmwlogicseven.com/?tag=n63 and for the oil thermostat I used this: https://n63intake.com/product/n63-n6...-cooler-valve/. The first few times I ran the car afterwards I would get codes for the engine temperature being too low at shutdown and off the cooldown curve the ECU expects but the ECU seems to have adapted to the new setup and I don't get anymore faults now.

The coolant temp stays around 90C now and the oil temperature is slightly higher. As documented elsewhere, the factory oil temp gauge lies (indicates colder than actual) and now the needle sits a bit to the left. Actual oil temperatures run around 95C.
Appreciate 0
      10-07-2019, 10:32 PM   #6
Lviv777
Private First Class
9
Rep
149
Posts

Drives: 11 X5, 01 525i
Join Date: Oct 2017
Location: Calfiornia

iTrader: (0)

Fantastic write up! Did you do any service to the differentials?
Appreciate 0
      10-07-2019, 10:36 PM   #7
aligoodn
New Member
12
Rep
5
Posts

Drives: 2011 X5M
Join Date: Feb 2018
Location: Augusta, GA

iTrader: (0)

I did do the seals and orings on the front differential since I had to remove it anyways. Other than that I changed all the fluids when I first got the car at 75k and did it again this time. The transfer case seems to be the harshest on fluid just based on observation when it was drained.
Appreciate 0
      10-08-2019, 03:33 AM   #8
0-60Motorsports
Colonel
0-60Motorsports's Avatar
Bahrain
469
Rep
2,599
Posts

Drives: BMW M3 JB 04 Coupe
Join Date: Aug 2007
Location: Kingdom of Bahrain

iTrader: (1)

Excellent work. Love the attention to detail but was it really necessary to drop the motor? Ive done both the major leak jobs you had (turbo and Sump) with the motor in the car.

Since the temps here in Bahrain are 125f and 100% humidity I am planning to do the thermostat and oil thermostat mod on my next oil change.

Just wanted to ask what made you decide to go for a the $200 version when on ECS it is half the price...
https://www.ecstuning.com/b-hamburg-...37586885-90c~/
Different brands? OEM vs OE?

I will be ordering this https://n63intake.com/product/n63-n6...-cooler-valve/ from them as I think it'll help greatly in our heat

Thanks for the links.
__________________
Current Mods:
2004 E46 M3cs JB/CSL
2010 E70 X5M AW/BLACK
2011 VW Golf R DSG White/Black
IG: @060Motorsports
Appreciate 0
      10-08-2019, 07:40 AM   #9
CANGRKE70
ΜΟΛΩΝ ΛΑΒΕ
CANGRKE70's Avatar
Canada
762
Rep
170
Posts

Drives: 2012 BMW X5
Join Date: May 2015
Location: Toronto

iTrader: (0)

Awesome work. Don't know if I have the time, patience or expertise to take on such a project. Thanks for sharing.
Appreciate 0
      10-08-2019, 06:43 PM   #10
aligoodn
New Member
12
Rep
5
Posts

Drives: 2011 X5M
Join Date: Feb 2018
Location: Augusta, GA

iTrader: (0)

You can't get the intake manifolds off these engines without removing them. The manifolds are too close to the frame rails in the engine bay so if you're doing walnut blasting you don't really have a choice.

The rest of this work, for the most part, could be accomplished without removing the engine just with significantly more frustration.
Appreciate 0
      10-08-2019, 08:56 PM   #11
Sophisticated Redneck
Second Lieutenant
132
Rep
280
Posts

Drives: 2012 BMW X5 50i
Join Date: Jul 2018
Location: AZ

iTrader: (0)

Quote:
Originally Posted by aligoodn View Post
You can't get the intake manifolds off these engines without removing them. The manifolds are too close to the frame rails in the engine bay so if you're doing walnut blasting you don't really have a choice.

The rest of this work, for the most part, could be accomplished without removing the engine just with significantly more frustration.
You can but you have to pull the heads and this ends up being much more work and taking much longer then pulling the entire engine like you did (and thus why BMW tells its techs to do it this way also) and adds another 300 dollars in head gaskets and bolts to the cost. But for those of us without a lift.....on the plus side I will take advantage of them being off and clean up the carbon on the pistons and combustion chambers.
Attached Images
 
Appreciate 1
      10-09-2019, 04:21 PM   #12
frankenm
Second Lieutenant
frankenm's Avatar
49
Rep
285
Posts

Drives: 12' X5M, 99 M3
Join Date: Jan 2016
Location: San Diego

iTrader: (0)

Excellent work

So much carbon buildup .... canít wait to tear mine apart and clean it
Appreciate 0
      10-10-2019, 02:16 PM   #13
Webb70
Captain
Canada
75
Rep
802
Posts

Drives: Bmw M3, X6M, 2 Ducati 1098's
Join Date: Oct 2012
Location: Toronto

iTrader: (3)

Amazing work, can you do mine this weekend?

Lol
__________________
Kiss French, Drive German, and Ride Italian....
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 01:40 AM.




xbimmers
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST