Mr. Brat Posted February 13, 2010 Share Posted February 13, 2010 I have done some searching and haven't found anyone that has done this swap and did somewhat of a write on it. The motor that I got I couldn't pass the deal on. It has all the smog junk on it (for now). But fabing everything up is not the problem. I am mostly looking fot the wiring. Is this the same as the swaps into the EA82's? I also read somewhere which I cant find again and the ECU needs a wire from the ABS. If this being true what wire do I need to find/run to the ECU? Does anyone have a schematic of the wiring that I could cheat off of? Or if someone that has done the swap live down in the lower puget sound give me a little help? I always have beer! Link to comment Share on other sites More sharing options...
Jibs Posted February 13, 2010 Share Posted February 13, 2010 What year ea81 brat? If its a gen 2 (82+) then yeah, the swap is basically the same, I believe you need the wiring to match the engine, but I recall that someone used a 1.8 with the 2.2 harness or vice versa. Otherwise, just read numbchux's writeup and have a go. Link to comment Share on other sites More sharing options...
Mr. Brat Posted February 14, 2010 Author Share Posted February 14, 2010 Yeah its a Gen 2, I was lookin at the junk yard today and noticed that there was a few differances in the harnesses (between my 1.8 and harness and the 2.2 and harness). But for the most part I would assume that they would be the same. The other thing is that when I get the motor the harnesses were also takin out of the car. Thus meaning I have no idea what does where. I have all the stuff plugged into the motor. Does anything need to be connected the the ABS? Or does the ECU need a signal from the ABS? I do remember reading that someone used a 2.2 harness on a 1.8 and it was in a EA81, but there was no info on how it was ran or wired up. Link to comment Share on other sites More sharing options...
Mr. Brat Posted February 14, 2010 Author Share Posted February 14, 2010 So I printed off Numbchux write on the EJ swap, first bump in the road. Dont know if its the differance between 1.8 and 2.2 or maybe a cali motor. Anyways in his swap at the ECU he says there is 4 yellow connectors. My ECU has 3 green connectors. And without removing the harness, I am at a stand still. I have already takin out all the headlight and turn siganl wires. There was an ABS plug that went to the pass. front that I am guessing plugged into the ABS system that sits behind the headlight, do I need this also? Link to comment Share on other sites More sharing options...
s'ko Posted February 14, 2010 Share Posted February 14, 2010 The main difference electronically between the EJ18 and the EJ22 is that there is no knock sensor on the EJ18. The first thing you will need to get is a copy of the wiring diagram for the EJ18. The wires coming from the 3 green connectors will make sense once you get the diagram. You will not need the majority of the wires from the donor. If you take the entire harness out, you will probably only use about a quarter of the wires. The goal is to take all over the wires associated with the engine and trim away the rest. The engine does not need a signal from the ABS. My EJ18 BRAT also did not have to clutch wire connected. Send me a PM w/you e-mail and I will see if I can find the info that you need. BW Link to comment Share on other sites More sharing options...
Mr. Brat Posted February 14, 2010 Author Share Posted February 14, 2010 PM sent S'ko Link to comment Share on other sites More sharing options...
Gloyale Posted February 16, 2010 Share Posted February 16, 2010 Or does the ECU need a signal from the ABS? I do remember reading that someone used a 2.2 harness on a 1.8 and it was in a EA81, but there was no info on how it was ran or wired up. Might have been my rig. I am running an EJ18. However my harness and all engine management(intake, ECU, MAF, transistor, etc....) are all from an OBD-I legacy. I installed a Knock sensor onto the EJ18 block. EJ22 intake bolts right on. Only real trick was making a plug for the EGR hole in the EJ18 head. I used a fitting from an EA82 EGR , cut the tube and hammered it closed, then soldered. Screws right into the EJ18 as a plug. All done more or less according to NumChux writeup Link to comment Share on other sites More sharing options...
Mr. Brat Posted February 16, 2010 Author Share Posted February 16, 2010 Well for now I will try and get it pretty close and see where I get with the wiring. The intake, ECU and the harness should be the only thing that is differant from the 1.8 right? The throttle body and MAF should be the same. As for the smog sensors in the intake I was going to try and find out what voltage is sent back to the ECU and then duplicate that via resistors. Only problem with that would be if the voltage changes via fuel or vaccum. Dont know about that yet nor have looked into it. Should I quit while I am somewhat ahead and go to the junk yard and get an intake harness and ECU out of a OBD 1 legacy? Link to comment Share on other sites More sharing options...
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