oh got ya. looks like 16.5 it is. for the time being at least:w2:

I would never go to any timing above 16-16.5 degrees without studs and an o-ringed head.The increase in cylinder pressure will cause a premature failure of the headgasket.

I got 19* on mine and my mileage is crap. MY mileage went from 18.5 to about 15 with upping my timing. I'm going to back it off to about 16.5* or 17* and see what happens

How much timing can you go and still start easy in the winter?

Mine started fine at 19*. Well If the temp stayed above 8* after that it was a bear.

I ran mine at 20 degrees all winter long with no issues at all.They are a bit fussy to start when you run higher timing but can be started.With mine as long as the temps were above 20 all I had to do was the normal start up procedure,below 20 I had to cycle the grids a second time and she would start off.

set mine to 16.5 the other day it dont run bad but sure run alot smoother my first good pull on it snaped my inputshaft