Ok so I bought a 1973 ball bearing hs50 670038….then I read an article, probably by Markus, stating that Tecumseh only made two hs50 3” shaft motors thst rupp used…670050 and 51….l looked it up….so this wasn’t either one of those motors….but I found a new crank 33837…so I bought it….and now we created a hs50/40 (again idea from Markus, great motor 40+10 thanks!) all the special ingredients…245 cam .020 over….6282, 18 pounders….and a light hs40 fly wheel and shroud….
well there you have it rupp guys a motor that will smoke that belt….
well there you have it rupp guys a motor that will smoke that belt….