You had better luck than me. My W9 had a loud knock when I bought it. #4 valve was running a 3/8" gap. Set it to spec and I suddenly had a dead cylinder, but no noise. Had to be 3/8" to run. Rockers, pushrods, tappets, rocker shaft all OK. Pulled the head and all the valves were perfect, near new in fact. Pulled it into the shop for some rear end work and pulled the camshaft. While I couldn't tell if it was bent, it was obviously damaged directly adjacent to #4 lobe. Looks like something got wedged in. Had a replacement cam on hand and swapped it out.
Should have had the spare cam ground to 650 gasser specs! But I did find out the engine has high-dome pistons.
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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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