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I've received a LOT of flak over this but it seems to work well for me
so I keep on doin' it.
If it's got vacuum, leave it connected. If it doesn't, no problem.
Set the timing at about 21-24° BTDC at idle. Drive it some, especially
at moderate or low speed under heavy load (i.e. up a hill) after it is
warmed up good. If it pings, knocks or kicks back against the starter,
back the timing off a few degrees at a time until it is tractable.
This may not satisfy emission authorities but as I say, it works OK for me.
GFD III
Total advance may go over 40°. If it runs well and doesn't ping or knock,
no problem.
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George Downs Bartlesville, Oklahoma
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