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Project NSR250 MC21 Resto project

Discussion in 'Your 250cc Projects' started by Krompot, Sep 26, 2021.

  1. Krompot

    Krompot Well-Known Member Premium Member

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    After finishing up my MC22 project I figured I'd give the two strokers a go. Have been trying to get my hands on one and overheard a guy talking about his dad's NSR250 that's been sat outside for 20 years. Bingo!

    A couple of days later I've shown up at his place with the trailer.

    241359190_436662891094343_3353208133193799910_n.jpg

    It was sat in this exact spot since 2002 without a cover. The rego is still on hold.
    None of the wheels spun nor did the engine turn over.

    Had to drag it on the grass down to the roadside and from there had to pick it up for 2 metres at a time and shimmy our way to the trailer.
    20210917_162749.jpg

    This is what I saw when I started taking it apart...
    20210917_185551.jpg
     
  2. Krompot

    Krompot Well-Known Member Premium Member

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    I have my work cut out. Here's some more pics of the teardown.
    20210918_154134.jpg 20210918_161421.jpg 20210918_202545.jpg 20210918_203020.jpg 20210918_211451.jpg 20210918_211458.jpg
     
  3. Krompot

    Krompot Well-Known Member Premium Member

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    The engine only has 19k km on the clock. Fortunately the gearbox was full of oil, so it's still in good condition. The cylinders and pistons look good too.
    20210919_133208.jpg 20210919_134337.jpg
     
  4. Krompot

    Krompot Well-Known Member Premium Member

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    The crankcase and crankshaft on the other hand... definitely need replacing
    I think the crankshaft might be salvageable, but it will cost at least $500 to get it refurbished.

    20210919_141415.jpg 20210919_144251.jpg 20210919_145956.jpg 20210919_150003.jpg
     
  5. samthurtell83

    samthurtell83 Grumpy Dad

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    Oh mate, that's gonna need a huge clean up. Good luck with the rebuild. She needs some TLC, I hope you can get it back to its former glory.

    Sent from my SM-G988B using Tapatalk
     
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  6. Krompot

    Krompot Well-Known Member Premium Member

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    That's all there is for now. I have been able to find all the parts I need, but not the money to buy them ;)

    What I need:

    Tank
    Crankcase
    Crankshaft
    Brake rebuild kits for master and slave cylinders (or working used ones)
    Suspension bushes

    I will try to salvage what I can, but if anyone has any of these parts, or knows anyone that does, please let me know.

    Thanks for reading!
     
  7. ShaneP

    ShaneP Well-Known Member

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    Wow, I didn't believe the crankcase would get so bad! Try Facebook, there a group called "Australian Smokers" that might help, or look for a Kiwi equivalent. Good luck
     
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  8. jmw76

    jmw76 Well-Known Member

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    What a shame.
    That is going to be one hell of a project.
    Getting that one back to its former glory is going to require considerable effort.
     
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  9. Murdo

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

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    Bit of work ahead of you there. Most of the corrosion will clean up with a bead/wet blast and be quite useable. The crank may take a bit of work but anything you have can be rebuilt. Good luck, I look forward to watching your progress.
     
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  10. Krompot

    Krompot Well-Known Member Premium Member

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    Thanks, Murdo.

    The crankcase has severe pitting all over on the outside, up to 3mm deep in some areas. It would need building up with a welder and the crank saddles reground. I can buy a set of cases for $100. Much easier that way.
     
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  11. 2smokeRonin

    2smokeRonin Active Member

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    This is great! Will be well worth the effort in the end.
     
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  12. 2valve

    2valve Well-Known Member

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    Sad to see any bike in that state. As other have mentioned , will be interesting to watch the progress.
     
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