Posted by Kaegi on Wednesday, June 11, 2008 at 12:22:40 :
In Reply to: M37 timing question posted by David Sherman on Wednesday, June 11, 2008 at 11:43:26 :
all those old manual timing specs are from when gasoline had about as much octane as coleman white gas. I time my flaheads at around 6 or 7 degrees BTDC. 89 octane pump gas is like rocket fuel for a flathead. ;/). I would replace those springs if your concerned about them they are probably bad.
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