Hello I have a 92 civic hatch,with a d15b8 motor,an I just got a 91dx hatch from someone with a d15b2 motor,I want to swap the motor from the 91 to the 92 because it has more power,the problem I am finding is the 91 is obd1 the 92 is obd2,I don't know if I need to swap the ecu along with the motor,and if I do is it able to clip right in to my current 92 harness,if not what is the most easy way to do it without having to change my harness,And is there any way to make the car obd1 with the motor swap,because I hear obd1is better,or as a side not is it possible to make a mini me for Thessalonians two motors and how would I do it,any info would be a huge help and very much appreciated,

 

Swap over the intake and exhaust manifolds and distributor from the 92 to the 91 engine. Also swap over the timing belt mount from the 92 engine to the 91, the one that actually bolts to the block. Also you'll have to wire the fan switch from the thermostat location of the 92 to the back of the block location of the 91. Reuse the 92 ecu.

 

Even tho the 92 ecu is an 8 valve and the 91 is 16 I can still use the 92 ecu?and is it possible to run the 91 exhaust mani,because the one from the 92 has cracked,if I swap the distributor,will it also change my firing order and timing,

 

Even tho the 92 ecu is an 8 valve and the 91 is 16 I can still use the 92 ecu?and is it possible to run the 91 exhaust mani,because the one from the 92 has cracked,if I swap the distributor,will it also change my firing order and timing

 

Actually a better solution would be to run a DX ecu from 92-95 Civic the P07 but you will have to run the 240cc injectors (can be from pretty much any 92-95 Civic/Integra except the CX or VX). You can run the 91 exhaust manifold and no swapping the distributor will have the same timing and firing order.

 

If I run the P07 and the 240cc injectors,do I still need to change distributor,intake mani and timing gear,is the fact that the motor is obd0 and the ecu will be obd1 going to be a problem,sorry I am new to building motors and really new to Hondas,so if you could give me a full rundown of what my full swap will entail,mounts etc
Thank u very much man,everything it has been very useful

 

-P07 ECU
-240cc injectors
-reuse the 92 distributor
-swap over block mount, reuse all other 92 mounts
-swap over intake manifold from 92 (if you could find a d15b7 or z6 manifold and injectors it would help with performance)
-all other sensors will plug and play
-if you use the P07 you'll have to use a 4 wire 02 and wire up the 3 additional wire (this only applies if your cx has a one wire currently)
-use your old exhaust manifold if the cx one is damaged

 

Thanks a ton man I can do all of that an it will be fairly easy to get the parts,one last question tho about the four wire o2 where do the extra three wires need to be wired in at,about to start the rebuild this weekend,would it be ok if I pm if I have any questions or problems with the build thank u again man

 

 

i have just been reading about the po7 ecu and it's saying it's from a vtec motor,the d15b2 I have is a non vtec will it still work?sorry for all the qustions

 

Sorry typo P06

 

Is this wiring diagram still right for the ecu,if not can u point me In the right direction

 

Aslo I am seeing the p06. Comes in manual and automatic,is it going to be and issue that the d15b2 is coming from an automatic and going into a manual

 

And is there any benefit from me just ordering a chipped ecu,if so what basemap should I get,because I don't see one for my motor,

 

No one will make one for that engine as it uses dual point injection. I'd just use the stock p06. Also that diagram will work for the p06 as well. You'll need the manual version.

 

Right on man I'm set to go,that answers all my questions,thanks a ton,you have been an unbelievable help!