Hi All
Can someone let me know or tell whee to find what the timing set up will for a 12a
Also do you take it form which lead?
Thank you very much
I\'m moving this to the technical section.
If its anything like the later 13B, there will be a pin above the main pulley, on the pulley there are two marks (red and white I believe) this represent trailing and leading. I think, its been awhile though.
If you mean: "on which lead do I attach the timing light", then, it Number 1. That is , the Rotor closest to the front of the car.
The important one is the Leading, it does the most work. The Trailing will fire just after Leading ( that why its called Trailing !). Maybe 5 degrees, or anything up to 20 degrees after, depending on which car/model you have.
assuming stock porting and intake:
1977-83 12a= 2 degrees BTC leading and 19 degrees ATC trailing
1984-85 12a= 20 degrees BTC leading and 20 degrees trailing
double check timing marks on center pulley as mine were heavily corroded and hard to read
got all this from racingbeat and worked a treat on my 85 12a off boost.
good luck!
Ollie