Originally Posted by EAMotorsports
Last notch of timing and probably a 46 pinion to start with depending on track size.
Thanks, that's about where I was thinking.
Originally Posted by locked
You should include track size. Brand of car would also help if you are looking for someone to tell you which pinion to use with your 96 spur, instead of just the FDR. They have different internal ratios.
4.0 FDR is a reasonable starting point for a medium sized track. Lower for larger tracks.
Can timing...Crank it up, but check temps often, use a fan and make sure your drivetrain is as free as it can be.
the car is a TC6, track is about 100 x 40, so medium size and it's medium traction. I have a fan as well, and I just purchased some ceramic bearings so they will be going in as soon as I get them. I'm running a front ball diff (set tight) and a rear ball diff set loose. Tried a spool, but really didn't like the corner entry with it so went back to the ball diff.