Ms2 v3.57 timing issue

[skirkland1980]

1983 280zx turbo using 83 vr distributor. I've been having a hard start problem. I determined that one problem was that my distributor rotor was too far from the cap terminal. So I set it so that the leading edge of the rotor was at max advance and the trailing edge at max retard. Now the car will start every time. However, after setting trigger offset and getting the timing light to match the map, when I turn the car off and restart it doesn't keep the same ignition timing. The car seems to run well if the trigger angle is set at either 12 or 50. I noticed at 50 is the only time the ignition timing will move with rpm but it retards. It's set to advance.

[skirkland1980]

Tinkered with the car today. I set my engine to tdc #1 compression stroke and adjusted the pickup coil to line up with the points on the reluctor. I started the engine and set trigger offset. I set it to 67, initially was 60 with engine timing at 40 degrees added 2 degrees at a time until I had 30 degrees at the engine. I turned off the engine and restarted now it's back at 40 degrees of timing on the engine. Everything is tight in the distributor. Also after I set it back to 'use table' the timing still remains locked.

[skirkland1980]

I believe I've made some progress. It seems that with every trigger angle adjustment made that ms must be restarted. I ended up with 78 degrees of trigger angle and it appears as though it's holding the correct timing upon every startup. I'm noticing that my timing is advancing slightly with rpm but not enough. I will try adding latency to see if that improves.