Adapting a BC coilover kit to a 4matic W211
#1
Super Member
Thread Starter
Adapting a BC coilover kit to a 4matic W211
I semi-recently purchased W211 E500 4matic Estate as a winter vehicle/Home Depot hauler.
The car had a snapped rear subframe bolt so that had to get addressed along with a few other bits and pieces the first few weeks. Had the front right airbag blow out on me so that prompted the BC coilover purchase. I chose the BCs based on the reviews and write up on this board but unlike the other poster, I didn't receive very satisfactory customer support from BC. I had to chase the sales rep for nearly a week to have questions answered and get the kit ordered, and then their shipping promises were not fulfilled. Nevertheless, received the kit (J07) and dug in.
The rear corners will be identical in fit and installation, as the 4matics share the same geometry as their 2wd counterparts. The front struts, however, have a taller fork to account for the front halfshafts running to the spindles.
Easy enough Cut the original forks off...
Square the seat up, drill and tap...
Add the rod from the BC kit that threads into the body...
Weld and paint
Obviously, due to the longer forks the height adjustability available at the threaded rod to strut body junction is now limited, but I still have all the adjustment in the world with the spring and threaded body so we're good. They should be installed tonight or tomorrow, along with a couple new halfshafts and E55 AMG 18s with snows.
The car had a snapped rear subframe bolt so that had to get addressed along with a few other bits and pieces the first few weeks. Had the front right airbag blow out on me so that prompted the BC coilover purchase. I chose the BCs based on the reviews and write up on this board but unlike the other poster, I didn't receive very satisfactory customer support from BC. I had to chase the sales rep for nearly a week to have questions answered and get the kit ordered, and then their shipping promises were not fulfilled. Nevertheless, received the kit (J07) and dug in.
The rear corners will be identical in fit and installation, as the 4matics share the same geometry as their 2wd counterparts. The front struts, however, have a taller fork to account for the front halfshafts running to the spindles.
Easy enough Cut the original forks off...
Square the seat up, drill and tap...
Add the rod from the BC kit that threads into the body...
Weld and paint
Obviously, due to the longer forks the height adjustability available at the threaded rod to strut body junction is now limited, but I still have all the adjustment in the world with the spring and threaded body so we're good. They should be installed tonight or tomorrow, along with a couple new halfshafts and E55 AMG 18s with snows.
Last edited by rockthemullet; 12-08-2015 at 10:28 AM.
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slobo (03-05-2020)
#3
Super Member
Thread Starter
Welds and machining were courtesy of a good friend, it's always who ya know
I do have two extra complete E55 motors... So you never know
First 4Matic on coilovers? First 4matic with an M113k conversion?
I do have two extra complete E55 motors... So you never know
First 4Matic on coilovers? First 4matic with an M113k conversion?
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#8
Super Member
Thread Starter
Forgot to report. All together with no issues so far... the rear is a little lower than I'd like but they're a pain to adjust so I'll leave it. I'm gonna consider designing a new height adjuster that would be accessible through the center of the spring instead of using the traditional threaded collars.
The following users liked this post:
slobo (03-05-2020)