i wasnt sure where to ask this but i just picked up a 91 civic 4 door ex and i was thinkin it was a d15 or one of those little multi point motors when i looked at the block code today i saw just ZC i have had zc motors before but they were dohc..
my question is what is this motor doing in this car is it stock for this car or do you think it was sawpped at some point in its life? it runs really smooth too. and the strange thing is its dualpoint