I have a 1982 280zx turbo and in my service manual, it states the ignition timing should be set at 20 + or - 3 degrees btdc. I was reading a service manual for an 1983 280zx, and this one says the timing should be set at 24 + or - 3 degrees btdc.
The question I have is this: does the 1983 turbo car have the same total advance, or is it four degrees higher than my 1982 car?