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Hunter743

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Everything posted by Hunter743

  1. Me and my dad went to inspect my brothers xr50 piston. We took the cam cover off and I took the bolt that holds the timing gear on off. We realized I lost my 10mm wrench so we put everything back together, changed the oil and when my brother went to ride there was no competition. The timing looks good we checked that, and the from the cover I can see both valves are moving? What could cause the low compression
  2. So we took the head off and put break fluid in the head with the valves closed, after about 15 minutes the exhaust port was damp and wet carbon cane out, 1 question how do I get the valve to seat all the way
  3. No but I can turn it over with just the weight of my hand
  4. We have a manual, and the timing looked to be pretty close and yes there was a mark on the flywheel and sprocket
  5. I’m thinking valves not seating, do we have to take the head off? And if it was rings wouldn’t it smoke? It ran great before we opened up the headAlso does the timing have to be like no tolerance precise or just look at it
  6. Hunter743

    dirt bike clutch sticking

    we have a bike where the bike stays in gear the entire time pulling in the clutch wont work. it worked fine with lucas oil tranny fluid but it was dragging a little bit, we went to change the oil and for some reason my brother put 10w30 in it. i never new and i went to adjust the clutch but now it wont work at all. could the oil do it
  7. Hunter743

    dirt bike clutch sticking

    reah we took the clutch pack off and wiped all off, we will pick up some real oil. I also heard you could use type f atf tranny fluid
  8. Hunter743

    dirt bike clutch sticking

    its a kx65 and we went all the way on adjustment and nothing. theres not much spring action in the clutch springs should i see the plate move in and out when taking the cover on and off. bolts ti tight?
  9. Hunter743

    2 stroke running hot

    it is kawasaki just the 06 model not 04
  10. Hunter743

    2 stroke running hot

    hello my little brother has a kx65 that we just rebuilt the top and bottom end. the people before us put a different stator (the bike is an 04 and has an 06 stator). It also has a full fmf system and it was never re jetted for the new pipe. i looked up fmfs recommendations and they recommend just one jet richer main and one jet richer pilot. but that little change shouldnt mess with the bikes temp right? i mean theres no coolent coming out of the overflow but it is still a little hot. Im planning on getting one of those laser thermomaters things and seeing the engines heat, what would be a good temp?
  11. Hunter743

    2 stroke running hot

    we did everything the manual said, 15:1 break in ratio and everything. i was thinking maybe the newer model stator is making the spark plug burn hotter? the 06 stator is different from the 04
  12. Hunter743

    Kx85

    The would also check the shocks, should oil often needs to be changed before the seal starts leaking
  13. Hunter743

    Kx85

    The would also check the shocks, should oil often needs to be changed before the seal starts leaking
  14. Hunter743

    Kx85

    The first thing I would do is put a new plug in and run it for 30 minutes hard, plug should be a light tan on the electrode. Also I would put a new one in pin it in 3rd gear then pull the clutch and kill the bike. Cut the threads off the plug a preform a plug check. Also the suspension like you said. Others than that let him rip!
  15. Hunter743

    Kx65 ignition problems

    So me and my dad have been building a kx65 for my brother. Retry much a 2018 on a ‘04 frame. So everything is done except rebuilding the shock and now it won’t sark. It did run but I screwed up the old stator trying to take the flywheel off. We got an aftermarket stator and put it on. The bikes sat since it ran and there is 3 or so spot rust areas and the outside of the flywheel isn’t magnetic enough to hold a bolt. I don’t know how much magnetism there is supposed to be. We took the boot of the spark plug and stripped it to bare wire and that won’t spark
  16. Hunter743

    Yz85 high rpm problem

    I have one but for stuff like jets and electrics it says take it to s yamaha dealer
  17. Hunter743

    Yz85 high rpm problem

    So my 2009 yz85 will chick if at about 9-10k rpm. I know it might not be good to run that high but at a face of a jump it’s sometimes necessary. I also have a pc platinum pipe.This is all we’ve done. Jets: 138 main(stock), 135 main(pc recommend),clip 3 (stock),clip2,clip4 Float: float was low 17.5mm (stock-18-20) Moved it up to 19 but no change. Spark plug: yamaha says to run a br10es but I run a br9es I think it may be the stator but Idk.
  18. Hunter743

    Yz85 high rpm problem

    How do you test the stator
  19. Hunter743

    Yz85 high rpm problem

    It runs great every where else but one at about 9-10k rpm it sound like it runs out of gas then cuts back on then of and so on and so forth
  20. Hunter743

    Yz85 high rpm problem

    I never really rode hard until I got the pipe. Like I wasn’t very good got the pipe then later progressed to be able to ride better. I will try putting the stock pipe on but I couldn’t really think how the pipe would be the case because changing jets should effect it
  21. Hunter743

    S0......Honda isn't the only one...

    Sounds like the ktm 300 and 250 xcw tpi vs carb. The tpi was smoother mid range but was jerky and not smooth down low, as the carb with good jets was smooth down low and all the way through top, injection hasn’t been around in dirt bikes that long but trust me give it time and it will replace carbs on all bikes. Just like cars fuel injection replaced carbed cars
  22. Hunter743

    S0......Honda isn't the only one...

    I think it’s from 2018 I looked at a few 2018 dyno results and they where all right about the same. I also saw a costume build Honda 250 vs stock 250s and it took the lead in mid and top but was last down low, 250s they rev real high anyways and if you are okay with shifting more and reving higher that might not be a bad way to go
  23. Hunter743

    Yz 85 jetting question

    So I have an after market pc platinum pipe. For a while ride with stock Jett’s but then I switched to the leaner pilot main and clip position. But I’ve tried every jet setting I could with stock and leaner Jett’s and the bike wants to choke off when WOT and when reving in neutral it doesn’t want to rev out and sounds like a 4 stroke rev limiter. There’s just no over rev I think it’s also worth mentioning that I’m running a ngk br9es when the book calls for br10es. The 10s foul with stock Jetts
  24. Hunter743

    S0......Honda isn't the only one...

    That was informational but I’ve always wondered why a unicam design. Why unicam over DOHC doesn’t the double can respond better at higher RPM. And if the 450s don’t have the power problem just because they are 450s wouldn’t that mean that the crf450s could have even more power than it does now, because it’s the same engine design?
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