I had already posted some about this modification in another thread but then decided to better start a new one...
Above are some of the posts about this same subject, moved over from that other thread.
Fact is, the old design, 7/8 inch-long, RH-threaded/grooved section inside our front bearing retainer really does its job, keeping the oil inside the cavity - provided there is no wear at all, and everything stayed free of sludge, grease, etc.
But... there must be a reason for modern, manual transmissions to have an oil seal there, instead...?
So the idea behind this was, why not try upgrading our old Spicer's to run an oil seal, thus eliminating one more (possible)problem area?
Well, it is doable, but a new retainer has to be made. The stock one simply has not enough material there, for such a modification.
Pics, below...
Drawing and more details available.
This is still in its experimental phase and so far only a pair of prototypes were done here, with only one of them "highway-tested" and OK.
Hopefully someone in this group, with a machine shop- and located in the USA, could make a short batch and then find some "guinea pigs" to run these for a while and have some feedback?
G.