280ZXT timing

[russ in va]

My 1970 240 has a stock 83 280zx turbo engine.

 

I've determined from consulting the FSM that the base timing should be set to 20. I've done that and the car runs MUCH better, but when I spin the motor up the timing does not change at all. It stays at 20 from idle to 4k rpms. Is this the way it's supposed to be? I've poured over the FSM and I can't find any details on what the timing curve is. All I can find is the 20 degree base timing spec and the fact that timing is controlled by the ECCS.

 

Also, to get 20 degrees out of it, I have the distributor adjusted to the max. If I want to try a few more degrees, can I pull the dist out and reclock it? I'm not sure if it's only got one position or if it's a gear driven type where I can just turn it one tooth and get more adjustment.

 

Any advice on timing on the 280zxt is appreciated!!

 

Thanks,

 

Russ