All I know is that in the 50's may dad's H with a pressurized radiator would leak out the overflow with temp in the 90's-100 at full load, and I do mean full load. I am guessing that was a 4 lb, but that is only a guess. If correct a 7 lb might have helped, or maybe not, because the engine temp in the afternoon would be on the edge of the red. Probably should have shifted down a gear. Also we did not use antifreeze in S Texas, that would have helped with the overflow also. For the way most old tractors are used today I doubt if it makes any difference.
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Today's Featured Article - Fabrication (Who Me? Make it myself?) - by Chris Pratt. First of all, what are the reasons for not fabricatin your own parts? Most judgements on what should be purchased rather than fabricated stem from: Originality - If the tractor restoration is to be 100% original, it is likely that you should spend the time and money to locate the component in the used or New-old-stock market. Since this can be extremely difficult, you may want to fabricate the item or purchase a modern replacement temporarily, but eventually, you s
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