I have a 1990 Honda civic hatch with a usdm B16 obdo and I was wanting to upgrade to a B18C and use my B16 trans. What will I need to change out to the B18? new mounts? clutch? wiring? Any help would be great thanks!

 

you'll need to convert to obd1 and run an appropriate ecu. only mount you'll need to change is the driverside post mount from the b16 over to the b18c. wiring will remain unchanged for the most part. you may need to run the fan switch wires from the back of the block to the thermostat. i don't recall if the obd0 b16 has them there already or not. also, if by b18c you mean the jdm gsr then you will need to run some wires for the iab's (secondary butterflies). since the transmission isn't changing you can use the same clutch.

 

Awesome thanks!