What are the differences between Cadillac 25t and 28t?
1 Answers
Differences between Cadillac 25t and 28t: 1. Different engines: The Cadillac 25t is equipped with a low-power engine with a maximum power of 184kw; the 28t has a high-power engine with a maximum power of 198kw. 2. Different cylinder head materials: The Cadillac 25t's cylinder head is made of aluminum; the 28t's cylinder head is made of aluminum alloy. Most high-power engine models have a lower compression ratio to prevent knocking during engine operation. Knocking is an abnormal combustion phenomenon inside the engine, which is harmful to the engine. When the piston is in the compression stroke, it moves upward to compress the combustible mixture. If the pressure in the cylinder is too high, the combustible mixture may ignite prematurely before the spark plug fires, which is known as knocking.