just a few questions

1. does anybody know of any sites that have directions on how to port and polish?
i have an extra head laying around :naughty:
2.and also does anyone have the obd0 ecu for the b18a1 ls, to trade for an obd1 or just sell, if so how much total with shipping to toledo,
3 if there is actually oil build-up up into the intake manifold, could the valve guides be faulty too?

3 if there is actually oil build-up up into the intake manifold, could the valve guides be faulty too?
how could oil travel opposite direction of air flow...your problem might be your pcv valve