I thought I'd posted this previously, but apparently was among a batch of photos that expired as a result of drag and drop metadata. Here they are again.
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| A rectangular piece was cut and rolled, then a cut line was marked on the inside edge. |
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| Some tac welds in the .025" SS. |
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| It was easy to blow through using .030 wire. I should have had .025". |
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| One hole was drilled for the butterfly shaft and then then where to drill the opposite hole was found with a folded piece of paper. |
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| Drilling stainless is a pain. The drill bits love to grab when they finally break through. Backing up with wood helps. |
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| I cut a tube at an angle and traced around it to make a pattern for the butterfly. |
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| The butterfly template. |
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| The installed valve. Riveted baffling material makes the flexible gasket on the butterfly. A drilled brass rod secures the butterfly. The valve fits snuggly. |
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| Engine side view. It's slightly egg shaped but a hose clamp on the scat tube forces it round. |
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