koni shocks rebuild...

Discussion in 'Old's Cool' started by browncycle, Aug 10, 2009.

  1. browncycle

    browncycle two-up tennessee

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    Apr 26, 2007
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    Does anybody know of a shop that will rebuild my Konis for my 1982 BMW R100S. The ones I have are about 11 or 12 years old and are feeling worn out. Bob's BMW told me that the cost of a rebuild was not that much different than new shocks, either Ikon or Works.

    Should I just buy new shocks, or can they rebuilt for less than the cost of replacement?

    Any help is appreciated. And yes, this is my first post.
    #1
  2. bmwrench

    bmwrench Long timer

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    There is a guy who advertises regularly on ebay who claims to rebuild KONIs better than new.
    #2
  3. opposedcyljunkie

    opposedcyljunkie Heavyweight Boxer

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    They could be pulling your leg. I recall a buddy who bought a rebuild kit from Ikon about 2 years ago for less than $50. He did the rebuild himself and is still happy to date.

    I suggest you shoot an email to Ikon Australia and check.
    #3
  4. c-more

    c-more Been here awhile

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    #4
  5. Rob Farmer

    Rob Farmer Long timer

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    Coincidently I rebuilt a pair last night. Very easy to pull apart. Has yours just lost the damping or is there a definate leak. Mine just needed new oil in the dampers - 85cc of 5 weight oil.

    The IKON parts are straight replacements so you can buy parts for your Konis from the IKON distibuter.
    #5
  6. drhach

    drhach We can't stop here, this is bat country!!

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    Isn't there some version of the Koni that is not rebuildable? I thought there was some issue with the later shocks being welded shut. Maybe I'm thinking of something else.
    #6
  7. Rob Farmer

    Rob Farmer Long timer

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    I've rebuilt the dial-a-rides and the earlier versions using a spring compressor and a pair of pipe grips.
    #7
  8. browncycle

    browncycle two-up tennessee

    Joined:
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    Oddometer:
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    Location:
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    Coincidently I rebuilt a pair last night. Very easy to pull apart. Has yours just lost the damping or is there a definate leak. Mine just needed new oil in the dampers - 85cc of 5 weight oil.


    There is a small leak that Nathan at Boxerworks pointed out to me. Most notably is the squishiness of the rear end when riding 2 up which wasn't there before. And I keep it on the highest setting now.

    What should I do? it looks difficult to rebuild.
    #8
  9. Rob Farmer

    Rob Farmer Long timer

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    To be honest if you don't feel confident with taking them apart I'd buy another set for $300 and forget about them for another 10 years or so.

    However, if you are comfortable with jumping into the unknown with a spanner:-

    I have a home made spring compressor that makes it easy. Most auto shops have them.
    [​IMG]

    Pipe grips make easy work of undoing the nut.

    [​IMG]

    [​IMG]

    Just drain the oil and carefully fill up with the new before putting it back together.

    I hadn't had that damper apart before. it took longer to take the photographs and post them into this thread than it did to change the oil.

    The leaking seal makes things a little more difficult. but you can buy the parts from you IKON distributor.
    #9
  10. jellycow

    jellycow Back on track.. Oh, wait, new track found!

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    So, those dampers aren't filled with some kind of gas under high pressure? I always thought they were.
    #10
  11. Rob Farmer

    Rob Farmer Long timer

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    If it was it's not anymore :evil

    They use gas in some shocks to stop the oil frothing.
    #11
  12. browncycle

    browncycle two-up tennessee

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    It appears as though everything points to a new pair of shocks. What to do with the old ones? There is a big hunk of metal in those springs.

    Also, other than Ikon, what brand of shocks would be best, without breaking my bank? I ride 2 up with my wife a lot, usually with factory luggage. I like to ride sporty, but I am by no means a knee dragger or wannabe speed racer.
    #12
  13. Wirespokes

    Wirespokes Beemerholics Anonymous

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    If you decide to replace rather than rebuild, I'd be interested in getting the old ones from you.
    #13
  14. opposedcyljunkie

    opposedcyljunkie Heavyweight Boxer

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    I suppose Ikons would fit the bill but are rather pricey at $400+ a pair but i don't know of other competent brands.
    #14
  15. Joerg

    Joerg Long timer

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    Hi,
    I would go for the stock shocks. They are still available from BMW and, AFAIK, at a reasonable price. I used them for quite a while on my TIC until they were really worn out, then replaced them (since non-repairable) by the IKONs.

    If you do not like rebuilding the KONI/IKON, sell them to a good home :D
    #15
  16. Wirespokes

    Wirespokes Beemerholics Anonymous

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    YSS and Wilbers are good. A few years ago I picked up some Ohlins for a little over $400 from Dan Kyle racing in the vendor forum. There are some good alternatives out there, but none of them are particularly cheap.
    #16
  17. opposedcyljunkie

    opposedcyljunkie Heavyweight Boxer

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    If you regularly ride 2-up and are looking at the stock shocks, better get the reinforced springs which will do a better job. A bit firm when riding solo at its softest setting (I'm 195 lbs) but very nice when hauling a passenger.
    #17
  18. Joerg

    Joerg Long timer

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    Hi,
    Do you have a reference for those?

    I could only find a single part number for the shocks, 33531231893 ...
    #18
  19. opposedcyljunkie

    opposedcyljunkie Heavyweight Boxer

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    I believe the HD springs might be the only springs they sell nowadays, and your part # checks out with MaxBMW (I could be wrong though). I concluded that when I bought a pair of new springs from my buddy, who said he got them from the dealership. The coils were visibly of greater thickness versus the old stockers I had.

    If you want, I could measure the coil thickness of what I use versus my old springs which I still have.

    One other thing I could not reconcile with my shocks was that the thicker springs had a white dab of paint on them, indicating a certain "stiffness code". The lower eyes of the struts had red marks.
    #19