BTW
1. I was thinking of a muffler as a tuned pipe. Hence the collector. The colector (exhaust manifold) on mine had a dual purpose as cladding to retain cylinder heat. Steam engines (unlike IC engines) like hot cylinders, so insulation (cladding) was traditionally used. I thought I'd do them one better by using the exhaust heat to insulate.
2.) Westinghouse type steam engines come in all sizes. The term generally refers to a high speed steam engine of two cylinders with a block arrangement similar to a modern IC engine, IC style connecting rods and an oil pan. Large variety of different valve types were tried.
My Westinghouse type full sized steam engine isn't huge in size. Slightly smaller than my 6 HP Listeroid single diesel generator engine.
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