Some dumb *** that thinks he knows everything was telling me that you have to replace bearings everytime you rebuild... even though atkins, rebuild video, and other people told me that its pretty rare that you have to replace the bearings. I know for sure Kevin doesnt replace bearings when he does his rebuilds either. Dont you hate it when you talk to some dumb *** thinking he knows everything trying to telling you a bunch of BS based off stupid stuff?

 

I figure if the engine has more than 80K miles (or is a Jspec with the so called 30K miles)on it, that the bearings need to be changed on a rebuild.

 

Its all personal preference. Some people thing you have to change the air in the tires when ever you get a #4 from burger king

 

LMFAO!!!

THat's real true, lmfao. that's the greatest.

BTW< in my experience, even bearings with 140k on them show very little wear, 15% or less. The general consensus among most engine builders is that a bearing showing less than 40% wear (discoloration) is reuseable. Rotaries are VERY well oiled from the factory, and rotary bearings dont endure a large amount of stress, in comparison with piston engine bearings. The only real reason to replace bearings is a) perfectionism, b) mileage over 150-175k, c) more money than sense, d) history of oil starvation or severe overheating, e) spun bearing (damned hard to do).

 

Interesting thoughts. I would think that actually mic'ing the bearings would really tell the wear. I had one bearing that was showing the copper on one portion so I replaced them all. Considering that a whole new set of bearings costs about $60 seems, imho, they're worth the money. And yes Hypntyz, I am an ****-retentive perfectionist

 

you also might damage the new one when trying to press them in.....I haven't ever seen a bad set of rotor bearings.....

 

Well you do have to check the clearance between the bearing diameter and eshaft. It could be out of tolerance. I would not assume it is fine just because it looks ok.