Re: How Important is OMC Ignition Timing?

[legendre]

quote Richard A. White:

So this process should be able to work on nearly all 2 cylinder opposed motors? With that being said, one need to find where one set of points opens, using a Ohm meter, then ensure the other set opens exactly 180 degrees from that.

Am I correct? I have some Mercs, that need this done as I have always used feelers gages to accomplish this, but it is close is not always good enough.

Absolutely. Establishing that correct fire-point for the ‘first’ cylinder is important.. but setting the two fire points exactly 180′ off is even more important, if the motor is to run smoothly.

In other words, the relative (cylinder vs. cylinder) timing relationship is probably more critical to running quality than precise absolute (cylinder vs. crank position) timing.