Arrangement for preventing bearing-related noise in internal combustion engines

An internal combustion engine with variable compression, the engine comprising:

• a crankcase part through which a crankshaft may pass;
• a cylinder receiving part for receiving engine cylinders;
• a tilt axle bearing between the crankcase part and the cylinder receiving part, extending along the parts and connecting the parts to enable them to tilt relative to each other;
• a tilt mechanism between the crankcase part and the cylinder receiving part and located on the engine away from the tilt axle bearing and operable for tilting the parts with respect to each other around the tilt axle bearing;
• pre-stressing members between the crankcase part and the cylinder receiving part normally urging the crankcase part and the cylinder receiving part to tilt away from each other and to counteract any bearing play in the tilt axle bearing and in the tilt mechanism during running of the engine and during engine compression.