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LT250R exhaust valve, need help

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Old May 15, 2003 | 10:03 PM
  #11  
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Default LT250R exhaust valve, need help

got it workin great, thanks for all the help. I losend the spring on the adjustmet and it seems to spring open now, so much better
 
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Old Jun 4, 2003 | 11:11 AM
  #12  
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Default LT250R exhaust valve, need help

Does the power valve close on top end? With the cyl off, the rod on my 88 is up (the valve would be closed) when I install the cyl. I dropped one of the plastic bushing/retainers in the crank. Will it hurt my bottom end?
Thanks
 
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Old Jun 4, 2003 | 12:22 PM
  #13  
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Default LT250R exhaust valve, need help

F250r, are you saying that you loosened the spring beyond the service manual recommendation? If so, you are probably hurting your lower midrange with no improvement of topend. The exhaust valve is meant to actuate at a certain rpm to get the best low, mid, and top end power. If you have no way of checking rpm (tachometer) then you should just adjust the valve according to the book and leave it alone (unless the valve doesn't work at all, then you need to service it). Following the service manual's instructions on adjusting the valve is FAR better than GUESSING what rpm you engine is spinning when the valve actuates.
 
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Old Jun 4, 2003 | 04:16 PM
  #14  
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Default LT250R exhaust valve, need help

i have to hit gas onece it is warmed up and then it closes and stays closed at top end. it seems to be working correctly now
 
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Old Jun 4, 2003 | 04:18 PM
  #15  
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Default LT250R exhaust valve, need help

i would take it out, it will get stuck in the clutch plates, or gears and thats not very good, those parts are wicked expensive too.
 
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Old Jun 5, 2003 | 01:20 PM
  #16  
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Default LT250R exhaust valve, need help

The lower bushing/rod retainer on my 88 hangs up on a part of the mechanism of the governor. Its like the bushing is too long. I replaced mine with a steel retainer use on a car door lock linkage. Theres a lot more cleareance.
 
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