As you said you had it apart you no doubt noticed the degree of advance shaft you have assuming you have the IH distributor. It can be one of several, like 25degrees, 30 degrees or 40 degrees. Normally if all is in good shape they will be timed to tdc at very low idle speed and gradually increase to max advance at rated engine speed. With normal gasoline engine, flat head pistons, thinwall sleeves the engine will perform overall best at 30 degree advance. You can do any variation that suits you. There are so many variations in pistons and head changes that it is really difficult to give an exact figure but it for sure has to advance when engine speed increases. Too much it will run ragged unloaded, detonate under load, too little it will sound dead and lack pep and power.
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Today's Featured Article - The 8N and the Fox - by Zane Sherman. Dec. 13 1998, Renfroe, Alabama. Last niht I dreamed about the day that I plowed the field of about 10 acres over on what Jimmy and Dandy called the Ledbetter field. I was driving the 1948 8N Ford tractor that Jimmy bought in 48 new This was prebably in about 1951 and maybe even befor the house was built. This would have made me to be about16 years old and I drove the tractor for nothing and would have paid to drive it if I had had any money which I didn't, but neit
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