replacing front shocks

Discussion in 'E9 General Discussion' started by bimoverde, Jan 9, 2019.

  1. bimoverde

    bimoverde Member

    Messages:
    47
    Likes Received:
    7
    Trophy Points:
    8
    Location:
    california
    Just bought a set of bilstein and i will attempt to replace the front shocks(i do have a hoist).. can some share with me the best way to do this.. i did not find much infos online..
     
    deQuincey likes this.
  2. deQuincey

    deQuincey Well-Known Member

    View My Showcase
    Messages:
    5,776
    Likes Received:
    496
    Trophy Points:
    83
    Location:
    bilbao
    try harder ?
    i do have a complete write up with pics
    try to find that one
     
    Last edited: Jan 10, 2019
  3. m_thompson

    m_thompson Active Member

    Messages:
    656
    Likes Received:
    40
    Trophy Points:
    28
    Location:
    Rhode Island
    I have a new, well they were new when I bought them 30 years ago, set of Boge struts that I need to install in my CS. I have been putting this project off for a very long time.
     
  4. bavbob

    bavbob Well-Known Member Site Donor

    Messages:
    1,049
    Likes Received:
    94
    Trophy Points:
    48
    Location:
    Boston, Ma
    Abridged without images
    1) Tire off, caliper off (just off, no need to disconnect, rest on or suspend from something other than strut tower)
    2) Cut the wire stringing the 3 specialized bolts on bottom of housing (cannot see unless car on lift or you on your back), remove these, think 17mm ( may need to turn steering to get access to all of them). This will separate strut housing from control arm /tie rod. You may have to give the housing a wack or turn the steering wheel a bit.
    3) Undo nuts holding strut housing under the hood. As you do this, someeone should support the housing, after all are out, you can drop the entire housing with spring and remove it. Now you go spring compressor etc on the benchtop. Keep track of order of parts as you remove the spring and strut housing bearing.
    4) I loosing the large nut holding the strut in the strut tube before I start anything. A discussion here a while back on it but I use a pipe wrench that fits between the spring coils. Just loosen. When on the bench, and spring etc are off, then unscrew and remove old strut.
    5) I grease the new strut body a bit either lithium or a bit of anti seize. Others may not do this but it helps years later to get the thing out if changing again.

    Strut housing bearing..well they are like 250 bucks each, so clean, grease etc and reuse unless totally shot.
    Order up some spring cushions from the dealer, cheap. You will want to change these.

    NB: Here in New England, the strut housing drain holes that are part of the spring support flange, get filled with sand and water sits in this trough and causes rusts. While you have them in view, clean them out.
     
  5. Markos

    Markos Dead Weight Nominee Staff Member Site Donor $$

    View My Showcase
    Messages:
    7,874
    Likes Received:
    2,051
    Trophy Points:
    113
    Location:
    Seattle, WA
    You don’t need to remove the bottom three safety wired bolts. You can undo the top three fender bolts, drop the control arm, and swing the strut away from the fender.

    If accessible, attempt to crack the strut retaining ring free before unbolting anything. Being mounted to the car, you will have much more leverage on the retaining ring. I’ve never done it that way, so the spring may be in the way.

    I posted this video last week that shows how to use an impact gun and a spring compressor to remove the spring. The next step is to remove the retaining ring. I didn’t do this in my video because the ring is not OEM and will require some type of heavy duty pin wrench. I haven’t sourced a tool yet so I am
    stick at the moment.

     
  6. deQuincey

    deQuincey Well-Known Member

    View My Showcase
    Messages:
    5,776
    Likes Received:
    496
    Trophy Points:
    83
    Location:
    bilbao
  7. bimoverde

    bimoverde Member

    Messages:
    47
    Likes Received:
    7
    Trophy Points:
    8
    Location:
    california
    thanks a lot this just the infos i needed.. will keep you posted on the installation. Hopefully i got the correct front shocks i was told there are 2 different length.
     
