My d15b2 has siezed and now im looking into a SOHC ZC. What do i need to do to have the swap successful and have the car passing smog and everything running fine. Can i use parts from the d15b2? I know that i can use the same tranny but im not sure if im able to use the same ECU. But i was reading somewhere else that if i do use the same ECU im going to need to do a MPFI swap also. Is there anything i need to know in particular to do everything right and also what other parts are needed for the swap. So if someone can help me out with my situation i would highly appreciate it. Im pretty stressed out right now because my car and I are out of town and i need to go back for school so i have to get everything done ASAP. Thanks.

Also my car is a 1991 Civic Sedan LX & im pretty sure its OBD0. & the ZC is OBD1 im thinking? What do i need to swap that over?

 

if you want the easy route just swap in the new zc sohc longblock for the old d15b2 longblock and call it a day...if you want to go for the legal mpfi route in your vehicle then you have to do the following:

zc sohc longblock same year or newer than your vehicle
complete d16a6 intake manifold with sensors
td-02u or td-18u dizzy
si resistor box
pm6 ecu
pm6 intake tube

i have done this to my 91 civic lx and details and pics are in my build thread.

 

Covered in thread already OP please search first.

 

Hes gone soft. Even said Please J/K