Originally Posted by
jaka54
I have done so with the WIB bearings I use in my pylon racing engines and there is no difference! Why should it be...The crank should sit firmly in the bearing whether you use a C3, C4 or heaven forbid, a C2 bearing. Itīs the play between the balls and the inner and outer surfaces that dictates if it is a bearing with more play (C3 and C4) compared to a "standard" bearing.
Quite so, the C3 ratings etc are the internal clearance ratings, as installed.
As implied, two bearings with identical radial clearances un-installed, a bearing with a tighter shaft fit would have less internal radial clearance.
"WIB" (?)
Yessir, know them well. When setting up production test equipment in Canada 40 years ago they were my first choice and readily sourced from dealers in Ontario. "Suisse made, very high quality. Walzlager Industrial iirc