I was hoping someone here could help shed a little light on my search. I've looked around, and found people doing similar things to what Im looking to do, but the differences make me worry that those answers wont work for me. So here's my question:

I have a 91 integra that has sat for a number of years due rough idling and my engine bay becoming too much of a mess to efficiently troubleshoot. Im getting ready to start a resurrection project and I was considering swapping a B18b1 intake manifold / throttle body and the B18b1 engine harness onto my B18a engine to fix problems with vacuum line issues, and to replace my old damaged engine harness.

I know I can get / need OBD0 to OBD1 adapter for the distributor and alternator. Are there any other issues I need to look out for and can this be done?

Thanks in advance

 

Just to give a little bit better idea what my goal is, here is a bit broader picture of my plan. I want to rebuild the engine in my car, it got me to 250k miles and I dont think I want to do a full engine swap. My two biggest concerns are the engine harness which has become damaged over the years due to both my mistakes in my younger years, and wear and tear, and also the vacuum system on the 91 integras. I hate the mess of all the tubing and components the system uses, and I hate that a few small leaks can lead to hard to find operating problems. I know the 94 intake manifold uses a lot less vacuum tubing than the 91, but it uses more wiring than its predecessor. I am hoping that getting a Rywire harness for the B18b1, and pairing it with the intake manifold from the same engine will give me a cleaner looking, less cluttered, more reliable solution to both issues.

Am I being too hopefully here? Is there anything Im overlooking, or a better solution?

 

You have to use an OBD1 ECU with an OBD1 distributor. Also OBD0/1 alternators have the same plug.

 

Ok, so I would either need to swap in an OBD1 ECU and distributor to work with the harness, or us the stock ECU and distributor and use an OBD0/OBD1 adapter for the OBD0 distributor , and an OBD0/OBD1 jumper to plug the OBD0 ECU into the OBD1 harness correct?

Also would using the OBD1 harness with the B18b1 intake manifold make up for the extra vacuum lines on the B18a1 intake manifold?