Dick wrote:
yes there are timing marks. Unfortunately I can't access the case seam due
to nosebowl and air plenum sheetmetal that I'd prefer not removing.

So I guess my question still remains on difference between 30/32 and
28/30...

Thanks anyway, Dick

The correct answer as to why we like to maintain correct magneto timing in aviation is to prevent catastrophic engine failure such as
loss of cylinders, holes burned through pistons, thrown rods and other negative consequences of detonation. Is this answer clear
enough for you? Does it help that I'm an A&P? Why would you even bother to check the timing if you weren't going to do anything about
it except wring your hands and beg other people to tell you it's OK? Do you go through the same agony when your oil's low, or your
tire pressure's low? I can't believe that in the two days you've spent waffling over this, you couldn't find the time to loosen 4
nuts, rotate 2 mags, torque 4 nuts and make a logbook entry.

--
John Kimmel


I think it will be quiet around here now. So long.