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I finally took a close look at the differential, and the picture below shows what I found. Looks like there's a new ring and pinion in my future.
I had planned to rebuild the diff anyway, since it only had a dribble of oil in it when I opened it, and I don't trust that the bearings are OK. They feel smooth, but the backlash is a bit out of spec, and I need to pull it apart to inspect them, anyway.
New ring and pinion sets are available, but cost a bit under $500. I would like to get a good used set, and it seems the easiest way to do that is just to find a used differential. Maybe a 4A IRS one (my car is a 4A solid axle) as I understand the internals are the same, and it's easy to ship. So, two questions;
1. Am I right in thinking the IRS and solid-axle internals are the same?
2. What's a going price for a used TR4A IRS differential?
Thanks for your help!
I had planned to rebuild the diff anyway, since it only had a dribble of oil in it when I opened it, and I don't trust that the bearings are OK. They feel smooth, but the backlash is a bit out of spec, and I need to pull it apart to inspect them, anyway.
New ring and pinion sets are available, but cost a bit under $500. I would like to get a good used set, and it seems the easiest way to do that is just to find a used differential. Maybe a 4A IRS one (my car is a 4A solid axle) as I understand the internals are the same, and it's easy to ship. So, two questions;
1. Am I right in thinking the IRS and solid-axle internals are the same?
2. What's a going price for a used TR4A IRS differential?
Thanks for your help!