R100GS Nissin 4-piston caliper conversion

Discussion in 'Airheads' started by Solo Lobo, Apr 7, 2005.

  1. R-dubb

    R-dubb Dubbious Adventurer

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    Here is what I'll be mounting. In fact, I may have an extra caliper since I bought a pair on eBay. Not 100% sure which hand I'll be using since either could work in slightly different positions on the rotor. Does it matter whether the line banjo is at the top or bottom when the caliper is mounted?

    [​IMG]
    #41
  2. Wirespokes

    Wirespokes Beemerholics Anonymous

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    For bleeding purposes it's best to have the bleeder at the high point.
    #42
  3. rubicon1979

    rubicon1979 Poser

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    Well my R100GSPD had got to where it would just slow down instead of stop. Took it to the dealer they said I had some random caliper off some random BMW, a bad rotor, unknown master cylinder, etc and I needed to pay them $1200 to fix my brakes. I got to reading and went and got my bike.

    With the help of this thread I found a caliper from a 94 GSXR 1100 that is a 6 pot Tokico for a good deal on Ebay. My buddy made a bracket similar to the ones used here and so far it is much better than stock. I still think it has some real room for improvement though.

    My brake line has a date, 03/89, so it is quite old. I've found a couple of places who will make custom SS brake lines so tomorrow I'm gonna call around to check on that. I'll need it to go to my factory master cylinder but with a banjo fitting on the caliper itself so it shouldnt be anything strange. Anybody know what thread pattern goes into the master?

    After reading I'm still a little confused on changing the master cylinder out. As it is now the lever wont touch the throttle but still doesnt seem to have the clamping force I think it should. Will going to the bigger master help this? If so where would I get one? I see to get a BMW one but what do I need to tell the dealer to get that part? I'm not a mechanic by no means so any other advice is appreciated.

    I'll get some pics in the next day or two.


    Thanks for the thread, it saved me some money and improved my brakes.

    Damien
    #43
  4. Solo Lobo

    Solo Lobo airhead or nothing

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    Damien,

    The SS brake line is a must, and the brake pads do take some time to bed in. In my case, there was a ridge on the top edge of the rotor that the pads of the nissin had to scrub off before the pad make really good contact with the rotor.

    I am running the stock master cylinder and have two-finger braking!
    #44
  5. rubicon1979

    rubicon1979 Poser

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    Well the new brake line came in along with some new pads and now its 2 finger front wheel lock ups. All total it ran about $250 which is almost $1k less than the dealer quoted me to replace my stock system. Here is a pic I took, fresh with brake fluid from the 27th time bleeding it.

    The caliper is supposedly from a 1994 Suzuki GSXR 1100 but dont hold me to that, its just what the Ebay auction said. The bracket was really simple to make and the caliper was within .020 of being centered so we just mounted it right up.





    [​IMG]


    :clap
    #45
  6. Solo Lobo

    Solo Lobo airhead or nothing

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    Nice Job :clap

    Let's see a close-up shot of your bracket!
    #46
  7. Stagehand

    Stagehand Imperfectionist

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    Looks like I've got some work to do.
    #47
  8. Solo Lobo

    Solo Lobo airhead or nothing

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    bump for lesman
    #48
  9. Steve in NZ

    Steve in NZ scared/cheap

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    i do hav a CAD drawing that John did but can not post it as acrobat reader

    email me and I can send bellsj@xtra.co.nz
    #49
  10. datchew

    datchew Don't buy from Brad

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    Ok people, here's an update. After scouring ebay and past posts, I have ascertained that there is in fact a specific caliper needed for this job.

    Needs to be:

    59100-20C02 front caliper assy right hand
    59300-20C02 " " " " " " left hand. [FONT=&quot]

    These are numbers i was able to dig up from various fiche parts from suzuki. If anyone is capable of verifying, i'd like to know.

    Anyway, looks like you need the left hand caliper and then rotate it 180 and put it on the GS with the bracket.

    The particular caliper was made for 1993 - 1995 gsxr's and looks like this


    [/FONT]
    #50
  11. Zebedee

    Zebedee Been here awhile

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    Thanks for the info, but +1 on the verification please.
    #51
  12. datchew

    datchew Don't buy from Brad

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    Apparently, I'm no caliper recognition expert. Just noticed that there is a 4-pot and 6-pot tokigo. Lesman's picture and the one directly above (from ebay) show a 6-pot. SOLO LOBO's is the 4-pot.
    #52
  13. Solo Lobo

    Solo Lobo airhead or nothing

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    And mine's a Nissin 4-piston not a Tokiko....
    #53
  14. datchew

    datchew Don't buy from Brad

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    ya, just rub it in. :cry
    #54
  15. Wirespokes

    Wirespokes Beemerholics Anonymous

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    I thought it was a 4 pitson caliper. :huh
    #55
  16. bmwblake

    bmwblake upside down parker

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    alright, i'm jumping in. the curiousity is getting me.

    do the tokico 6 pots have the part number on the caliper somewhere?
    there's a lot of stuff on ebay, but nothing has part numbers listed.

    solo, go ahead and PM me the pdf. i'll need it sometime i'm sure.
    #56
  17. Solo Lobo

    Solo Lobo airhead or nothing

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    Blake, I can't pm the file.... pm me your email and I will send it along to you.

    If anyone wants to take a picture of the pdf, and host it in this tread PLEASE FEEL FREE!
    #57
  18. bmwblake

    bmwblake upside down parker

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    i had to move some things around to keep the display size within the allowed attachment size. this should work and keep solo's email box a bit cleaner.

    Attached Files:

    #58
  19. Solo Lobo

    Solo Lobo airhead or nothing

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    hee hee, I have a six-piston nissin in the mail to my house right now...:evil
    #59
  20. Wirespokes

    Wirespokes Beemerholics Anonymous

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    A Tokico six should be showing up here any day now!
    #60