ok since this thread is soooo long, i didnt have to to read all through it, but the best 4cly engine of all time is the TOYOTA 20R ! it was built to last forever and deliver lots of trouble free power. they were built with super thick cyl walls with water going all the way around them for much better cooling (unlike most other egines) , and they also had big double row timing chains that lasted for ever! i've seen alot of them with 300K and 400K miles on them and still going strong! of course toyota soon realized that they were built too strong, so then shortly after the 22R's came out, they started cheezing em out really bad!