Hypothetically

[Wevil Kenevil]

By hanging a lower half of the engine by the same hole in the top of the connecting rod and measuring the upper most point of the magneto magnet to the case tell me if the motor has an advanced or retarded timing given I have the distance of a stock or standard timed motor?

Let it hang and mark the spot where 1 o'clock falls with due respect to where it should be.


Anything before 1 o'clock being retarded and after to be advanced.

 

[Wevil Kenevil]

Yes I did this with a yd100 and the yd 100 clearly showed it was slightly advanced or further more forward of where 1 o'clock would be. Both motors are the same piston size, connecting rod and needle pin bearings size

 

[Wevil Kenevil]

I'm trying to figure out why a motor is running smoothly but hella hot.

 

[Wevil Kenevil]

Sparkplug is a standard ngk

 

[Venice Motor Bikes]

Use a 'piston stop' to find TDC, then mark it on the magnet & engine case... then you can use a timing light to actually see what the timing is doing on both engines while they are running.

You won't be able to see the actual timing numbers, without a degree wheel; but this will give you an idea about any differences in total advance (& basic timing position) between the two.

I posted a video on here several years ago showing how the timing advances on a stock CDI using a degree wheel & timing light.

 

[Wevil Kenevil]

Use a 'piston stop' to find TDC, then mark it on the magnet & engine case... then you can use a timing light to actually see what the timing is doing on both engines while they are running.

You won't be able to see the actual timing numbers, without a degree wheel; but this will give you an idea about any differences in total advance (& basic timing position) between the two.

I posted a video on here several years ago showing how the timing advances on a stock CDI using a degree wheel & timing light.

Thank you Norm! You are a powerhouse of knowledge! I will check out the vid. Thank you sir!