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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
KX/KDX Hybrid Test Ride
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[QUOTE="placelast, post: 512806, member: 22683"] OK guys: I took the pipe off & PV cover to exercise the PVs - everything seems to be working/rotating properly. The two drums on the left & right rotate, and the upper one does also. What is that cast piece which fills in the gap between the upper PV and the cylinder? It appears to just sit there, doing nothing. Is it a spacer? Is it suppose to do something or no? BTW, this is a '90 engine. If all this is normal as it appears then what my friend has here is in fact a bike that will smoke an XR250, and then some; more $ (RB carb mod, Delta Force reed cage, FRP or EG porting) would certainly help and be his options. I never intended to mean it does not have a higher-RPM hit; it does, but it's simply not as pronounced nor as sufficient as I thought it would be (for my preference); and it's better than what an XR brings to the table. I'd like to keep it. Maybe new reeds would be of benefit and make it even livelier at higher RPMs and in the middle. It acts as if there's a bit much flywheel weight, and that's not a bad thing for woods riding. My RMXes have heavy OEM cranks, yet I added even more with Steahly's because they are all too willing to spin the rear tire when negotiating rock gardens, and when brake sliding they lock up too easily (I came off of a few years with a 4-stroke). Oh: I ride mostly in the desert, but for those two things I found it worthwhile to give up some of the quick rev. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
KX/KDX Hybrid Test Ride
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