ok well i obviously know very little about cars.

i have a 2000 civic ex... and the motor blew. so im swapping in a b-series engine.

when i bought the motor, i was told it was a b16a2 block with a 01 gsr head, so i been buying all the parts i need for obd2b swap...

but someone told me i have a 95 gsr head not a 01...

so... what problems am i gonna run into now...? i have my stock obd2b ex harness i was planning on using... and also bought a 00 p72 obd2b gsr ecu... am i not gonna beable to use these?

what other problems am i gonna run into... sigh...

 

shouldnt have any problems, just buy whatever dist you need obd2 or obd1 for the gsr and other then that all the same sensors on both the early ones and the late ones. all the cly heads are very close to being exactly the same

 

The year of the head will not matter!

What may be an issue is the style of intake manifold the head has. If it is a GSR manifold, you will need a different ecu to control the opening of the dual runners

 

Wait dual runners? Is that the same thing as butterflys or something?
I has gsr intake manifold, I was told I should get a gsr ecu so it had the capibility to use the "butterfly" in the intake manifold. So I bought a 2000 gsr ecu that would fit my harness.

Unless dual runners is something different. I mean I just need a car to drive, doesn't need to be a 12 sec car..

So I'm guessing Ima need a obd2b vtec dizzy? Am I correct?

 

Well, you have a P72 ecu, so that's good. It may run a little rich being it's for the larger 1.8L engine. Also, if you have a 2000 model P72 ecu, it has the factory immobilizer which you will have to disable.

Any OBDI or OBDII b series vtec dizzy will work, but the plugs on the OBDII will plug right in

The butterflies are for the factory dual runner setup...personally i don't like it at all, and would just get an aftermarket manifold

 

yes, gsr has secondary iabs (butterflys)

 

how hard is it to immobilizer? and how would i go about doing that? anyone know?

 

hmmm well i just searched, looks like id either have to find someone on h-t that knows how to disable immobilizer or a shop that knows how.. plus i will HAVE to have my CEL on everytime i start the car...

so i might have to go a diff route since i hate CEL lights..
i guess my options are...?

1. keep the obd1 dizzy and just buy a obd1 harness and ecu
2. keep the obd2b harness, buy the obd2 dizzy, buy obd1 ecu, buy obd2b-obd1 harness converter.

so im guessin just buyin new harness and ecu would be best since obd1 can be chipped and hondata'd anyways?

 

Bumpp

 

Nope. Your 2000 ex has a harness that is a 1-piece design. The OBD1 harness is a 2-piece design that splits at the shock towers. You'll encounter a total wiring nightmare if you try to mate the OBD1 engine harness to your chassis harness. The best thing to do is to keep the existing harness and go from there.

 

Pm katman, he has a way to get the imobolizer off without haveing a cel.
If you have been getting obd2b parts, just get everything you need and it will plug into the ex harness. With exception of the iabs, but just get a aftermarket manifold if you can afford it.

AS said, you cant use a dc harness without a hell of a lot of wireing and big time headache.

 

anyways im in the process of trying to get the immoblizer off.

now im trying to get everything on now. and getting confused the *** outta
now that i look at the distributor. i think i might already have the obd2 distributor.



that is obd2 correct?

how come i none of my harness connectors connect to it?
the distributor connect on my harness looks like this..?

 

The single dizzy plug is obd2, obd2b or a i have no idea.
Obd1 is a 2 plug design.

Are you sure you have a obd2b dizzy?

 

i wanna believe its obd2a dizzy, but im not sure.. cuz im new to this haha guess i gotta go searching for obd2b dizzy

 

Just keep the distributor and such that you have. If you can make the ECU work, great. Otherwise, get a OBD1 ECU and get it chipped and have someone tune it or at least burn a base map for it. Simply scaling a GSR map down for a 1.6 liter motor should be fairly close.