I tune motorcycle/powersports engines as a good part of my living and farm which, I have some old tractors mixed in. A 460 is one of them. In my business jetting being spot on or off is the difference between a seized engine or melted piston, or an engine that will lead a healthy life. I use the same skill set to tune my old tractors. Now an old tractor can be fairly forgiving and can be hard to always get a good read on a spark plug, and they don't have as good of carburetor as most of what I normally deal with. However the same principles exist in a gasoline engine whether it is a generator or a pickup truck or drag car. I will not deny the newer fuel is bad, I will also not deny that it is possible to get a header red hot and still not ruin the engine. What I don't agree with is the fact that you cannot tune an engine to run on this gas today or all the stuff you in particular spew about how everyone needs Hi-Test in their old tractors. I have responded to a few of your posts about this over the years and I have never ever seen you reply with mathematical proof that these old tractors need such high octane provided the fuel mixture and timing are set properly. Just about everything that happens in an engine has a math formula to explain it. Needing high octane gas is a product of your compression ratio, cam, combustion chamber and so on that makes up your cranking compression as well as the ignition timing. So how do these old engines with 7 or 8:1 CR end up needing 97 octane???? Teach me, I want to know. Maybe you push your compression ratios or ignition timing or some other factor but I can tell you your theories do not line up with any part of engine science and I have a 6 cylinder IH that runs like a top on Regular gas and it's used often and I don't mean tractor shows.
Show me the numbers and math behind what you tell people and I will let you be.
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Today's Featured Article - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
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