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Thread: 1981 250r and a 1984 250r

  1. #1
    Join Date
    Jul 2004
    Location
    minnesota
    --
    689

    1981 250r and a 1984 250r

    will a 1981 250r engine bolt in the frame of a 1984 250r and if so, do i have to use the 81 wiring harness with it or does that interchange also??
    my trikes:
    1983 honda atc 200x-k&n filter
    2002 yamaha raptor 660r, yoshimura slip on, prm grab bars
    1978 chevy nova, 454 v8, bds blower, 150hp shot of nitrous, full roll cage, a real power house.
    1991 chevy s10 4x4 350v8.
    1986 250sx
    YES its fast NO you cant ride it.

  2. #2
    Join Date
    Jan 2005
    Location
    Springfield
    --
    328
    81-84 are same engines

  3. #3
    Join Date
    Jul 2004
    Location
    minnesota
    --
    689
    ok i did not know this, thanks for answering my question.
    my trikes:
    1983 honda atc 200x-k&n filter
    2002 yamaha raptor 660r, yoshimura slip on, prm grab bars
    1978 chevy nova, 454 v8, bds blower, 150hp shot of nitrous, full roll cage, a real power house.
    1991 chevy s10 4x4 350v8.
    1986 250sx
    YES its fast NO you cant ride it.

  4. #4
    faf_racing's Avatar
    faf_racing is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Jan 2005
    Location
    pensacola florida
    --
    187
    get the motor bolted in then the wiring?? use what most accomadates it like headlites taillites etc....

  5. #5
    The shifter shafts are different, the 81-82 will hit the frame on a 83-84
    1985 350x
    1985 350x
    1985 250r
    200 auto x
    1984 250r
    1982 250r
    85 Tecate
    86 Tri Z
    85 TRI Z
    98Wolverine
    99TRX 300

    I need a 86 250r Headlight lens!!!! Hook me up!!!!









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    http://www.3wheelerworldforums.com/s...ad.php?t=42267

  6. #6
    Join Date
    Jun 2003
    Location
    South of Rochester, NY
    --
    3,470
    Quote Originally Posted by raptor
    81-84 are same engines
    Not exactly.... the shifter shift is longer on the 81-82 motors. It will NOT fit into the 83-84 frame w/o changing the shaft. The connections for and the CDI's themselves are different in the wiring harness.

    Bruce

    PS - Posted at the same time there Blazer... didn't mean to repeat the info!
    '85 ATC350X - "Showgirl" '86 OEM plastics/Fork boots, Rear Axle/Rotor/Hubs, Hondaline Fender stabalizer/extender, Speedo/Tach, Tank cover.
    '86 ATC350X - 'Go-Go Girl'
    '82 ATC250R - 'California Girl' - Progressive springs F and R, Hondaline HL Guard, Fairing and Speedometer.
    '82 ATC250R -'Snow Bunny' Ice Racer, Very Clean, Hondaline Fairing, custom FT tire, will put in the 300R motor
    '70 US90 'Ol'Girl" - Aquarius Blue... all original seat and tires. Resto project in the future
    '85 ATC250ES-'Workin' Girl' CMP Footguard, Hondaline Mudflaps, Speedo, HL Lens, Block Heater, Work Light, Foot Peg Covers and Cooler Rack
    '85 ATC70 - All Original

    '84 Yamaha 225DX - Durablue +3" axle, DR motor, New Plastics, Foot, Hand and HL Guards.
    '85 Yamahauler - Gun Rack & 'Nerf Bars'
    '85 Yamahauler - Nearly together and restored
    '83 Suzuki ALT125 - Pieces
    '89 Suzuki LT-4WD - Token Golf Cart

  7. #7
    Join Date
    Jan 2005
    Location
    Springfield
    --
    328
    im sorry for my in-correct question. thanks for backing me up. i did not no this difference!