  8. Peter Coomaraswamy

    Peter Coomaraswamy Well-Known Member Site Donor $

    View My Showcase
    Messages:
    3,227
    Likes Received:
    421
    Trophy Points:
    83
    Location:
    Austin, TX
    DQ's write up is great, as usual- a little over-the-top, but you'll be able to fix any problem you come across by using the thread provided above, also the comments by the other contributors to that thread are priceless. My two cents would be that you look at the diagrams and be sure you get the strut bearing washers put in correctly, they go together "counterintuitively" if that's a real word? but it sucks taking them apart just to flip over a couple washers, yes, I know, I know-

    If you are using CN springs what you may find is that you hardly need a spring compressor to re-assemble the strut, but there should be some pressure against the top plate.

    Also, be sure the threaded collars are tight against the strut tubes, really tight and put a couple of ounces of ATF in the tube before putting in the strut. If your old strut won't come out or your new one won't go in you may have a bent strut housing. I have a couple extras if anyone needs one.

    Now, grab a beer and a wrench and have at it!
     
    deQuincey likes this.
  9. bimoverde

    bimoverde Member

    Messages:
    47
    Likes Received:
    7
    Trophy Points:
    8
    Location:
    california
    I have read somewhere that the factory workshop manual recommended to fill the strut with 50cc of 30w weight oil?
     
    deQuincey likes this.
  10. Honolulu

    Honolulu Well-Known Member

    Messages:
    1,462
    Likes Received:
    45
    Trophy Points:
    48
    Location:
    Honolulu Hawaii
    It was speculated, long ago, that the 500 cc oil was to enable/enhance heat dissipation.
     
  11. deQuincey

    deQuincey Well-Known Member

    View My Showcase
    Messages:
    5,776
    Likes Received:
    496
    Trophy Points:
    83
    Location:
    bilbao
    i followed the manual instructions and yes, they say engine oil
     
  12. Gary Knox

    Gary Knox Well-Known Member

    Messages:
    1,294
    Likes Received:
    196
    Trophy Points:
    63
    Location:
    West Chester, Pennsylvania
    I checked the specs in my blue book, and it says 1 oz of engine oil for the bottom of the shock in the strut - yes, for dissipation of heat, I'm sure.
     
    deQuincey likes this.
  13. Peter Coomaraswamy

    Peter Coomaraswamy Well-Known Member Site Donor $

    View My Showcase
    Messages:
    3,227
    Likes Received:
    421
    Trophy Points:
    83
    Location:
    Austin, TX
    In most of my cars engine oil and ATF are interchangeable :)
     
  14. m_thompson

    m_thompson Active Member

    Messages:
    656
    Likes Received:
    40
    Trophy Points:
    28
    Location:
    Rhode Island
    I found two part numbers for the strut bearings. The one with the short studs for '72 and earlier was quite expensive. The one with the long studs for the US '73 and later was much less expensive. I bought a set of short studs and the less expensive '73 and later bearing.
     
  15. bavbob

    bavbob Well-Known Member Site Donor

    Messages:
    1,049
    Likes Received:
    94
    Trophy Points:
    48
    Location:
    Boston, Ma
    Oil in strut tubes was based on Boge shocks, probably no need for Bilsteins.
     
  16. Markos

    Markos Dead Weight Nominee Staff Member Site Donor $$

    View My Showcase
    Messages:
    7,874
    Likes Received:
    2,051
    Trophy Points:
    113
    Location:
    Seattle, WA
    I snapped some pics of a technique you can use if your strut retainer doesn’t want to come off. A vise and a pipe wrench:


    A171690D-1AB7-4B3A-9DDD-B699717310BD.jpeg A18C2806-6844-46CA-81F0-D02C8781DDF4.jpeg
     
    Belgiumbarry likes this.
  17. m_thompson

    m_thompson Active Member

    Messages:
    656
    Likes Received:
    40
    Trophy Points:
    28
    Location:
    Rhode Island
    Get the Konis rebuilt and put them back in!
     
  18. Belgiumbarry

    Belgiumbarry Well-Known Member

    Messages:
    884
    Likes Received:
    419
    Trophy Points:
    63
    Location:
    Belgium
    did the front wheels lift ? :D
     
  19. Markos

    Markos Dead Weight Nominee Staff Member Site Donor $$

    View My Showcase
    Messages:
    7,874
    Likes Received:
    2,051
    Trophy Points:
    113
    Location:
    Seattle, WA
    Yeah I kept the konis. I’ve already tossed a set of bilsteins. The cost to rebuild bilsteins is about what they cost new.

    Ha! No but the back did sink quite a bit. This is my high-leverage vise. :)
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice