clhiller
Silver Level Sponsor
During my refresh this winter, I was able to replace the existing 4:55 Rapier rearend with a 4:22. All the bearings seemed in good shape, I was concerned about the amount of backlash. A mechanic buddy checked it out with the Mark I eyeball and pronounced it "good enough". Now when I drive, in 3rd, 4th and OD, there is a loudish whine from the rear area of the car. It stops when I let off the gas and coast, and is quieter when I am hard on the gas. It is loudest when just cruising.
Is that indeed the sound of a sloppy differential? I am prepared to live with it until the winter when I can remove and dial it in correctly. Or could it be the wheel bearings, or the transmission? I did not replace the wheel bearings when I had it apart (dumb), but I did use the two that were smoothest and quietest and were acceptable in my opinion.
I did have the transmission rebuilt by a reputable British car shop and it was run on their test bench with no issues. There is no vibration coming through the gear shift and no vibration in general when cruising at 65 mph. Just the whine (and not the good kind!).
What is everyones' opinion?
Is that indeed the sound of a sloppy differential? I am prepared to live with it until the winter when I can remove and dial it in correctly. Or could it be the wheel bearings, or the transmission? I did not replace the wheel bearings when I had it apart (dumb), but I did use the two that were smoothest and quietest and were acceptable in my opinion.
I did have the transmission rebuilt by a reputable British car shop and it was run on their test bench with no issues. There is no vibration coming through the gear shift and no vibration in general when cruising at 65 mph. Just the whine (and not the good kind!).
What is everyones' opinion?