BTW,ALL great info so far !!! Glad to see people have knowledge and are not "guessing" on here!
Something else you can do that is helpful.If you have a GOOD timing light with the adjustable avance knob on the back of it(Like a Penske)and you know FOR A FACT your front crank hub and your pointer are set at TRUE zero,you can set your engine at different RPMS ad actually see where your advance is coming in at and what your total advance actually is.
Like has been said below,The MORE compression and the MORE advance you add to the engine ,the MORE critical it becomes.
In a REAL seroius race engine,we can actually "burn them down" with too much advance(Yea,melting pistons!!! )
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Today's Featured Article - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
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