last weekend i lost one of my two orion vortex08 4.0t motors to an overheating issue. strange thing was i was running both motors at the same ratio + timing(in this case same timing means i lined up the timing mark on the back plate with the centre mark on the can) in the same car. one seemed more then happy but the other gave up last weekend. when checking up i found one difference between the two motors was the timing mark. the motor(1) that gave up had the timing mark as this motor had.
but the other motor(2) had the timing on the backplate very close to where it narrows at the relief for the poles to come out.
so basically either the motor1 had lots of positive timing on it or motor2 had negative timing on it.
have other people compared timing mark locations?
is the timing mark checked to be zero timing and is it on purpose or is it a production tolerance thing and thus the timing mark location cannot be trusted?