Engine Block
The S54 engine block is cast iron in order to absorb the high forces produced by the crankshaft (combustion pressure and high engine RPM).
The engine block has cast provisions for 3 knock sensors and the crankshaft position/RPM Sensor (on the intake side).
The cylinder bores are 87 mm in diameter and are spaced 91 mm on center.
The "bare" block weighs approximately 105 lbs. (48 kg).
