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Thread: 1986 Tri-Z front fork rebuild Help.

  1. #1
    Join Date
    Mar 2010
    Location
    WNY
    --
    517

    1986 Tri-Z front fork rebuild Help.

    I need to rebuild the forks on my 86 Z. I need new fork seals, dust covers and fork boots. Where's the best place to get these parts from? I see Ebay has fork boots in red for about $25. I was also thinking of getting the Progressive springs from Dennis Kirk. How hard of a job is this rebuild going to be? Also what weight oil should I use? I weigh 250lbs. Thanks.

    85 Big Red 250ES
    01 Scrambler 90 (Sons')


    Past Machines:
    96 Yamaha V-Max 600, 86 200x, 84 200es, 82 70, 82 200, 03 Bombardier DS650, 93 Ski-doo Formula Plus, 87 Ski-doo Stratos, 83 Yamaha XT550, 82 Kawasaki KDX175. 84 Tecate, 86 Tri-Z, 91 CR250.

  2. #2
    Join Date
    Oct 2010
    Location
    Oklahoma
    --
    94
    I just bought a set of yamaha oem fork seals for my 86 forks for $14.00 shipped off of ebay. I just did a search on the part #3XV-23145-00-00 and found that the 87-88 TZR250 use the same seals. I think this guy still has a set of them, offer him $6.00 each and he will take it. http://cgi.ebay.com/ebaymotors/NOS-Y...item2eb276bfe8. Hope this helps, they are like $9.89 each from cheapcycleparts.
    1986 Tri-z PV/39.5mm Carb/Total restoration in progress...
    1985 Tri-z
    1984 200es Big Red
    1984 Honda ATC70
    2001 Honda RC51
    3wheelerworld Feedback: http://www.3wheelerworld.com/showthr...ht=#post988819
    My Ebay link: http://myworld.ebay.com/n2bvr

  3. #3
    Join Date
    Mar 2010
    Location
    WNY
    --
    517
    anybody else?

    85 Big Red 250ES
    01 Scrambler 90 (Sons')


    Past Machines:
    96 Yamaha V-Max 600, 86 200x, 84 200es, 82 70, 82 200, 03 Bombardier DS650, 93 Ski-doo Formula Plus, 87 Ski-doo Stratos, 83 Yamaha XT550, 82 Kawasaki KDX175. 84 Tecate, 86 Tri-Z, 91 CR250.

  4. #4
    Join Date
    Oct 2010
    Location
    Tucson
    --
    1,652
    There's alot of bikes seals that will work,, just rebuilt mine and used rm 80 fork seals! 2001 and under years work, as far as oil im 210 and used tranny fluid! If you do a search you will find alot of people use transmission fluid!!


    JUST SEEN ITS A 86 THESE SEALS WILL NOT WORK ON YOU TRIKE! Mine is a 85 your fork tubes are bigger, there sould be a cross reference guide on google to find what will work for the 86
    Last edited by badass350x; 03-06-2011 at 08:17 AM.

  5. #5
    Join Date
    Mar 2010
    Location
    WNY
    --
    517
    Are the progressive springs worth getting? And do the 85 and 86 use the same size fork boots?

    85 Big Red 250ES
    01 Scrambler 90 (Sons')


    Past Machines:
    96 Yamaha V-Max 600, 86 200x, 84 200es, 82 70, 82 200, 03 Bombardier DS650, 93 Ski-doo Formula Plus, 87 Ski-doo Stratos, 83 Yamaha XT550, 82 Kawasaki KDX175. 84 Tecate, 86 Tri-Z, 91 CR250.

  6. #6
    Join Date
    Nov 2009
    Location
    just below the bridge, Michigan
    --
    1,147
    85 and 86 are different diameters, 86 is larger.

  7. #7
    Join Date
    Mar 2010
    Location
    WNY
    --
    517
    Ok, just ordered new red fork boots of Ebay. Later in the week I'll be ordering the progressive springs.

    85 Big Red 250ES
    01 Scrambler 90 (Sons')


    Past Machines:
    96 Yamaha V-Max 600, 86 200x, 84 200es, 82 70, 82 200, 03 Bombardier DS650, 93 Ski-doo Formula Plus, 87 Ski-doo Stratos, 83 Yamaha XT550, 82 Kawasaki KDX175. 84 Tecate, 86 Tri-Z, 91 CR250.

  8. #8
    Join Date
    Jan 2006
    Location
    conesus lake NY
    --
    11,894
    Blog Entries
    1
    Quote Originally Posted by puggerton03 View Post
    Ok, just ordered new red fork boots of Ebay. Later in the week I'll be ordering the progressive springs.
    your on the right track ,,20 wt oil and try to get yamaha oem seals .. I havent check in a wile if I could get them but seeing how I blew mine out on the dunes,, ill be checkin into it.

  9. #9
    Join Date
    Mar 2010
    Location
    WNY
    --
    517
    Let me know where a good place to get them is. Where can I get new dust covers? Thanks.

    85 Big Red 250ES
    01 Scrambler 90 (Sons')


    Past Machines:
    96 Yamaha V-Max 600, 86 200x, 84 200es, 82 70, 82 200, 03 Bombardier DS650, 93 Ski-doo Formula Plus, 87 Ski-doo Stratos, 83 Yamaha XT550, 82 Kawasaki KDX175. 84 Tecate, 86 Tri-Z, 91 CR250.

  10. #10
    Join Date
    Oct 2002
    Location
    Northeast
    --
    17,489
    Same part number as the 250R 11-1127; I searched that number and paid 54$............

    Otherwise they range 75-90$.
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

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