Originally Posted by NI_racing

lol that would be amazingly simple.... if i were setting the timing on a stock T2 with a T2 timing pulley

I have a 6 port (13b NA) turbo (T2 manifolds, turbo, injectors, etc), running a T2 front cover (that didnt come with a timing pulley) and the NA timing pulley. For those that dont know, the pulley will only align on the front Ecentric shaft hub in one way, due to the bolt pattern. Thus being said, most people dont realize that the front cover and pulley are paired and marked accordingly. Thus being said, grab another pulley from a spare engine, and you'll probably be a degree or two off of what the actual timing is, which wouldnt be horrible as long as you stayed on the safe side...

Now for the awesome and fun part... Keyway at 9 o clock, timing mark at 12... doesnt line up for me. Thus the creation of new timing marks on a pulley. Thus the need to establish the closest to exact determination for TDC (flashlight and mirror in rear leading and trailing technique). So once TDC was established, i now need to know what degrees the T2 is set to from the factory so i have an idea of where to start with my timing... NA timing plus boost = bad day. Haynes manual doesnt say Shit! line up yellow mark with needle on front cover and blah blah blah... The only thing ive been able to find is that under boost, between 10 - 13 pounds, timing was advanced (through factory timing advance features) to 16 degrees. Which is awesome except stock boost is gated at 6 pounds.... and that still doesnt gimme a starting point. Oh more food for thought, Mazda was amazing in that the timing pulleys meassure 360mm. Thus every 1 mm = 1 degree of timing. So marking the pulley wont be an issue.... i just dont know where to start.