My lump is current on a stand for bottom end work, and will be getting a new clutch also. The flywheel is original. I got concerned when I saw the ring gear as the teeth all have a very pronounced chamfer. No teeth are broken but some of the chamfers have gnashing marks from the starter gear which could probably be cleaned up.
After reading a few posts from the archive it appears that the 3.8 ring gears do have chamfered teeth, and did from new so maybe it is fine from that perspective. What does concern me is that it’s been cut before multiple times, and will need to be cut again.
I’m not noticing any specification in the manual for minimum thickness nor am I sure where to measure it? I once saw a nice looking used one on Ebay and it appeared from the photos that it might have originally had a raised area where the clutch disk engages. Is that correct? Mine has none. It had none when I got it 20 years ago. If it had one originally it had already been shaved off and now it needs to be shaved again. How badly might this alter the throwout characteristics?
I noticed that SNG is offering a new steel flywheel but I don’t think it has chamfered teeth, in fact none of the replacement flywheels have them. How would this affect the operation of a 3.8 starter gear? I am somewhat averse to trying an aluminum one with a 3.8L at 1/3 of the weight. I find it twitchy enough and challenging enough to rev match a Moss box with the steel one.