Norton Manx Nourish 750cc Racing Motorcycle

Frame no. none Engine no. C69A46

Norton's ubiquitous Featherbed frame has long been the special-builder's friend, especially in Manx form, as seen here. Badged as an AJS, this immaculate classic racer combines the proven Norton Manx chassis with the equally well established Nourish 8-valve parallel-twin race engine. The latter's origins go back several decades to the time when Harry Weslake first offered an 8-valve cylinder head conversion for the Triumph twin. Eventually the Weslake company built its own complete full-race engine, albeit one still constructed along Triumph lines. When Weslake folded, the parallel twins were taken up by engineer Dave Nourish, who continued to offer them in a range of capacities and alternative crankshaft arrangements to suit many forms of motorcycle sport. The unit in this machine displaces 750cc and has 'Z' cams and a compression ratio of 10.25:1 The carburettors are 34mm Amal Concentric Mk2 and the ignition is by ARD. Power is transmitted via a Newby belt primary drive and clutch to an NRV five-speed gearbox containing T140/150 internals. The front fork boasts magnesium yolks and sliders, while the front brake is a twin-disc Norvil with AP Lockheed callipers. Presented in full working order, this unique machine comes with bills, templates, technical drawings, and notes relating to its construction.