Re: omc 4hp timing marks

[legendre]

quote Wedgie:

quote legendre:

With the engine rotating in the normal running direction, the first flywheel mark to cross the datum is the most advanced. Any additional marks are progressively less advanced (or more retarded – whichever way you prefer to view it).

Thanks Legendary . That makes it easier to understand 😉

Not "legendary", but legendre.. it’s a surname. I’m neither a legend in my own mind, nor in my own time.. 😉

And I’m glad it is helpful, but I should have qualified it.. a more accurate statement is "With the engine rotating in the normal running direction, the first flywheel mark to cross the datum, after the reference cylinder has traversed BDC, is the most advanced". In other words, the first mark to pass the datum as the piston is heading back up to TDC.

Any gearhead should have understood, but it could be plenty confusing to the newbie.