Originally Posted by
oddski
Except balls(1/8 - 3/32), I think I read somewhere that you had to use a nonflanged bearing in the spur.
yes, when using a spur gear with 3/32 diff balls, a non-flanged bearing is typically needed in the spur gear. Also, it is sometimes necessary to add an axle shim or two between the outermost diff bearing and the diff cone. Those shims are sometimes needed so that the diff nut doesn't bottom out on the end of the graphite axle shaft before applying pressure first on the inner race of the outermost bearing.