John B. said: (quoted from post at 15:38:50 07/25/10) I believe on LP engines the sparkplug gap is considerably closer than on conventional gas engines.
It takes more voltage to fire across the gap in a LP fuel mixture than a gasoline fuel mixture. That is why the gap is usually narrower. The problem with the old tractors is that they probably only have about a .025 gap to start with so you can't narrow them up much and still have a wide enough gap to get a good spark to start the ignition. About the best you can do is to use low resistance plugs and wires to obtain the best spark available.
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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