1990 honda civic cx

ok i have a 1990 honda civic cx with a automatic tranny and a 1.5l motor my buddy just bought a 91 honda civic si with the 1.6l with a 5 speed tranny now he said i can buy it off of him the si is rotted right out but my car is in very good shape but my motor is blowing oil and i was wonder is it very hard to do the switch i know there is a bunch of wirering i have to do and i would have to cut a hole in the floor and i have all the parts i need off of the si but this would be the biggest job i ever done and i am just wondering if it would be hard to do and do you have any tips?

Cut a hole in your floor? Na man, this is an easy swap. D-series to d-series. The only thing you need to do is the mpfi wiring. Don't sweat it.

i beleive ha said automatic in there so you will need to loop 2 sets of 2 wires to get the key out and to make the car think its always in park. i just did auto to manual dpfi to mpfi in my buddies 4 door ef so lmk if you need any help. it would be better to pm me.

i beleive ha said automatic in there so you will need to loop 2 sets of 2 wires to get the key out and to make the car think its always in park. i just did auto to manual dpfi to mpfi in my buddies 4 door ef so lmk if you need any help. it would be better to pm me.

ok thanks i am not doing it right now cause its still a little bit chilly here to do that kind of work it wont be until it warms up but yea when i do finaly start working on it i will more then likly pm you thanks

you know what i would do if i was you..and it might sound like a PITA but it isnt all that bad if u got time..is switch over the whole exterior/interior wiring harness..and all components..only thing that could be a bitch is installing the clutch assembly..i never did any auto-manual conversion but it cant be all that bad..

ohhhhhhhhhhhhhh yess the clutch assembly. it sucks alot but what peopel dont do is drop the stearing column and it makes things so much easier. anyway. that is a good idea to swap the harnesses. i was originaly going to do this instead of wiring my old crx. but then 5 ebay harnesses later i decided i dident care and wired it up and it worked out great but since you have the complete matching harness i would just to it. swap it over.

ok i will keep that in mind who know i might be able to buy the whole car like the only reason my buddy bought the parts car is because he ran into a curb with the si he has now and bent the subframe to hell so he bought this parts car just to get the sub frame from it

ok i will keep that in mind who know i might be able to buy the whole car like the only reason my buddy bought the parts car is because he ran into a curb with the si he has now and bent the subframe to hell so he bought this parts car just to get the sub frame from it

Don't swap harnesses with an si, it won't match up to your interior harness and you'll create a big headache for yourself. Just to the mpfi wiring to your existing dx harness.