1. Incomplete Combustion: The larger combustion chamber in the 250 cid cylinder head will reduce the compression ratio of the 200 cid engine, resulting in incomplete combustion. This can lead to reduced power output, increased fuel consumption, and rough idling.
2. Piston Interference: The larger cylinder head may cause the pistons to come into contact with the valves, leading to engine damage.
3. Cooling Problems: The 250 cid cylinder head may not be designed to handle the heat generated by the smaller 200 cid engine, potentially causing overheating issues.
4. Oil Leaks: The different design and dimensions of the 250 cid cylinder head may not match the oil passages and gaskets of the 200 cid engine, resulting in oil leaks.
5. Engine Mounting Issues: The 250 cid cylinder head may not have the same mounting points or bolt patterns as the 200 cid cylinder head, making installation difficult or impossible.
To ensure proper engine performance and longevity, it is essential to use the correct cylinder head designed specifically for the 200 cid Ford engine.