diamond on the flywheel ?

[gforbess at attglobal.net (Gordon Forbess)]

On Fri, 09 Sep 2005 17:47:36 -0400, wolfsbrg8v@bellsouth.net wrote:

>The timing marks on my flywheel don't correspond to any manual illustration I've seen.  There is a large diamond-shaped notch, and about an inch to the right I *think* there is a small "o", it's hard to see.  I'm guessing the diamond should be 6? BTDC, and the "o" is TDC.  Anybody else have these marks or seen similar?

That's exactly how my original flywheel was marked.  The 0 is TDC, the
notch was at where the stock timing was supposed to be for that motor.
If the notch is to the right of the 0, it's after TDC.  To the left is
before TDC (as you look at it from the rear) My original 75 motor was
marked 3 degrees ATDC.  The flywheel I have now has a 6 degree BTDC
"hump".


Gordon
75 Mk I/Drake 1.9
http://pws.prserv.net/gforbess/scirocco/scirocco.htm