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      this old xs replied to the thread Misfire under load.
      Thanks Jan_P, don't want to throw the baby out with the bathwater! 😉 These cases are pretty simple, on the to do list is a thorough wash...
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      this old xs replied to the thread Misfire under load.
      Didn't check the oil pump yet, but I've got a Friday flexi so time to suck it up and get that crank out. Anyone who had failed main...
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      this old xs replied to the thread Misfire under load.
      Hmm, I didn't notice, thanks for pointing that out. I'll investigate tomorrow though!
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      this old xs replied to the thread Misfire under load.
      I'm yet to summon the enthusiasm to disassemble the top end again so I can remove the crank. I did decide to have a tinker with the oil...
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      this old xs replied to the thread Misfire under load.
      They're definitely not at the bottom of the depreciation curve, on the way back up it seems. I paid too much for mine but I don't care...
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      this old xs replied to the thread Misfire under load.
      Well I looked and looked, but I couldn't get hold of a M24x1 nut locally. Could order, but ain't nobody got time for that. I didn't have...
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      this old xs replied to the thread Misfire under load.
      Bottom of the lower case has lots of shrapnel. Will be getting a thorough clean, ditto all the screens. Glad I didn't take it for a spin...
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      this old xs replied to the thread Misfire under load.
      Right hand big end failed.
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      this old xs replied to the thread Misfire under load.
      Just I wondered about that big end failing too, seems strange to me, especially for a roller bearing. Mike's xs has the inner and outer...
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      this old xs replied to the thread Misfire under load.
      Not sure if I should start another thread for this? Does this oil pump look serviceable? Seems not too bad to me. One score is pretty...
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      this old xs replied to the thread Misfire under load.
      Yes, seems ok to me considering I wouldn't really save much by trying to do it myself. Here's what Geoff said to me: New Bearings X 4...
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      this old xs replied to the thread Misfire under load.
      I was seriously contemplating having a go at a crank rebuild, but Geoff Bamford from geoffsxs will do me an exchange fully rebuilt crank...
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      this old xs replied to the thread Misfire under load.
      Hmm. Just watched a video of a fella rebuilding his XS650 crank in his shed with a dodgy ebay hydraulic press. I own a dodgy ebay...
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      this old xs replied to the thread Misfire under load.
      Northern NSW, New England region.
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      this old xs replied to the thread Misfire under load.
      Welcome back to my bench, its ground hog day again here in the shed. Deja vu all over again. Long story short, it wasn't like any rod...
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      this old xs replied to the thread Misfire under load.
      Silver lining? Seems I can split the cases without taking the top end to pieces again...
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      this old xs replied to the thread Misfire under load.
      Yeah, and this oil has about 50 miles on it IIRC. Thinking on it more, I'm inclined to think it's a broken or chipped gear tooth...
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      this old xs replied to the thread Misfire under load.
      Oof. 12 or so hours and she's back together and running (didn't put the side covers on). Sounds like a bag of hammers still 😭 Sub...
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      this old xs replied to the thread Misfire under load.
      Yeah, that picture was before lapping 😁 I maybe should have done more (nice and shiny) but it is what it is. Progress! Amazing what you...
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      this old xs replied to the thread Misfire under load.
      Nice suggestion, thanks. Yep, all new valve stem seals.
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      this old xs replied to the thread Misfire under load.
      Been busy/procrastinating, progress is slow (having another bike to ride definitely contributes). Cylinders are back on, did the clutch...
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      this old xs replied to the thread Misfire under load.
      I mainly chuckled at the bun fight in that honing thread. It's amazing what can turn into a contentious issue, and how bent out of shape...
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      this old xs replied to the thread Misfire under load.
      Thinking on this some more, and considering the pistons have no, like zero, signs of blow by, I ain't messing with it. Might rub down...
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      this old xs replied to the thread Misfire under load.
      Well boys, everything measured out mint. Both pistons are scuffed but pretty well bang on spec. Bores are plus or minus a tenth of a mm...
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      this old xs replied to the thread Misfire under load.
      I've been looking at these piston crowns through the spark plug holes since I got the bike. I wasn't liking what I was seeing so it's...
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      this old xs replied to the thread Misfire under load.
      Dang it, already ordered them. Ah well, worse things happen.
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      this old xs replied to the thread Misfire under load.
      And I couldn't resist. Head will come off, valves getting lapped and new stem seals. Hopefully there's no unpleasantness lurking in...
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