kx250 frame + lifan questions

Discussion in 'Some Assembly Required' started by Tr25w, Aug 9, 2012.

  1. Tr25w

    Tr25w Adventurer

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    My friend has a 92 kx250 roller(no motor). I see these lifan 200cc motors and thought it might be a good combo. What would be needed for the wiring since a kx250 doesnt have a battery?
    #1
  2. tntmo

    tntmo Been here awhile

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    You'd probably be best to just get an entire Chinese 200cc dirt bike and rob everything you need including a wiring harness. Everything I read about them says that the strong point is the engine, and the frame/suspension/wheels are junk.
    #2
  3. ben2go

    ben2go Moto Flunky

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    Pretty much what i have learned from people that I know that have them.
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  4. hugemoth

    hugemoth Long timer

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    You'll need the regulator/rectifier if you're going to run lights. It regulates the AC current as well as the DC. You'll also need the CDI unit and coil.

    The Lifan 200 engine comes in at least 3 types, push rod, push rod with balance shaft, and OHC. I have the push rod type with balance shaft in my Lifan motorcycle. The engine is excellent if not overly powerful, it now has over 37,000 miles on it with no problems.
    #4
  5. JagLite

    JagLite Long timer

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    +1
    I am watching for a complete bike to transfer everything over to the RM250 rolling chassis I have.
    It is much easier to start with a running bike than to figure out why it won't start when getting just an engine.
    Lifan and several others have excellent reviews of their engines.
    #5
  6. VxZeroKnots

    VxZeroKnots Long timer

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    I toyed with the idea of doing this to a 2000 RM 250 i have sitting around that I never ride. Keep us posted if you move forward.
    #6
  7. hugemoth

    hugemoth Long timer

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    Sellers of Lifan engines often supply everything you need as a kit. Engine, carb, manifold, CDI, rectifier/regulator, coil, kick start lever, shift lever, etc.. I've bought 3 engines this way and installed them in old Hondas. Makes it real easy. Wiring was straight forward and jetting in the supplied carbs was perfect.


    #7
  8. bobfab

    bobfab Long timer

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    x2, thats what i have seen too!
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  9. JagLite

    JagLite Long timer

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    That's good to know! Do you recommend any of the sellers? Link?

    I should have clarified that I am looking for a complete bike that is street legal to transfer everything over to make my RM a street legal trail bike.
    Our laws here in Alaska don't allow a bike to be made legal unless it came that way from the mfg and says so on the title.
    I will just get the title changed when I install my "custom" frame and get a state supplied VIN #.
    I hope to find a 200cc street bike donor eventually.

    If you only want a dirt bike engine, the electrical on it is simple! :evil
    #9
  10. hugemoth

    hugemoth Long timer

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    Sorry about the delayed response, I've been doing some Lifan riding in the wilds of BC Canada.

    I've bought new engine kits from hooperimports.com and dratv.com but I'm sure there are many other legit sellers.


    #10
  11. ibhayirob

    ibhayirob n00b

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    hi there q

    are you putting honda clone lifans in your bikes or is frame modification required

    tks

    rob






    #11
  12. hugemoth

    hugemoth Long timer

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    All the Lifan engines I've used are Honda clones. Minor grinding and drilling on the frame is required. These are the bikes I've done.

    Lifan 110 into 1971 CT90.
    Lifan 140 into 1968 CT90
    Lifan 110 into 1965 Honda Cub

    I also own a Lifan 200 GY5 motorcycle with the OHV vertical engine.

    #12
  13. Salsa

    Salsa Been here awhile

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    Is the OHC better?

    Which of the three is preferred?

    Don
    #13
  14. hugemoth

    hugemoth Long timer

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    All the horizontal engines are OHC. The majority of vertical engines sold are OHV which they say have a better power curve for dirt bike and dual sport use. There were some OHC vertical engines used in street bikes imported to the US.

    The OHV vertical engines are clones of the Honda CG125 which is one of the most bullet proof engines ever made. The OHC vertical engines will eventually wear out the cam chain but otherwise are very similar in design.

    BTW Lifan makes many different engines including parallel twins, V twins, shaft drive engines, liquid cooled engines, forced air cooled scooter engines, generator engines, industrial engines, car and truck engines, etc..

    #14