We replaced the stock 21 lb flywheel with ACT’s XACT Prolite flywheel. It weighs 9.7 lbs. The flywheel is CNC machined from a 4130 chromoly billet and heat treated for maximum strength. The starter ring gear is induction hardened.
Since the flywheel bolts are going to be stressed by clutch kicks, we replaced the stock Nissan bolts with high strength ARP bolts.
We lubed under the bolt heads for a more accurate torque reading using anti-seize but you can use the lube that ARP supplies.
For the threads, we applied Loctite Red sparingly. You want to be careful and not put too much on here.
We bolted up the flywheel in a cross pattern then torqued them down to the proper tightness in steps.
We replaced the old pilot bearing with the new one that came with the clutch.