using b16a parts on b18c7

**vrmmmpshhh** · 06-09-2015 07:26 AM

hi guys im about to purchase a rebuilt b18c7 that only has the intake manifold and timing belt and a P73 (obd2a) ecu. will everything from my 92 b16a2 transfer over including the b16 engine loom which is also obd2a. things such as vtec solenoid, dizzy, aircon etc. i think the b16 headers might be too short. any help would be appreciated

**Super-DA9** · 06-09-2015 11:18 AM

The wiring should be plug and play I would think, provided it's definitely OBD2. You will need a B18C header, throttle body, intake and if you're using the stock exhaust on your (I'm assuming) civic(?) you may want to think about using a larger diameter system.

There might be a few other bits and pieces I can't think of right now.. But if you're currently running with a B16A2 OBD2 system then it should be pretty straight forward.

**cbauto** · 06-09-2015 07:04 PM

You must spread some Reputation around before giving it to Tun again.

**ECU-MAN** · 06-09-2015 08:33 PM

VTEC Solenoid, Dizzy and AC compressor will fit.

**vrmmmpshhh** · 06-09-2015 11:29 PM

ok i made the mistake of thinking my del sol is a obd2a when it is infact obd1. so my problem is i have a bare bones b18c7 with obd2a ecu. i think i will transfer everything that i can over and run-in the rebuilt c7 with the b16a ecu until i find something that will run it.

**Super-DA9** · 07-09-2015 08:59 AM

Originally Posted by vrmmmpshhh

ok i made the mistake of thinking my del sol is a obd2a when it is infact obd1. so my problem is i have a bare bones b18c7 with obd2a ecu. i think i will transfer everything that i can over and run-in the rebuilt c7 with the b16a ecu until i find something that will run it.

I wouldn't recommend using a B16 ECU on a B18C... Was the engine built with high performance parts or OEM bits? If it's built differently to stock you'll need it tuned regardless. In which case you should get it run-in and tuned on a dyno straight off the bat.

**vrmmmpshhh** · 07-09-2015 09:30 AM

It's rebuilt with just stock parts.

Been doing a huge amount of research for this. On one U.S. Site it says that although the engine loom has to be specific for the dizzy, alternator etc. the cabin loom side of the engine harness is backwards compatible??? I can use a obd1 engine harness but use a obd2a harness from the strut towers to the ecu and use a obd2a ecu. Can anyone confirm this is true with the Aussie engines?

**ECU-MAN** · 07-09-2015 09:41 AM

You can use the OBDI engine harness and connect it to the OBDIIA cabin harness. OBDIIA ECU will then run fine assuming you have delt with the immobiliser

Do not use a B16A ECU it will run the engine lean. Lean mixtures damage engines

DelSol OBDI engine harness may differ from Integra B18C2 Engine harness, check the MAP sensor location.

**vrmmmpshhh** · 07-09-2015 10:50 AM

Thanks for the info. I won't need to use my b16a now that I know the obd2a cabin loom can be used. If the ecu is an Aus spec with immobiliser it looks like I'll be off to your place to get rid of it.