crank bearings

[jords]

question


can I use sealed bearings on my crank instead of open ones? PTO and Mag.

 

[pincusa]

I guess you could. I don't see why you'd want to. The case of the engine is filled with oil and the bearings will get lubrication from that oil

 

[jords]

the reason I ask is because I have seen alot of sled guys going that route. I know seadoo clinic started using them calling them fatty bearings. I guess people are saying they are getting long run times with the sealed bearings. They are not cheaper in price or anything, seems like less prone to bearing failure from oil or air leaks.

 

[Chester]

I guess you could. I don't see why you'd want to. The case of the engine is filled with oil and the bearings will get lubrication from that oil

It's a 2-stroke and the crankcase has no oil in it. The bearings get their lubrication from the oil that gets injected into the fuel/air mixture at the intake manifold. It swirls around the crankshaft before going into the cylinder.

Chester

 

[Chester]

the reason I ask is because I have seen alot of sled guys going that route. I know seadoo clinic started using them calling them fatty bearings. I guess people are saying they are getting long run times with the sealed bearings. They are not cheaper in price or anything, seems like less prone to bearing failure from oil or air leaks.

I don't really think it's necessary for PWC engines. Also, an air leak will cause a piston seizure long before any bearing damage.

Chester

 

[jords]

yea thats true too, just curious.........thanks man. I would love to put ceramic bearings in it, but at 100 bucks a pop oh man would be like a 1000 crank when its done. I guess my motor did last 14 years, I will stick with the same bearings.