by reelrazor » February 11th, 2005, 12:48 am
http://www.groupk.com/rearseizures.html
Read the bit about cylinder torsioning.
#1(mag side) and #3(PTO side) fire at the same time(same coil). The crank torsions, the timing is controlled by the mag side, the load is applied at the pto side(a long ways away).
I have confirmmed the timing advance theory with a timing light and an old Sun 'scope.(marked the clutch and mag for tdc, dialed in the light for 5krpm at the mag-looked at how the pto side was and yep, crank retarded=timing advanced). So, apparently have the OEMs because they are building ignitions to compensate now.
JGW
No substitutions for revolutions