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Got it for $180 with a mechanics lean (long story got abandon at my brothers shop) missing valve cover and radiator and it has snapped timing belt (looked like leather belt) but 0 signs of witness marks on pistons with borescope SOO ima slap a belt on it and hope for best, has all the whatever...

If you did an OBD1 B18C or B16A swap into your 5th gen Civic VX, chances are you are throwing code 41 if you haven't converted the Oxygen sensor over to operate in the 4-wire way your ecu (like a p28, p30, or p72) is expecting. If you have an automatic ECU, read this first: Convert a Honda...