Hi all,
Another question; I’m removing the head on my Miata 1.8L, probably going to
do a valve job, definitely going to clean out some carbon. Any advice on
anything else I might want to do while I’ve got it this far apart (repairs,
maintenance or improvements)? I’ve got some high RPM (4500+) pinging with
smoke and have some cooling problems on really hot days (often here in
Phoenix) when I run the a/c (although I’m putting in a new, bigger, radiator
and a new thermostat and may have that licked). I used to have lots of
pinging at all speeds, but cleaning out the EGR passages took care of most
of that. I don’t think the previous owner ever got it over 3000 rpm or
drove more than 3 miles at a time.
I was going to do a timing belt as it has 93K on it and I didn’t know if the
previous owner had done it or not. Got the valve cover off and saw that the
belt says Gates on it. I think I’m safe in asuming that the factory didn’t
use Gates belts. There’s one thing I guess I don’t have to do.
TIA,
John (’94 Miata)