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  #1  
Old 05-28-2020, 04:36 PM
BabyUnicornTaco BabyUnicornTaco is offline
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Cost and difficulty to refresh front suspension with adaptive drive?

2008 4.8i with adaptive drive. I donít have any current issues now but down the road I know my front suspension will need some refreshing. Iím having trouble finding a refresh kit for my vehicle that has adaptive drive with the EDC shock absorbers. Anyone know the options and difficulty? Is it easier to refresh an E70 with adaptive drive EDC shock absorbers as opposed to those without? Good idea to refresh around the existing shock absorbers? Looking for some ideas and experience to prepare for the next year or two. Links to the appropriate refresh kit? Info appreciated.


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  #2  
Old 05-28-2020, 05:38 PM
ard ard is offline
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No experience w the E70, but with an E39...

So if $$$ is 'easier', then the non-EDC will be 'easier'... . Basically its some added connectors beyond the normal mechanical install.

It is good to start thinking of this...perhaps even developing your own parts list. While I love FCP euro, for example, I'd rather build my own parts kit. I never found anyone with a truly complete kit.

Basically pull up a parts diagram and start listing BMW part numbers. Then drill down on each, see who the OEM is, etc etc, Decide if you want OE or OEM or aftermarket. Heck, figure out if you'll have a choice!

There are the usual parts- struts, springs, spring perch, bumps top, all the bits and bobs in the strut/spring assembly. Then the arms- upper and lower, wheel bearing, tie rod ends, steering arm idler.

Wanna get crazy? Add in motor mounts, transmission mounts.

Moving rear wards? Driveline, Guibo, center bearing...rear diff bushes..sub frame bushes.... now you are at the rear suspension.


Finally, given the cost of the EDC, I might try to find a shop that can bench test them for you on a shock Dyno. Definitely out of the usual, but given the cost, it'd be wroth spending $few hundred to see if they are fine. I'd think very long and hard about spending 2500 to replace them, TBH.

Start a list. I'll need it in a few years.

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OE is Original Equipment aka 'BMW Original Parts' aka 'What you buy at the BMW dealer with a BMW label'

OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


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  #3  
Old 05-28-2020, 06:35 PM
BabyUnicornTaco BabyUnicornTaco is offline
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ard, I figured you would respond first. I know the list goes on and on. Itís hard holding onto an E70 with the adaptive drive and never wanting to give it up. It drives so much better than the new X5s. I wonder what chances I take with refreshing around the EDC shock absorbers without testing them. I think of difficulty as DIY possibility. If I build around the EDC shocks absorbers does it make it easier? Looks like the difficulty is in coil compression and loosening old bolts when doing a full refresh. My SC X5 has zero rust. Underside parts look nice. I debate having an Indy do it or myself. It would obviously take days to complete by myself. Iíd rather prepare now than wait for the ďclunk.Ē


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Old 05-28-2020, 09:00 PM
ard ard is offline
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Id be inclined to do everything except the EDC damper. All new mounts, bumpers, etc inside the strut assembly. And then know that you may need to bite that bullet eventually.

Or maybe find some idiot that is tearing out his EDC so he can isntall a superior 'lowering kit w KYBs'... Start looking....

Its all an easy DIY. Just mechanical work, and under a car too.
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Alignment here: The Definitive Alignment Thread

OE is Original Equipment aka 'BMW Original Parts' aka 'What you buy at the BMW dealer with a BMW label'

OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


http://www.bimmerzone.com/category/T...ricks_OEM.html

https://www.turnermotorsport.com/t-OEvsOEM
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  #5  
Old 05-28-2020, 09:56 PM
deroy deroy is offline
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Cost and difficulty to refresh front suspension with adaptive drive?

Steering arm idler? On a e70?

Is the spring that holds rack and pinion together some modern day equivalent of that maybe?


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Last edited by deroy; 05-28-2020 at 10:13 PM.
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  #6  
Old 05-28-2020, 11:21 PM
deroy deroy is offline
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OP, youíll really want an impact wrench for that kind of work. Saves you a lot of time, and especially the fiddling with ring wrenches and allen keys on the ball joints. A big enough ball joint separator is a joy too. I had to ďadjustĒ mine to make it fit and not slide off; wider jaws and filing a different angle on the tip. See pic.

Just did my LCAs, so all fresh experience here.




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Old 05-29-2020, 07:05 PM
BabyUnicornTaco BabyUnicornTaco is offline
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Cost and difficulty to refresh front suspension with adaptive drive?

Thanks for the replies. I went out for an extreme test of the suspension today to look for weak points. I found that a quick left to right steering wheel movement back and forth at low speed can produce a ďclinkĒ sound and a more extreme bump can make a squish sound. These sounds are produced under not so normal road conditions but I think it could effect high speed braking or emergency maneuvers. My first thought is inner and outer tie rods for the ďclinkĒ and maybe #7 for the squish. Thoughts? https://www.realoem.com/bmw/enUS/sho...diagId=31_0795


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Old 05-29-2020, 10:25 PM
deroy deroy is offline
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7 is just a bump stop, but itís possible. My 8/9/10 combo squishes a bit, but all visible sections are still fine.


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Old 05-30-2020, 04:16 AM
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Doug Huffman Doug Huffman is offline
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Not this of course ...

