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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
stainless or ti
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[QUOTE="Rich Rohrich, post: 1103798, member: 16241"] CRF250s tend to wear out exhaust valve guides fairly quickly but rarely have much wear on the intake guides if the oil is changed regularly. Most CRF250s that are run on pump gas will erode the face of the exhaust valves due to the deposits that are left behind and they need to be replaced once this happens. Engines run on good unleaded race fuel tend not to have this problem. Titanium valves work well if you are willing to change valve springs a couple of times a year. If you don't want to go through that hassle then Kibblewhite stainless steel valves with their spring kit is the best solution. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
stainless or ti
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