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Thread: My 87 Lt250r restoration

  1. #81
    Join Date
    Jul 2003
    Location
    PA
    Posts
    5,008
    Your LT is coming along nicely! I'm finally going to get mine back on the trails this year. Only rode it once since the last rebuild in 08, been kind of afraid of wrecking it after all the time and $$ I put into it! lol! Keep up the posts, been enjoying watching your build!

  2. #82
    Join Date
    Mar 2005
    Location
    ohio
    Posts
    31
    What did you end up doing for the wrist pin bearing? And is the piston your using a Honda TRX/ATC 250R 72mm Big Bore Piston?
    Quote Originally Posted by f150dan View Post
    I did a little research, the '87 Lt250r wrist pin bearing is 18x23x24mm and it's too wide to fit into the ATC Honda piston with the thrust washers. I cant just use a Honda wrist pin bearing because it measures 18x22x23mm so even though it's shorter, it's too small to fit Lt250 rod.

    Like I posted earlier, was planning on just taking piston to machine shop to mill it out a little but that would make it more complicated to freshen up with new piston in future if need be. So I think I found an easy alternative. A wrist pin bearing For a 77-99 RM250 measures 18x23x22mm so it's correct size for rod and it's 2mm shorter so it should allow enough room for the 2 thrust washers and proper tolerance.

    My local Atv shop had one in stock so I picked it up but haven't had time to install it yet. I hope it works and I'll keep you updated.

  3. #83
    Join Date
    Jan 2010
    Location
    Jonesboro, TN
    Posts
    169
    Yea, the piston is a 72mm piston made for a Honda ATC 250r and I had to use a Suzuki RM250 wrist pin bearing. Works great.
    '03 z400, '87 Lt250R Quadracer, '01 Lt80, '96 Lt80

  4. #84
    Join Date
    Jan 2010
    Location
    Jonesboro, TN
    Posts
    169
    '03 z400, '87 Lt250R Quadracer, '01 Lt80, '96 Lt80

  5. #85
    Join Date
    Jan 2010
    Location
    Jonesboro, TN
    Posts
    169
    Since I discovered the factory flywheel coming apart on this ole quad, I replaced it with a lightened and balanced flywheel
    from Summit Performance in FL.
    '03 z400, '87 Lt250R Quadracer, '01 Lt80, '96 Lt80

  6. #86
    Join Date
    Feb 2006
    Location
    So Cal
    Posts
    391
    I heard welding will help make it last. Nice Quadracer by the way

    Nice to see 2 stroke quads still exist!

  7. #87
    Join Date
    Jan 2010
    Location
    Jonesboro, TN
    Posts
    169
    '03 z400, '87 Lt250R Quadracer, '01 Lt80, '96 Lt80

  8. #88
    Join Date
    Jan 2010
    Location
    Jonesboro, TN
    Posts
    169
    2nd ride after installing the new flywheel, it sheared the key. Must not have been seated properly. Hopefully got that fixed after making new key cause we got another riding trip in the morning

    '03 z400, '87 Lt250R Quadracer, '01 Lt80, '96 Lt80

  9. #89
    Join Date
    Jan 2010
    Location
    Jonesboro, TN
    Posts
    169
    Enjoy a ride today at Buffalo Mtn




    Bike ran great
    '03 z400, '87 Lt250R Quadracer, '01 Lt80, '96 Lt80

  10. #90
    Join Date
    Jan 2010
    Location
    Jonesboro, TN
    Posts
    169
    Blew a head gasket on this thing today during a snow ride. I'm hoping that's what it is anyway, I haven't torn into it yet.

    Anybody got any suggestions on head gasket upgrades.
    '03 z400, '87 Lt250R Quadracer, '01 Lt80, '96 Lt80

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