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Info Honda MC31 CB250F Hornet

Discussion in 'Honda 250cc In-line 4's' started by kiffsta, Oct 21, 2016.

  1. kiffsta

    kiffsta Senior Member

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    Well, I spotted a CB250F MC31 on a Facebook group for cheap, the engine had done a rod and was out of the bike. Knowing I have a spare MC22 engine tucked away in the corner, I thought beauty, I will grab it and see if I can get it on the road.

    The seller was awesome, she gave me a great price via Facebook messenger and we arranged to meet tonight so I could collect it. The bike is what it is, no pics tonight but will get some tomorrow once I unload it all.

    Should be fun fixer upper....er

    This is what they look like from the factory

    mc41.jpg
     
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  2. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Thought u may have jumped on that one when I saw it .... :thumb_ups:
     
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  3. kiffsta

    kiffsta Senior Member

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    Some pics from the ad

    IMG_0550.JPG IMG_0551.JPG IMG_0552.JPG IMG_0553.JPG IMG_0555.JPG
     
  4. risky

    risky risky

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    if you are scrapping it out i will take the electics.
     
  5. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Nice score. Little brother to the 400 Super Four. I didn't know they existed.
     
  6. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    Like the big 'cruiser' bars. :lolsign: Is a GS500 tail light the same?
    Did you get the billy cart too?
     
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  7. kiffsta

    kiffsta Senior Member

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    well guess what, the motor wont fit

    MC22 engine has bolt holes on the inlet side to brace to the frame, MC31 has bolts holes on the exhaust side.

    #fuckityfuckfuck


    IMG_8842.JPG IMG_8843.JPG
     
  8. risky

    risky risky

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    if you cannot get around the problem my offer stands.
     
  9. kiffsta

    kiffsta Senior Member

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    what do you need ?
     
  10. risky

    risky risky

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    will give you a ring.
     
  11. risky

    risky risky

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    deal done and dusted.
     
  12. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    You can't swap the left and right mount's around ?
    What about some sort of extension, bolt it up to the frame mount's and extend it back ?
     
  13. kiffsta

    kiffsta Senior Member

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    its cast into the engine case, alas its a lost cause without some serious engineering, I didn't pay a lot for it, time for it to be broken up for parts.
     
  14. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    Sound's like the easy way out,lol.
    It's cast into the cylinder isnt it?
    Can you swap cylinder's/head's or not worth the time and effort involved?
     
  15. kiffsta

    kiffsta Senior Member

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    on the MC14e engine, the cylinder is part of the top case, as its done a rod, I suspect there will be some internal damage
     
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  16. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

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    I've got a spare MC19 engine.
     

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