Pinion angle?
Thread Starter
On The Tree
Joined: Nov 2003
Posts: 143
Likes: 0
Pinion angle? What pinion angle should I go with on a street driven M6. I don't run at the track so I really don't want it too extreme. I was thinking about -1. Does that sound right with my setup. I also have the LCA relocation brackets, Spohn TQ arm, BMR springs (1" lowered), and Bilstein shocks on the way and will be installing all at once. 
The pinion angle wants to match the transmission tail angle.
On a torque arm (and any non-parallelogram link setup) the
pinion angle changes with ride height / compression /rebound.
You would like zero angle difference at normal cruise. Need
to measure the trans angle with the vehicle on the wheels,
and then adjust pinion angle to {whatever that is}.
Most angle gauges are gravity gauges so vehicle rake, springs
etc. will affect absolute angles. Go by relative angle difference.
On a torque arm (and any non-parallelogram link setup) the
pinion angle changes with ride height / compression /rebound.
You would like zero angle difference at normal cruise. Need
to measure the trans angle with the vehicle on the wheels,
and then adjust pinion angle to {whatever that is}.
Most angle gauges are gravity gauges so vehicle rake, springs
etc. will affect absolute angles. Go by relative angle difference.
