Overhead Valve Internal Combustion Engine

An overhead valve (OHV) internal combustion engine that comprises:

• an engine block with at least one cylinder;
• at least one cylinder head mounted on the engine block, the, or each, cylinder head including intake and exhaust ports for connection to intake and exhaust manifolds, respectively;
• at least one intake pushrod assembly that engages a respective intake valve rocker arm at an upper end and a respective intake valve lifter at a lower end;
• at least one exhaust pushrod assembly that engages a respective exhaust valve rocker arm at an upper end and a respective exhaust valve lifter at a lower end, at least one of the intake and exhaust pushrod assemblies being a jointed pushrod assembly and comprising:
• an upper pushrod segment for engagement with one of the respective intake and exhaust valve rocker arms at said upper end;
• a lower pushrod segment for engagement with one of the respective intake and exhaust valve lifters at said lower end;
• and
• complementary joint members defined by lower and upper end portions of the upper and lower pushrod segments, respectively, that are pivotally engageable with each other so that they can include an angle of less than 180 degrees;
• and
• at least one pushrod guide assembly mounted on one of the engine block and the, or each, head, the, or each, pushrod guide assembly defining at least one passage, the complementary joint members of the, or each, jointed pushrod assembly being received in the passage to be reciprocally guided in the passage.