Sponsored Links (Register now to hide all advertisements)
When you say the "runout" of the flywheel was checked was it checked in both directions----runout of the face of the flywheel, and runout of the pilot bearing hole
When a flywheel is balanced off the crankshaft it is centered on the mandrel at the pilot bearing hole ----if tghe crankshaft wasn't properly centered in the crankshaft grinding machine there will be runout at the flywheel mounting
I had this problem with model A crankshafts ---3 different shops, .004 to .008 off center, was told by shops "it's just an old car, it won't matter"
I have bought several sets of Ford boxed rods,and pistons, all were balanced to +- 1 gram ,so Ford worried about balance on the production line and had tighter specs than most companys do