ok here's the story ...my camshaft on my old 89 dx motor(d15b2) snapped ...so i decided to swap in a 94 motor(d15b7) but i'm running into a few problems ...i got the engine in and properly mounted but i have 2 major problems with it...number 1 is the motor smokes white heavy sweet smoke and overheats .....number 2 is there are 2 ports on the back of my block for a cooling ...i plugged 1 up but not sure if thats right ....hope this helps