Hi all,

I have a '99 Civic Si that is in need of a motor. I am having a hard time finding an OBD2 B16 though. I was wondering if some of you who know more about this sort of thing would post some opinions of an OBD1 motor swap and opinions of an OBD2 B18c swap. I am just going to use the car as a driver and maybe for some autocrossing here and there.

Thanks so much for your help! I appreciate it!

 

in most states it's illegal to put an obd1 motor in an obd2 vehicle

something to do with inspection and emissions

 

It's illegal to do alot of things... LOL

You are right, it is illegal, and while it is not a problem for OBD-1 cars with Pre-obd or OBD-0 motors, it can be a major problem for OBD-2 cars...

I would say go with an OBD-2 GSR swap. You won't be disappointed.

 

what happened to the stock b16?

anyway, go with an obdII b18c1. you'll be glad you did.

 

I'm not too worried about emissions because here in Indiana, there is not any emissions testing.

I was mainly concerned about converting the wiring and sensors that the OBD2 has ans the OBD1 does not have. Does anyone know what exactly that would entail?

 

I think if you get a obd1 ecu (the appropriate one for whichever motor you will use) and the obd 2 to obd1 conversion harness, you can just plug in the sensors that you have and the plugs left unplugged will not throw check engine lights. Thats what I heard, someone else should confirm.

 

Can someone confirm this? I have heard something similar, but I don't know where to find one or if it is true that this harness will work without any check engine lights.

Thank you all for your responses!

 

just use your current distributor and all sensors and you're done other than swapping the stock mount from your car onto the motor.