I'm just looking for some advice before I do a swap on my GF's car she has a 99 civic SIR " canadian EK coupe same as american SI coupe". Anyways the car came with a stock USDM B16A2. As far as I know the only difference is the crank sensor plug at the oil pump for the engine wiring harness. The JDM B16A does not have the crank sensor at the oil pump for the engine wiring harness to plug into. The reason I ask is because I want to use my stock USDM P2T ECU and same engine wiring harness. Both engines are OBD2 also forgot to mention. As far as I know if I choose to get a OBD2 JDM B16A I would have to put a USDM oil pump on it for the crank sensor and so it plugs into my USDM P2T ECU and engine harness. I'm trying to keep the car basically a simple daily driver and stock for my Girlfriend. The old B16A2 is tired and burning oil but the cars in mint condition. I just want to know if this is correct from what I've read. If not please somebody correct me and tell me what I'm doing wrong before I get into this job. thank you cranker

 

Exchange the intake manifolds with each other.. You will need the USDM one for the jdm motor because it has all the emission sensors on them. You will also need to use the Vtec oil pressure switch from the usdm because the jdm motors do not have them and the usdm ecu looks for that sensor.

You can also bypass the oil pressure switch without having to get that oil pressure switch installed.

http://www.phearable.net/tech/wiring/vtpsbypass.gif

 

i don't think you have to do anything to the head, I believe you can just swap the vtec solenoid, since the usdm one is already tapped with the oil sensor

 

You are right my friend. I forget you can just unbolt it and reuse it. So OP do that instead. Just exchange vtec solenoids and I apologize for the error.

As you can see this is a jdm vtec solenoid. Notice that hole? that's where the vtec oil pressure switch is suppose to be for a usdm vtec solenoid



And this is a usdm vtec solenoid

 

Right on guys I appreciated your advice thanks 4 the help if you think about anything else I need to know please respond. Oh yeah you did'nt mention about the crank sensor and the oil pump I am right about that am I not??? I have to swap that around

 

The crank angle sensor bolts to the oil pump. If you have a jdm version with out it, and want to retain the original wiring, simply swap the oil pumps...and the sensor can remain in the same spot to do it's job

 

Also with the oil pump theres no gasket behind it right? you have to clean the surface and make one out of hondabond is this correct?

 

My '97 Del Sol originally had a B16A2 in it, the engine was shamelessly stolen, and I now have a JDM B16A. You'll want to check out this

http://technet.ff-squad.com/ckftrick.htm Because the USDM ECU looks for a CKF which the JDM B16A does not have.

 

Interesting post. I don't think i would start splicing my original harness to do that though. The OP has both parts already, so no additional cost is needed anyway, nor is splicing the harness.

Something to think about

 

I appreciate the wire trick looks somewhat ok but I was reading and alotta people seem to be still having problems. I think I'll leave the wiring alone and just put a USDM oil pump on. I hate fires LOL I hate wiring too. Thanks for the info though on the wire mod and saving me cash but I'm going to just replace the pump.

 

So far so good, its def a good idea to retain ur vtec oil pressure sender, it protects the motor by not going into vtec if enough oil pressure is not registering. Also why not just hone and put new rings in ur current motor. Id also have the valve seals replaced and maybe the stems. A lot cheaper than buying a whole new motor. The jdm has a .5 increase in compression

 

Its simpler 4 me to just plunk an engine in I find it easier and quicker than tearing an engine apart and getting machining done. Its too time consuming for me then you get into gaskets etc. shes payin I can get a JDM B16A off my local JDM dealer for a grand cash thats not much. Considering its a low K engine works for me. I would if I was going to build something but I just want a stock relaible B16

 

Make sure its at least obd2 otherwise if you get a obd1 motor, your going to have to exhange all your parts from the b16a2 such as obd2 injectors, dizzy, alternator etc.

 

Thanks man Ya I'm not planning on that at all extra work sucks then I have to get that jumper harness too. I'm not down with that I just want it to be stock, peppy, and not have to check the oil every other day LOL.

 

thats a valid point and I completely understand were u r coming from. Although U can do everything urself from honeing to changeing the valve seals (this is y ur burning oil) if u have the tools. Maybe not on the valve stems but have u done a compression test? U wont have any problems switching the stuff to make it obdII. U just run ur harness, inj, alt, vtec solenoid, dizzy, and ur oil pump and everythings good. Id take ur motor out then switch everything then put the new one back in.

 

Ya Im just going to set them side by side in the garage and swap everything over should'nt be that big a deal. Ive never changed the oil pump before I have torque specs and a civic manuel but theres not gasket behind the oil pump right you have to make one up with Hondabond?

 

do i smell free b16?

 

yep just a lil hondabond or whatever. The gasket is in the oil pump kinda like a cam seal with the lil circular spring in the circular rubber gasket

 

great thanks 4 the advice and help with this one I can't wait to get dirty

 

When I do a compression test on the new motor what should I get for readings across or as long as their similar across thats all Im after

 

for a stock b16 Id say at least 180psi all within 10% of each other, but i gurrantee that ur current motor will post great results. Dont forget to take out the ecu fuse and hold the throttle down when performing the test

 

Thanks 4 Letting me know I did'nt know that about the fuse.

 

i am in the same boat but its my car what was covered here has helped me alot my question is on the 3rd gen b16a obd2 the oil filter has a couple of sensors what r they for can u help i have a 00 civic si just had to send my first new motor back because found a rod bearing bad just wanted to know before the next one gets here please help if u can