Im helping a buddy with a swap and im kinda confused on the wiring. He has a 98 civic with a d16y8. We are putting in a d15b vtec. The car is obd2 the engine is obd1 (I believe, it only has one vtec valve ). If I use the wiring harness and ECU from the y8 and just plug it into the d15b would everything be right or do I have to use the y8 dizzy and everything on the b15b? i have never went from obd2 to obd1

 

use the distributor and injectors and harness for the original car the rest should be fine except the crank senor (i think) whats a vtec valve? are you referring to the vtec solenoid? all vtec hondas only have 1. it would be even better if you swith the manifolds which is what i reccomend use the original intake manifold so basically just do a head block swap.

 

Yes, I mean solenoid. And I am almost positive the 3-stage vtec one has two of them. I probable will just use the same manifold then. Thanks for the reply.

 

What about the crank sensor? Do I have to swap oil pumps or is there a way around this?

 

Ok, I found the trick around the crank sensor. So now my only question is aren’t the obd1 and obd2 dizzy plugs different. These look the exact same.

 

the obd1 has 2 plugs the obd2 has 1 big one

 

You can't. It physically wont bolt up.

92 - '95 non vtec D-series and all '96 - '00 D-series distributors share a bolt pattern. '92 - '95 D-series Vtec and Vtec-e distributors use a different bolt pattern. You can swap the guts between the 2 distributors quite easily though.

 

there was an f series with dual stage and k series with 3 stage but not a d series with multiple stages.

 

There was, see link ---> http://asia.vtec.net/article/d15b/

 

Found out what’s going on, someone has changed the plug on the distributor and I didn’t notice, that’s what was confusing me. I got it straightened out now. Thanks for the help guys.