Quote:
Originally Posted by Doug Huffman View Post
Old news? New to me.

CRACKING NOISES FROM THE FRONT AXLE AREA WHILE TURNING THE WHEELS, WHEN STATIONARY OR PARKING

https://static.nhtsa.gov/odi/tsbs/20...38386-9999.pdf

Similar issues are scattered all through the product line. I noted elsewhere the highest FRU allowance that I have yet seen, 42 FRU!
.
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Old 05-30-2020, 06:16 AM
BabyUnicornTaco BabyUnicornTaco is offline
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Quote:
Originally Posted by deroy View Post
7 is just a bump stop, but itís possible. My 8/9/10 combo squishes a bit, but all visible sections are still fine.


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Itís also possible that some play between 8/9/10 is causing the squish and the clink. I still have #10 parts in my garage ready to be installed from above. I guess itís possible there is some play at that top locking nut due to degraded #10 materials.


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Old 05-30-2020, 06:19 AM
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Cost and difficulty to refresh front suspension with adaptive drive?

Quote:
Originally Posted by Doug Huffman View Post
.


Thatís interesting. I havenít seen that before. Adds to the possibilities. Does that site list all service bulletins?


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Old 06-01-2020, 01:26 PM
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Cost and difficulty to refresh front suspension with adaptive drive?

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Old 06-02-2020, 09:51 AM
BabyUnicornTaco BabyUnicornTaco is offline
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Quote:
Originally Posted by deroy View Post
7 is just a bump stop, but itís possible. My 8/9/10 combo squishes a bit, but all visible sections are still fine.


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My #10 was toast on both sides. Click image for larger version

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Old 06-02-2020, 12:46 PM
ard ard is offline
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Quote:
Originally Posted by deroy View Post
Steering arm idler? On a e70?
Thats why I prefaced my statements with "E39"



As they say, YMMV.

Also, a lot of rubber suspension parts LOOK fine. They degrade internally as well as deform and sim-aliagn, in a way that CAN be hard to appreciate when assembled.
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Alignment here: The Definitive Alignment Thread

OE is Original Equipment aka 'BMW Original Parts' aka 'What you buy at the BMW dealer with a BMW label'

OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


http://www.bimmerzone.com/category/T...ricks_OEM.html

https://www.turnermotorsport.com/t-OEvsOEM
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  #15  
Old 06-02-2020, 06:31 PM
BabyUnicornTaco BabyUnicornTaco is offline
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Cost and difficulty to refresh front suspension with adaptive drive?

Next is sway bar end links simply because they have been sitting in my garage for months. Might eliminate the left/right play at slow speeds. Give some time for the mount/shock area rebuild. There is noticeable improvement in the stability of the ride after replacing these pads (mainly the slight feeling of buckling over speed humps has disappeared). It was a great time to get rid of those seldom seen leaves. Lol. Click image for larger version

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Old 06-03-2020, 12:29 AM
deroy deroy is offline
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Originally Posted by ard View Post
They degrade internally as well as deform and sim-aliagn, in a way that CAN be hard to appreciate when assembled.

Iím trying to understand you; deforming i get, but sim aligning? Is that some anisotropical internal wear at molecule level over time or so?




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Old 06-05-2020, 03:10 PM
BabyUnicornTaco BabyUnicornTaco is offline
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Replaced a sway bar end link up front to test out my new floor jack. Easy job. When the old one was installed it didnít seem to have much play. When I took it off it goes from looking ok to this. Click image for larger version

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Old 06-05-2020, 03:43 PM
BabyUnicornTaco BabyUnicornTaco is offline
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ID:	895533 Iíll see if the new ones get rid of the front end side to side little ďclinkĒ when I finish up some other work.


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Old 06-06-2020, 05:10 PM
BabyUnicornTaco BabyUnicornTaco is offline
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Cost and difficulty to refresh front suspension with adaptive drive?

Other sway bar end link since we were talking about hidden internals that you canít see from eyeball inspection. Click image for larger version

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Edit: this was the noisy side by the way. Notice what would normally be white lubricant inside is now dirty/gritty black.
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Old 06-06-2020, 11:52 PM
deroy deroy is offline
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Did they show play when on the vehicle? Or now in your hands?


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Old 06-07-2020, 07:14 AM
BabyUnicornTaco BabyUnicornTaco is offline
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Cost and difficulty to refresh front suspension with adaptive drive?

Quote:
Originally Posted by deroy View Post
Did they show play when on the vehicle? Or now in your hands?


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A very little bit of clink and play when on the drivers side where I heard the clink while turning left and right. When off the X5, the drivers side link has a metal to metal ball joint clink just when moving by hand. Lots of grit/sand inside that I can hear when I move the ball joint around. The passenger side did not.


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Old 06-10-2020, 07:54 PM
BabyUnicornTaco BabyUnicornTaco is offline
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Did they show play when on the vehicle? Or now in your hands?


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Old 06-15-2020, 10:16 AM
BabyUnicornTaco BabyUnicornTaco is offline
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Cost and difficulty to refresh front suspension with adaptive drive?

I was finally able to test out the new front sway bar end links today. Cornering is more precise and they have eliminated the ďclinkĒ I referenced earlier when turned wheel left to right at a slow speeds. Overall, the two cheap and easy parts I replaced has eliminated any current concerns. Iíll come back when itís time to do a full job.


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