If i Put a 1.6L in my 90 hatch instead of replacing the 1.5L what would i have to change?? does the computer have to be changed? Do i have to get a new wiring harness?? can someone give me a list or some helpful info????

 

oh lordy.....check out the FAQ, everything u need is in there, look for mpfi swap if u have NOT done so...

 

things to do (in a nut shell)
Find ODB0 d16 engine or ODB1 d16 engine (you will have to convert harness to ODB1 for the newer engines)
convert harness to MPFI
replace motor/tranny mounts while your in there.
keep ur tranny? or get a used SI tranny? thats up to you.

The main thing is to DO YOUR RESEARCH/know the right people. find the right engine - most d series will bolt right up. remember your intake manifold/fuel rail/injectors are not gonna be reused, so grab one that fits the new engine, along with the wiring connectors off of the donor cars harness if ya can. You are gonna make 33X more work for yourself if ya get the wrong engine.

 

thanks man i didn't know what had to be changed cause i thought i would throw a little bigger engine in it but i don't think ill do it got 2 kids don't have that much i'm on my hands to be out of a car or even to work on it. i know quit of bit of people so ill might just tell them to give me a price on everything and just get it done that way or just wait till next summer and do a b18 or h22 swap something with more power for that car. but thanks for the info both of u.

 

There's a lot of 1.6 liter motors.
Which one are you referring to?

 

put the civic aside for now and just buy an 800 dolla cavalier or somethin...

 

Already had a cav don't like them but I'm not sure what 1.6 . I was just trying to up it up a little with buyin a stock 1.6 but which one comes in the si I foregot? But I would prolly do that one..

 

d16 engines are the easiest and cheapest. its a direct upgrade to the d15 it came with.
b16 engines will make more power with DOHC. harder to swap, more $$$

 

might as well find yourself a D16A6, they can be found pretty cheap depending where u live...

 

With the d16a6 would I have to just get a new harness and computer?

 

u just have to multiport, and get a pm6 ecu...

 

just did conversion couple weeks ago to one of my buddy civic EF.

Easy direct bolt-on -D16Y7 from 97-00 civic non-vtec.
If you have DX you need to convert Dual port to MPFI wiring harness.
90-91 Civic Si intake manifold
90-91 Civic Si PM6 ECU
90-91 Civic Si tranny

I suggest you to rebuild the motor if you can, also balance and clean all the used injectors while you there.

 

Thanks man i might just do that don't seem like there is to much to it. bmanuhutu do you have to to change the whole harness all the way pass the firewallor just use the reg clip by the hood??

 

You don't change the harness. You have to modify the DX harness thats on the car now to MPFI. Go to the FAQ and READ the (*DX,STD (DPFI) -> Si,HX (MPFI) wiring). Then if you still have question come back and ask them.

If you don't think there is much to it, then you should be able to read the FAQ and just do it.