Can I put a 1.9 4 cyl with transmission from a 1993 ford escort Lx into a 1998 ford escort se..? If i can…will i have to change or modify anything ?
Simple answer. No
Long answer. Anything is possible. You would have to change the computer system and wiring and mounts and exhaust and sub-frame and, and more work than it is worth in my opinion. Then you would be looking at being held to a different standard when it came to any emissions checks.
Here are the wiring diagrams for the transmissions for both vehicles for a quick visual comparison.