But I’m in a bit of
a quandary. I set TDC on the flywheel as Lynn described and it looked
so perfect. But the timing light is showing it firing at 40+Deg. ATDC and when
I turn the Crank Angle sensor as far as it will go trying to advance it I can
only get up to about 20Deg ATDC. The engine, however, sounds MUCH, MUCH better
as I advance the timing – although that may also be because I pickup
about 100RPM when I do that.
Oh, and the little red
and yellow dots on the main pulley seem to be correlating with the flywheel
marks at this point.
I guess I’ll have
to see if I can re-position my Crank Angle sensor this weekend and see what
happens when I can advance it further.
If you’re confident that the TDC
mark is correct; then, yeah; 40 ATDC is “WAY” retarded. I don’t
recall how many cogs are on the CAS drive, but it seems you will have advance
it just a bit more than 1/16th of a turn. That’s at
least one, and maybe to cogs.
It’s amazing how far the timing
can be off on these engines and still have them run. At first I thought
my engine was running quite well. Then I ran first on leading ignition
only, then on trailing. It was about the same either way; whereas it
should run quite noticeably better on leading only. Giant clue that the
timing was very late. Do you have any way to switch off leading and
trailing ignition?
Al