Question: what is the difference between 4y and 3y engine?
Answer: 4y block same as 3y (for Spacecruisers) but with different casting for extra parts needed for injection system. ... The capacity of the 3y is 1990cc, which they rounded to 2.0L, and if I am not wrong, the capacity of the 4Y is 2200cc, labelled 2.2L.