Rear Diff Noise After Weir Kit Install - Spider Gear Assembly Installed Upside Down

Transmissionadvanced✓ OP Confirmed

Problem

Rear differential making excessive noise after installing a Weir LSD spring kit

Loud groaning/noise from rear differentialNoise present after Weir kit LSD upgrade installationNoise worse than typical LSD chatter on turns

Root Cause

The spider gear assembly was accidentally installed upside down during the Weir kit installation. Repeated shim adjustments caused the assembly to get flipped without the installer noticing.

Confidence

Moderate confidence — Original poster confirmed this resolved the issue

View Original Thread →Posted November 2019 on SupraForums.com