Not quite on this subject, but after 20 years of running my 87 model 4450 with the stock two 6V setup, I converted to a single large 12V. This tractor never did crank very strong, always did hesitate a bit pulling that first cylinder over compression. For years, others have told me how well their tractors work when replacing those two series wired 6V batteries with a single 12V in the left box. I installed the largest Interstate brand 12V battery that would fit the battery box, I believe it is rated 950 CCA. I added a short heavy ground cable bolted under one of the starter mounting bolts. It works great, cranks faster than the twin 6V setup ever did. I suspect eliminating two sets of post / clamp connections and 3+ foot of cable eliminated a lot of voltage drop. I used it all last season with good results, never use the tractor in winter, so was not too worried about very cold weather starting. I have cranked it up several times this spring when the temp was not above 20 degrees, and it started better than it ever did with the two sets of twin 6V batteries I have worn out in it.
It cranked faster with the single 12V in warm weather and also cranks faster at 20 degrees.
Where it used to have to turn a half dozen times to start at that temp with the old setup, it now lights off on the first turn or very close to it.
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Today's Featured Article - Memories of an IH Super A When I was ? up to 10, I worked on my Papaw's farm in Greeneville, TN every summer. As I grew older (7), it was the thrill of my day to ride or drive on the tractor. My Papaw had a 1954 IH Super A that he bought to replace a Cub. My Papaw raised "baccer" (tobacco) and corn with the Super A, but the fondest memory was of the sawmill. He owned a small sawmill for sawing "baccer" sticks. The Super A was the powerplant. When I was old enough (7 or 8), I would get up early and be dressed to
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