Edit: oops. I got my threads mixed up. Oh well I'll leave it.

I had two sets and was able reuse my flywheel bolts on my manual. The FSM gives specs for neck diameter. I went through my two sets and found enough that were still within tolerance. Judging that the ones that came off we're all different, someone didn't do it right.

I went through an ungodly amount of research on torque settings. I didn't want to stretch a used bolt too much. Turns out about 85 ft/lbs is equivalent to the stretch specs. No pun intended.

I've read they can match balance the auto to the flywheel. I'm no expert.

I believe the 240's and 300's are balanced differently? But I'm still learning. Is this what contributed to the lack of problems on a 240 flywheel.

I suspect the difference in results and opinions is due to the abilities of the machine shop. What I don't understand is although they are match balanced on a slow moving machine, how do they know how far out the balance is in respect to the radii.

Not exact figures as I don't want to break out a calculator. But say 5 grams taken off 2" inches from center and 7 grams off 4" from center will show the same balance.

Maybe that's where it goes wrong with a "match" balanced 28 lb flywheel?