Question about Plymouth Gran Fury
Factory setting was 2 degrees advanced, but most ran far better at 4-6 degrees. Limit on timing is how far you can go without hearing any detonation when you "get on it" under a load. When you reach that point, back off a few degrees. Advancing the timing lights the fuel in the cylinders early. At speed, the time it has to fully burn is very short. The sooner you light it, the better the chance that all fuel is converted into usable energy instead of going out the exhaust. The limiting factor in this is fuel quality as most available fuels are nowhere near the quality they were when your engine was produced.
Posted on May 29, 2011
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Posted on Jan 02, 2017
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