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RD350 Supermoto project ideas needed

Discussion in 'Some Assembly Required' started by TNWillie, Jul 30, 2018.

  1. TNWillie

    TNWillie Been here awhile

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    Sep 18, 2012
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    353
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    NE TN
    I have a complete RD350 engine laying around and originally thought about putting it in a Ninja 250 frame. Then, the idea of putting it in a supermoto frame crossed my mind. So, I thought I'd start a thread here looking for some ideas on how I could do this as cost effectively (ie CHEAP) as possible. With that being the goal, does anyone have any ideas with regard to what frame/bike I should be looking for to put it in?
    #1
  2. Hvymax

    Hvymax Been here awhile

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    Sep 22, 2016
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    La Plata MD
    Pretty sure the 2 stroke will fit in most frames you would consider. All you have to do is figure out alignment and fab a few brackets and you should be GTG. Lots of little Ninjas out there and a 2 stroke 350 would really rock it.
    #2
  3. KustomizingKid

    KustomizingKid Been here awhile

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    Nov 21, 2012
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    Framecrafters builds some sweet Banshee Yz450 Supermoto's.
    #3
  4. fast1075

    fast1075 Fasterizer

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    Somewhere online I saw a 250 Ninja / RD350 engine swap thread. As far as SM frames, I'm lost.
    #4
  5. TNWillie

    TNWillie Been here awhile

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    Yeah, I thought an RD350 powered Ninja 250 would be a blast! I saw the video of the Banshee powered one. Pretty cool.
    #5
  6. dbarale

    dbarale Squiddly slow

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    I would start looking for a DRZ400SM with a blown motor. Plenty of aftermarket support, already tarded, cheap, and steel frame to make modifications easier.
    #6
    hondabtr, FR700, larryboy and 2 others like this.
  7. Pezz_gs

    Pezz_gs Cant ride for crap

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    Sydney Skunkworks
    Think the RD motor will fit in the LC4 frame

    Also the 380EXC frame...

    I have a rolling chassis but no engine

    It's on the to build list :hmmmmm
    #7
    Fast Idle likes this.
  8. Hvymax

    Hvymax Been here awhile

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    You have a brand new pair of roller skates. He has a brand new key!
    #8
    tonusmaximus and more koolaid like this.
  9. TNWillie

    TNWillie Been here awhile

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    Does the name Melanie ring a bell? lol
    #9
    Hvymax likes this.
  10. huub

    huub Been here awhile

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    i would say get a TDR 250 , and do the engine transplant , it has been done a lot of times,
    but i dont think the TDR was even imported in the states...
    so basically get a chassis from a off roader , and modify where needed.
    sounds like a brilliant project!
    #10
  11. Navin

    Navin Long timer

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    The roller of a Ninja 250/300 is literally the worst part of the bike. Find an older sport bike if anything streety is your planned use.
    #11
    GR0NK and Pezz_gs like this.
  12. TNWillie

    TNWillie Been here awhile

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    I would think that a Ninja 250 or 300 roller would be an excellent choice. Why do you think otherwise?
    #12
  13. Navin

    Navin Long timer

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    Because even under the 250 carbed motor it flexes, has shit suspension and low build quality. Ive had many and the 300 wasnt really any better.
    #13
    GR0NK likes this.
  14. Navin

    Navin Long timer

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    I forgot shit brakes too.
    #14
    GR0NK likes this.
  15. TNWillie

    TNWillie Been here awhile

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    Thanks for the heads up. Scratch the RD350-powered Ninjette idea.
    Next?
    #15
    Navin likes this.
  16. larryboy

    larryboy Chopper Rider

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    This is the answer.
    #16
  17. Salsa

    Salsa Long timer

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    Arizona, Alaska, Kalifornia
    Anybody have an RD350 chassis?

    Don
    #17
    Navin likes this.
  18. dwdantzler

    dwdantzler Been here awhile

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    Jan 8, 2015
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    I have an r5 chassis that I'm not currently using.
    #18
  19. Hvymax

    Hvymax Been here awhile

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    Pretty sure it's head and shoulders above the original. I grew up on multi cylinder 2 strokes with bias ply tires and drum brakes.
    #19
  20. Navin

    Navin Long timer

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    Yeah, I had thise too, you are overestimating the N250/300 platform. Its straight up junk. The engines deserved better. They flex at the swingarm and the forks are well, "the worst" pops into my head. Shocki is non rebuildable, high school shop class linkage pieces,,,, cheap. Its just frigging cheap. Take off the fairings and prepare to be disappointed.

    Id sooner find a real RZ frame and I aint singing their praise either. At least it would fit.
    #20
    GR0NK likes this.