05-02-2019, 09:02 PM
Hi Colin
I think 15 thou is at the upper end of OK. Others will probably correct me. Be careful, trying to correct run out by enthusiastic lapping of the taper will bring the flywheel too close to the engine and cause all manner of problems. I had this problem with my special. In the end I left the runout at about 15 thou (even though the taper was not perfect) and used Loctite 660 on the taper.
Howard
I think 15 thou is at the upper end of OK. Others will probably correct me. Be careful, trying to correct run out by enthusiastic lapping of the taper will bring the flywheel too close to the engine and cause all manner of problems. I had this problem with my special. In the end I left the runout at about 15 thou (even though the taper was not perfect) and used Loctite 660 on the taper.
Howard