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  1. Raptor 660 Modifications
    Gonna upgrade to Weisco, KW, or Ferrea valves. Not sure which yet but my question is with stock sized valves either brand, do they all use the same size guides? Is the OD on all the stems the same? I know im going to need to shorten the intake one. Well i found an intake guide already shortened...
  2. Raptor 350 Discussion
    I have adjusted the valves 4 times cleaned the carburetor 3 times I’ve set the valves to the tighter side and looser side but I have a loud valve noise and it backfires through intake side. At higher rpms it doesn’t backfire but still really loud valve noise I’m ready to drive it off a cliff...
  3. Raptor 350 Discussion
    So my 350 started blowing back through the carb one morning so I pulled the head and seen that the intake valve isn’t closing all the way. It isn’t bent or stuck in place. When you turn the cam over the rocker opens the valve like it’s supposed to, then when it’s closing it just barely gets...
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