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  1. Replies
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    478

    1 and 3 look rich to me. Not sure what you guys...

    1 and 3 look rich to me. Not sure what you guys are seeing.
    They should be dark bronze, not black.
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    478

    To me that looks like bits of aluminum. If this...

    To me that looks like bits of aluminum. If this is a 1300 with power valves I'd pull that blade and see if it's getting chomped by the piston.
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    Saw your previous post about reusing the seals...

    Saw your previous post about reusing the seals and crank. If there is ANY doubt that a crank bearing is bad....have the crank repaired or replaced. And.....NEVER, EVER reuse crank seals on an...
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    Talk to Jeff at Competitive Crankshaft. He...

    Talk to Jeff at Competitive Crankshaft. He rebuilds cranks and is very competitively priced. I'm shipping a crank to them in the next few days for rephasing.
  5. Replies
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    It will cost you more in the long run to keep a...

    It will cost you more in the long run to keep a bad crank than to just have it fixed. If the lower bearing goes out, it breaks into a lot of pieces which end up in your combustion chamber. When that...
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    Remiving the flywheel is pretty straight forward,...

    Remiving the flywheel is pretty straight forward, even with the crank out. The coupler.....not quite as easy. The coupler should always be removed before the engine is torn apart. It is a standard...
  7. Replies
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    Pull the engine. To pressure test the...

    Pull the engine.

    To pressure test the crankcase, you have to build a fixture with a low pressure gauge some hoses and fittings. I use a needle valve on mine and I run my compressor, then turn it...
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    2,146

    Looked back and saw your spark plug thread, and...

    Looked back and saw your spark plug thread, and now the failure makes a little more sense. The #2 piston almost certainly failed due to water ingress. I've got a 1200r I'm working on now, and the...
  9. Replies
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    478

    1 and 3 look lean, almost excessively so, 2 looks...

    1 and 3 look lean, almost excessively so, 2 looks like it has a water ingestion problem, it looks steam cleaned.
  10. Replies
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    Those are definitely nikasil cylinders. Also...1...

    Those are definitely nikasil cylinders. Also...1 and 3 look very lean, I would check and clean the fuel injectors also. Cylinder 2 could also possibly be a lean failure, its hard to tell. Ive seen...
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    2,146

    I don't know what the conversion factor from US...

    I don't know what the conversion factor from US dollars to OZ dollars is, but $5K is awfully high. Many shops here won't even work on 2-strokes anymore, so you have to do your own.

    I say do it...
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    I can guarantee that there is trash in the...

    I can guarantee that there is trash in the bottom. At the very least, turn it upside down and flush it out very thoroughly with a pneumatic solvent sprayer.

    If it hasn't been apart in a while,...
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    water is most likely from leaking head gasket

    water is most likely from leaking head gasket
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    We also has the holeshot mod…. But still run the...

    We also has the holeshot mod…. But still run the sensor
  15. Replies
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    362

    We left the lower sensor intact on our 1200R for...

    We left the lower sensor intact on our 1200R for safety reasons.
  16. Thread: Impeller damage

    by K447
    Replies
    17
    Views
    1,217

    View Post

    When I have filed impellers back into ‘good enough’ condition I just use a regular mill bastard file


    https://www.lowes.com/pd/Kobalt-10-in-Mill-Bastard-File/4307525
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