I just picked up a 1980 280ZX, the engine ticks a bit. I wanted to adjust the valves but can not find the gap for the intake and the exhaust. Anyone know what they might be? I am having some trouble finding a manual locally.

Click on this link and you'll have a pdf copy of the 1980 Factory Service Manual which in many respects is better than a hard copy. http://www.xenons130.com/files/1980%20280zx%20FSM.zip