Datsun LZ20 restored to glory
LZ18 Nissan engines first came to Australia for the 1975 Southern Cross International Rally powering two works Datsun Violet 710s - in some countries known as the Datsun 160J.
The LZ is an interesting concoction from Nissan in that it was a custom-built twin cam, 4-valve head with a narrow valve angle, atop a modified L18B bottom end. Camshafts are driven by a chain of 7 gears and 3 sprockets with a short chain at the top, and all this hardware produced a characteristic rattle at low revs in the rally version, due to high lift valves but conservative timing. At first experience this rattle was rather disconcerting but became endearing to the many fans who followed the golden era of Australian rallying in which this engine played a staring role.