Maintenance & Technical > KX500 Original
Crank-seals
kwakman:
oiling your mains up and not starting it is what I've heard to be best, as if you keep starting it you will get a moisture build up otherwise. (Quote Stan Stephens)
81cr450:
--- Quote from: Polar-Bus on February 28, 2012, 05:49:55 AM ---The crank seals are not to worry about, it's the actual crank bearing balls that can develop tiny rust pits over extended periods of storage. When I am thinking I won't be using my 2 stroke for severall months, I shoot a liberal amount of 2 stroke storage fogging oil into the carb while the engine is running. This ensures a thick coating of oil to prohibit internal rust corrosion.
--- End quote ---
I think I just found this ^ the hardway . Bought a bike thats sat for at least 2 1/2 years. Started once in that time ran 2 blocks & then was parked again. I just bought it starts great, runs nice, but gets a little buzz if you wind it out for very far. Thought it was the chain at first but... still doing it. Makes sense anyway
Polar-Bus:
Seized cranks from rust are less common in dirt bikes, the far more common rust crank seizures come from snowmobiles and Jet Skis, as they sit for very long intervals of off season storage.
jonny500:
--- Quote from: kwakman on February 28, 2012, 09:32:32 AM ---oiling your mains up and not starting it is what I've heard to be best, as if you keep starting it you will get a moisture build up otherwise. (Quote Stan Stephens)
--- End quote ---
how do you oil your mains with out a tear down. if starting it regularly gives a build up of moisture then a bike that is used regularly would get a build up of moisture and would be worst off than one thats left standing. i no understand :? :? :?
81cr450:
A car when driven short distances will create moisture in the process of heating up & cooling down. You will see your oil get milky under your oil cap your dip stick will rust up a bit if it continually just sees these short trips. Convection is the scientific term I believe. Where if you run it long enough to really get it up to operating temp you'll burn off that moisture & never see it. Same principle with a bike I would assume. Just sitting in a sunny spot out side would cause similar results in a climate that has large temperature fluctuations. Thats why you store your motor parts inside where the temps dont fluctuate it's not enough just to throw a tarp over them. If you've ever torn down a motor you know you kept covered only to find it all rusty you likely got had by this principle. It was a 400 sbc for me.
On the oiling the bearings: they make a fogger oil that you spray down the filter hole while the bike is running to coat everything thoroughly
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