ive got a 93 honda civic ex 1.6 sohc 5 speedeverything is stock the motor is blown and i was considering putting the dohc in the car my question is will the stock wire harness and ecu from the sohc work with the dohc or is there somethings that have to be changed?
please help

 

the ecu won't work at all. You'll need to get the ecu for the engine you're swapping to (it comes with almost every complete swap package).

 

+1

 

so will the stock 1.6l wire harness work? just have to switch the ecu thats compatable with the engine that im using

 

Yeah, the stock harness would work, all you need is to add an extra wire

"Notice the markings on the ECU; they read xxx-p72-xxx, which is the appropriate ECU for a B18c swap. Since the civic already had vtec, the only wires that needed to be added were at D3 for the knock sensor and A17 for IAB. The pinout for the IAB can be switched from A20." from http://www.c-speedracing.com/howto/b18cswap/swap4.php

Also remember that you need to change the motor mounts and axles as well.

 

sorry havent been able to get back on here in a couple days to read your reply....... i can change the motor mount no ploblem.......... i also see that u had mentioned that i would have to change the axels............. why would that have to be done if i still got the stock 5 spd in the car......... if i were to change the axelswhat am i supposed to use.... tryin to get all the info that i can before i do all this and get stuck thanx

 

Believe it or not, that isn't 100% true. You can run a DOHC VTEC motor with a SOHC VTEC ECU. You'll just be stuck with the lower rev limiter. And the fuel maps won't be perfect but the ECU will compensate (that's what your primary O2 sensor is for!)

You have to swap axles because you are swapping transmissions. You also need a shift linkage and mounts, and you will probably need to modify your stock engine harness. The details will vary depending on what engine/year you get. There is a TON of info on this subject out there on the internet.

 

Also since you have the p28 ecu on your car, you can chip it, allowing you change the fuel maps.

 

thanks for all the help but im seeing that i am starting to get different kinds of information from different ppl can i get some websites that i can read to get more info.....also to if i go from sohc todohc ill have to change transmissions
thanks