This GM HEI has the typical gummed-up mechanical-advance mechanism. Note the corrosion on the advance-weight pivot pins (arrows) caused by voltage arc-over and lack of lubrication. Brad Urban at The ...
What's An Advance Curve?In the basic design of an internal combustion gasoline engine, an air/fuel mixture burns in the combustion chambers to force the pistons down, which in turn, spins the ...