Timing??

[savanaman]

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

[Brett]

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.

[Martiny]

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.

[borgue]

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