Just got the car back with the rebuilt 4G63T installed. What a joy: the lifters are quiet, it doesn't blow smoke, revs higher and when asked it hauls some serious ass ...
Have to adjust the timing and clean up a few loose ends, as it seems to be running a bit lean.
Next, on to the AWD conversion.
Here's a bit of trivia for you all: My 93 Expo AWD van has the 4G64-16v SOHC. The cam belt developed a problem and twice in 3 days jumped a couple of teeth. I think the problem was slight oil contamination, as the timing cover was damaged and letting in some oily dirt. Fortunately, two teeth is not enough to bend valves in the 4G64-16v. Put in a new belt and its been OK for a week.
Stewart DIBBS