Hey guys.
I'm in the process of dropping the engine in my 98 CR-V after the timing belt slipped and bent some valves. I'm still fairly new to the Honda world so I need some advice. I've searched quite a bit but haven't found a solid answer.
I'm in the process of scouting out a B20B4 or B20 low compression to replace the motor, but I'm wondering if I can instead use a B20Z2 or B20 high compression from a 99+ CR-V for a bit more power.
I know it will mount up nice and easy, and I'll probably have to the belt/water pump/crank position sensor/oil pump either way but will I need a harness or ECU from a 99+ CR-V to make this work properly? Anything else I should know?

 

You don't need the 99-01 ECU but it probably will help with gaining the most power due to different timing/fuel maps designed for the Z motor. If you use that ECU you will have to do an adapter to OBD2B and add wiring for a knock sensor as the B engine doesn't have one. Honestly I'd just reuse your ECU and call it a day.

 

Great response, thanks. Does the Z engine have a knock sensor? If I reused the stock harness and ECU, how would a knock sensor be included if there is one?

 

Yeah the z does have one. You'd just need to wire it to the ECU. You wouldn't need to if you reused your old ECU.