MP DISTRIBUTOR TIMING CURVE 340

Bewy said
CFD,
Post #30. Congrats!!! That is EXACTLY how you find the correct amount of idle timing.
Now for the next step:
- you can use any combination of MVA + init to get the 25* [ eg, 5 +20, 15 + 10, etc ]
- do not go less than 25*, but a few degrees more will not hurt.
- if the centri curve in the dist is ok, you can probably use the factory init [ static ] timing & not touch the dist.
- make sure you use an adj VA unit. Check that timing is steady at idle.

How does the VA adjustment factor in?

I assume that you want it to come in quick as to get to 25* as soon as it starts......That would entail the adjustment screw all the way out. (weakest spring pressure)

But, on the other hand, you would want it to leave quickly upon acceleration.....That would entail the adjustment screw further in. (heavy spring pressure)