1983 Moto Guzzi 1000SP Mk2 Moto Guzzi 1000SP Mk2 The V-Twin in the SP is 948.8cc. Bore is 88mm, stroke is 78mm. Cylinders are angled 90° apart, sticking out to the sides of the motorcycle. Between the cylinders is a single camshaft, shoving pushrods that move rocker arms that open the two valves in each cylinder. The camshaft is run by a duplex chain on the front of the engine, a chain that also spins the oil pump. A pair of contact breaker points in a housing on top of the engine controls ignit
