> Since you have some shafts, perhaps I could impose upon you to take some measurements. There would be no useful numbers on the joint itself. If I had measurements of the u-joint, I could ID them from that. These are best done with a set of vernier calipers, but if you have a finely graduated ruler, it could probably get me close enough to determine which u-joint. Here are the measurements I need.
1) Measure the u-joint cap diameter as closely as you can.
2) Measure the distance from cap to cap (directly across) as closely as you can.
3)If you happen to have a u-joint apart, measure the diameter of the u-joint trunnion.
Also, if you have time and the vernier calipers, could you measure a couple of other things on the axle shafts?
1) Does the inner shaft taper down to the 30-spline section, or is it fairly uniform in size. If it tapers, please measure the thicker part of the shaft (below that really thick part right below the yoke).
(my reply)
The inner shaft is 1.31 inch...that was verified by several members in the past. It is 30 spline. There is no taper other than the fairly quick reduction from the yoke.
(end reply)
2) Measure the outer axle diameter inside (at the bottom of) the splines.
This is the minor spline diameter and this will help me verify the number I have for 21 spline shafts (assuming it's 21 spline, that is.
(my reply)
Outer end number of splines=21
Diameter of outer shaft at outside of splines=1 23/64....1.359375 This
is the diameter of the splines themselves...they are wider than the shaft they are on.
Diameter of outer shaft away from splines 1 1/4 inch exactly...1.25. This is the diameter of the shaft between the joint yoke and the splines, no taper.
On the joint question...here are the measures I have:
Snap Ring Dimension aka outside of snap ring groove to outside of opposite snap ring groove: 3 inches even
Diameter of cap inside of snap ring 1 3/8...1.375 Outside of the yoke the cap has a tapered edge that seems to measure 1/32 of an inch smaller then the 1 3/8...dont know if that means something.
cap to cap, outside: 4 11/64...4.171875
Ujoint body, the large rough center part:: 2 inch even
Machined surface between bearing cap and rough finish center body: half way between 9/64 and 10/64 by eye....19/128ths best guess...0.1484375
Cap Length, end to end: 15/16ths inch
2 inch body + 2- 9.5/64th (19/64) sections between body and caps + 2-15/16ths (120/64) caps = 4 11/64
(end reply)