Please help a newbie here: I'm trying to re-build a 1992 Mazda 1800 F8 motor. It's 4 cyl, 1800cc, carb, SOHC - it runs in an LDV. It belongs to a mate, who's a police detective. It's my first Mazda motor. Trouble is, we're in rural South Africa - and there's no one to ask for advice. I don't have a manual - I've searched - for many hours - no luck. The F8 motor was also used in the Rocsta, Mazda626 1.8, Econovan and Bongovan. Any help would be much appreciated - like basic tune-up specs, torque specs, bearing and valve clearances. many thanks!