  8. #8
    Join Date
    Jul 2004
    Location
    minnesota
    --
    689
    ok so what exactly will the shift shaft hit, can that part be bent at all to clear because i realy want to change frames becuase the 84 has way better suspention and brakes and the styling is way nicer.
    my trikes:
    1983 honda atc 200x-k&n filter
    2002 yamaha raptor 660r, yoshimura slip on, prm grab bars
    1978 chevy nova, 454 v8, bds blower, 150hp shot of nitrous, full roll cage, a real power house.
    1991 chevy s10 4x4 350v8.
    1986 250sx
    YES its fast NO you cant ride it.

  9. #9
    Join Date
    Jun 2003
    Location
    South of Rochester, NY
    --
    3,470
    It will hit the frame of the 83-84 frame, so you will need a shifter shaft out of a 83-84 motor. You can't really modify the frame to avoid this.

    Bruce
    '85 ATC350X - "Showgirl" '86 OEM plastics/Fork boots, Rear Axle/Rotor/Hubs, Hondaline Fender stabalizer/extender, Speedo/Tach, Tank cover.
    '86 ATC350X - 'Go-Go Girl'
    '82 ATC250R - 'California Girl' - Progressive springs F and R, Hondaline HL Guard, Fairing and Speedometer.
    '82 ATC250R -'Snow Bunny' Ice Racer, Very Clean, Hondaline Fairing, custom FT tire, will put in the 300R motor
    '70 US90 'Ol'Girl" - Aquarius Blue... all original seat and tires. Resto project in the future
    '85 ATC250ES-'Workin' Girl' CMP Footguard, Hondaline Mudflaps, Speedo, HL Lens, Block Heater, Work Light, Foot Peg Covers and Cooler Rack
    '85 ATC70 - All Original

    '84 Yamaha 225DX - Durablue +3" axle, DR motor, New Plastics, Foot, Hand and HL Guards.
    '85 Yamahauler - Gun Rack & 'Nerf Bars'
    '85 Yamahauler - Nearly together and restored
    '83 Suzuki ALT125 - Pieces
    '89 Suzuki LT-4WD - Token Golf Cart

  10. #10
    Join Date
    Jul 2004
    Location
    minnesota
    --
    689
    like does it hit by like a half inch or so or more??? and does anyone have a pic of the part of the frame that it hits.
    my trikes:
    1983 honda atc 200x-k&n filter
    2002 yamaha raptor 660r, yoshimura slip on, prm grab bars
    1978 chevy nova, 454 v8, bds blower, 150hp shot of nitrous, full roll cage, a real power house.
    1991 chevy s10 4x4 350v8.
    1986 250sx
    YES its fast NO you cant ride it.

  11. #11
    Join Date
    Jul 2005
    Location
    Kansas
    --
    62
    Zombie thread brought back... ��

    Okay, so after attempting this same swap I ran into this same issue. Has anyone ever tried cutting the shaft shorter and making their own splines or use a pin to hold the shifter in place on the shaft? I have yet to find a 83-84 shaft for sale (second gen parts seem pretty hard to come by), and I would prefer not to tear the bottom end apart and pull the clutches. I'm considering cutting the shaft but would appreciate some other thoughts before I do this.


    --------------------------
    1983 Honda 250R
    1985 Honda 350X
    --------------------------

  12. #12
    HondaRidr's Avatar
    HondaRidr is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Sep 2010
    Location
    Salt Lake
    --
    330
    There is an aircooled 250r page on Facebook that might be helpful in finding the shifter shaft.

  13. #13
    Join Date
    Jul 2005
    Location
    Kansas
    --
    62
    Sadly I don't have Facebook anymore. I decided because I don't have any use for the longer shaft since I don't have a first gen R I would try some redneck ingenuity. I hacked it off and put a pin in it... It seems to be holding fairly well! It also clears the second gen frame with ease now. I'll try and add some pictures of the hack job.


    --------------------------
    1983 Honda 250R
    1985 Honda 350X
    --------------------------

  14. #14
    Join Date
    Jul 2005
    Location
    Kansas
    --
    62
    Click image for larger version. 

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    --------------------------
    1983 Honda 250R
    1985 Honda 350X
    --------------------------

  15. #15
    Join Date
    Jan 2023
    Location
    Santa maria California
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    7

    I have a question

    Did you have to use a diffrent shifter because on my 82 engine the shifter is diffrent

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