Timing and WOT

[Wkshp101]

I've read on several occasions that static timing needs to be done at WOT. I can't figure out why?? The dist advances at static WOT but the timing gear doesn't move - nor does the flywheel. If anyone could help me understand, that would be great......

 

[Frank Acampora]

Re: Timing and WOT

Both static AND dynamic timing need to be done at wide open throttle, all ignitions, distributor or not.

Because these engines do not have a vacuum advance nor do they have a mechanical advance inside the distributor, and because timing at idle can vary, and finally because these engines are run quite a bit at full throttle. the critical timing is total advance at WOT. Too little and performance suffers, too much and the engine is damaged.

So, you set the throttle to WOT and on the distributor engines turn the flywheel by hand until the top plug sparks. Then you adjust it until the timing is at 30 or 32 degrees advanced.

 

[Wkshp101]

Re: Timing and WOT

So I put the control at wot. I turned the flywheel and low and behold it was sparking about 15 teeth before the 36 mark was at the indicator lines on the motor. I removed the belt, spun the flywheel till the 36 indicator was at -4 and re-installed the belt. I checked the spark and it now sparks somewhere near where it is supposed to. I did a quick start and it fired right up. I'll test it in the water tomorrow. Here's hoping!!! Thanks again Frank.............