firing point

xlcc

New member
First off,I am impressed with the information on this site.This is my first post even though I have been browsing for a while.
I am having difficulty on a 420cc clone engine that I have placed in a snowmobile I built figuring the exact location the spark plug fires with the stock cast iron flywheel and coil.Anyone know where the flywheel magnet should be in relation to the coil legs to get 32 degrees advance?
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Its been a while since i did my clone 196cc engine . But it was around 2.5".
The 420 surley has a bigger diameter flywheel.
 
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