I've had great luck with mine. Runs strong, burns no oil, and gets decent mileage. Not quite as good of mileage as the 1.6 16v, but I have more power and its noticeable.
Just for fun I did a search of 1.8L to see what came up. I got tired of looking through the pages when the only two negative comments that stood out were the overheating thread and one post about timing chain issues derived from running incorrect oil viscosity..
I'm really not worried about either problem as I always use 5W-30 in my kick and the cooling system is in good order.
I think I'll motor-on with the 1.8 Sport for now. If something should happen though I'll probably upgrade to a 99+ Tracker 2.0 5-spd.
The Ford 2.3L I4 is a good engine to be sure, but I'll stick with the fuel injected 1.8L for now thanks.