Please explain what you mean by bolt circle.
There is no snap ring in this differential. There is a place for one , but no way to get it in.
I can see what you are looking for though. The measurement I made was from the outermost part of the differential to the innermost part of the side gear. This will tell you how much of the axle is inside the differential. I'm also going to measure the axle spline length on my axle (when I can pull it) to compare against the measurement from the snap ring location to the end of the axle shaft location in the side gear. This way ARB can make their side gears with the correct spline length to fit our axles.
Logansportage <img src="/forums/images/graemlins/patriot.gif" alt="" />
Hi Logansportage,
The bolt circle would be the distance between the centers of two opposite holes that the bolts that hold the ring gear on go. Just like the holes in the wheel for the hub studs.
The snap ring goes into a groove near the end of the axle splines. Our rear diff doesn't need the groove in either the axle or the side gears but our front does need it. I am only guessing that the rear has the groove since it "might" also be used in another vehicle that needs it.
Come to think of it, the only difference between the older 26 spline rear diff and the front diff might be the lack of the groove.
It doesn't matter whether the rear has the groove or not but the front must have the groove on the short side of the diff housing to hold in the half shaft.
I have a brand new, un-bent clip for the front stub shaft to measure.
A rear 28 spline ARB wouldn't need a groove for the clip but a 26 spline ARB would need the groove if it was to be used in the front too.
