[TR] tr3 engine timing

[Geo Hahn]

My method is similar to what Bob has described though I try to get the
initial set-up at about 4* then use the vernier from there.

Probably obvious but I'll mention that you want to set the points gap
before you set the timing.

My full (simple) sequence is:  points gap, timing, carb sync, mixture
adjustment & idle adjustment.  The engine only needs to be hot for the
last 2.  This assumes you start with good clean compenents (plugs
wires, etc.).