Posted by wisbaker on April 11, 2012 at 10:21:01 from (207.118.181.99):
In Reply to: Valve Seats posted by Sam from WA on April 11, 2012 at 09:17:27:
Am I missing something here? Most of the really old tractors were designed to run on distillate also known as tractor fuel. My understanding is it is almost like kerosene. Would that not be lead free? Did distillate heads on our letter series John Deeres and Farmalls have hardened valve seats? Whats the story? Was this a conspiracy between the lead and automotive industries to put lead in our gas and poison or air and water? Leaded gas has not been generally available for 20 years here, why aren't we hearing stories about massive failure of valve seats in our internal combustion engines?
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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