I have a weird one here, wondering if anyone has any experience.
I have a set of Richmond gears I am trying to set up for my Mustang, they are lightened and REM polished and don't have a pinion depth on the end. However, the instructions said to start with a .020 pinion shim if you didn't have a number or the ability to check
I am using a Mark Williams Daytona bearing retainer and a Moser N-case along with a Truetrac 31 spline diff.
The REM polishing makes it very tough to see the pattern, nothing wants to stick to it enough to show how it meshes, so I initially used the recommended .020 shim, set backlash and tried it. Its was ridiculously noisy at steady cruise, a loud whine/ringing.
So, most of my 9 inch setups end up with a pinion depth around 1.030 - 1.031, so I checked this one and it was extremely deep at 1.010. However, I have never seen a 9 inch take .045-.050 of shim pinion and Richmond's advice seems to support that
My thought is that maybe the combination of parts makes the Richmond recommendation no good? Additionally I am wondering if the REM polishing could be causing the gear to shed oil making noise.
What do you guys think? Have you ever set up a 9 inch that needed that much pinion shim? Do you think starting at 1.031 is a smart estimate? I am halfway considering ordering a set of motives and be done with it, but these are very expensive and very nice (looking anyway LOL)