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Old 06-17-2015, 10:00 PM   #28
Kahuna
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Join Date: May 2010
Location: NorCal
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Default Re: Do you use a timing light ?

Martin
Mine is a Helmet distributor, converted to electronic trigger amd 12 volts
I know very little about ignition advance, but am aware that combustion chamber design dictates advance and how much a particular engine needs.
My engine has modified Canadian aluminum heads (modified only for valve lift and squish), is 290 CI, has a large cam (Potvin 425), and dual carbs.
The engine appears happiest using about 10-12 degrees initial and a max of about 24 degrees. I just wonder, short of another dyno test, if the engine could stand another few degrees, as I never can hear it ping. Just my ramblings
Jim
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