Quote:
Originally Posted by updraught
If it's an old engine with low compression, say 50 psi or so then it may need to be advanced to give it some zip and zing on todays fuels. Maybe that is what the previous owner did.
Good to know how much compression you have anyway.
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Since the timing lever gives a total of 40 deg. advance when fully down, there would be no need to mess with the setting of the distributor cam! 40 deg. is more than enough advance, even for a worn engine.