Re: KR Wilson Combination Machine Raising Block
Hello Bruce of MN,
I have a 1930's piston Koetheriser machine patented by Emil Koether. It squeezes the piston through the gudgeon bores into a more cammed shape, which is then set in by shot peening all around the gudgeon bossed inside the piston. There was a post showing one in a mobile truck by Old Car Mart on this forum a while ago. I expanded one piston 0.0095, another by 0.0055 and the other two by 0.004 inch. Engine now runs very quietly. Con rods were mismatched by 45 grams too. Evening-up both ends of all 4 rods by weight also made a big difference. Again not on a Model A, but a 2.5 litre English Riley.
SAJ in NZ
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