This is my very first swap and i've ran into a few issues so far i was hoping for some pointers on. I have a 92 acura integra ls with a b18a1 that i just pulled out. I picked up a 90 civic hatch that slid into a telephone pole for a few hundred bucks. It has a b20b and ys1 gsr transmission and was very well kept. It ran like a beast in the civic but obviously my teg has a much nicer body so i figured i'd swap. So far the problems i have ran into are as follows. Once i got the b20 in the teg the drivers side motor mount wouldn't line up. I fixed this problem by pulling the motor mount bracket of the b18 block and putting on the b20 then using the mount from the teg. The next problem which is one of the biggest so far is 98% of my wiring doesn't match up in the teg now. most of the connectors are on the opposite side of the car from what i can tell and won't reach far enough to plug into anything properly. Do i need to swap wiring harnesses from something else and if so what? Or what is another easy fix to get everything plugged in properly? The next issue i've noticed so far is the header from the b20 won't fit as the bar below the radiator in the teg (cross member if im correct maybe) is in the way of the pipe, i had to pull it off in order to get the motor into the car and there's not enough room between the engine and that bar for the pipe to come up through, obviously i'll have to use another header and i'm assuming the one off the b18 will fit for the time being until i can pickup a nicer one am i right? also do i need to swap the computer out of the civic as well? someone told me since i'm changing motors i need to pull the computer out of the civic and put in the integra as well? Another big problem i ran into was getting the b**** pin out of the tranny in the civic so i just took the bolt out of the shift linkage cable for the time being and meant to knock the b**** pin out while the motor was out of the car...lol i forgot until it was bolted into the integra, and i obviously don't have a special tool to remove it, so i still need to knock that out so the cable in the teg will hook into the new tranny because the cable in the teg does NOT have a bolt i can take out like the civic did. Any advice on an easy diy method to remove the b**** pin without a special punch? Also i realized the drivers side axle is different on the teg as well, as one end has a male tip and the other a female, that i fixed by building a custom axle out of 2 as a buddy at autozone suggested. That's about the extent of my swap progress so far as i'm stuck on the wiring issue for the time being as well as the computer question. Thanks in advance for any help and tips and is there anything i did not mention that i might also run into as i progress? I would ultimately like to have the teg up and fully running within the next 2 days as i've already been without wheels for about 5-6 days now and i have the next 2 days off work to get this finished. Thanks again and sorry for the book This is my first swap and i'm egar to get the b20 up and running fully in the teg.

 

breaking it up would help

why are you using anything other than your stock teg wiring harness. from your stock b18 harness 98% should plug onto the b20 no problem, the only things that may not are the distributor, injectors, and alternator so just swap over from your b18. correct your b18 header will fit on the b20. ahh yes the bitch pin,the bolt from the stabilizer arm should work, just be kind of careful. 90-93 teg has both sides male while 94-01 teg has male/female, its to match the intermediate shaft which is also the opposite between your teg and civic.

the ecu(computer) we need your help,are the ecu connectors the same on both ecu's? ideally youd want to run the civic one

 

With the stock wiring harness from the teg, i ended up changing the alternator and injectors today, also had to change the throttle cable as the one in the teg was not setup right. the distributor wired up fine however. Now i have the issue of not being able to find the sensor for the tps. Also managed to get the bitch pin out as well, i ended up finding an alan wrench that was bigger then the pin but smaller then the hole, grinding it off to a couple inches and placing it on a steal plate i had sitting on the jack and just jack it up through the hole, came out like nothing. Mostly i just need to figure out what to do about not being able to find a plug for the tps, figuring out the power steering stuff as there was no power steering on the b20 but the teg was equiped, then figuring out where some of the vacume hoses i have go as the b18 had 3 spots on the throttle body for vaccumes and the b20 only has 1....any help with these few things would be greatly appreciated as i'm hoping the car is drivable by the end of the day tomorrow I haven't got around to checking the ecu's yet, that will come tomorrow after i get everything else figured out and fluids put in and prepped for the first start as far as i know though the connectors as the same just from a quick glimpse in the dark before coming inside tonight.

 

isnt the tps sensor on the back of the throttle body.
you might have the tps plugged into the map sensor on top of the throttle body as you mightve mistaken it. the map sensor's plug is on the firewall and needs to be transfered to the map sensor on the tb, there goes the need for one vacuum hose. im forget about the other 2, a picture would help.

it would be smart to check out the ecu now

 

how did you manage to find that setup?

 

Very interesting setup... To be out of the Honda world a while and come back and see what people are doing now is awesome

 

OK sorry i haven't been around for awhile, my net had some issues and it took almost 2 weeks to get a damn tech to come to the house and fix it lol. Anyways back on subject, i got the car running finally, the ecu in the integra was a pr4 and the civic had a p28 which is now what i'm running in the teg after the swap. Finally got the map sensor plug and everything else figured out and taken care of. Now i have recently (last night) ran into a new problem. I shouldn't have messed with anything since the car was running fine, but i decided i wanted to go back to the original injectors that came in the b20 as they were almost brand new and i read in a forum that you could simply cut the injector plugs off your wiring harness, and splice/solder the proper plug for your prefered injector onto it. So i cut the injector plugs off the civic wiring harness and one at a time spliced and soldered into my teg wiring harness to make sure it had a good connection then taped it up nicely, swapped back to the b20 original injectors and put everything back together. Now the car will start but it runs like total crap, it has a disgusting sounding idle, and even flooring the gas it will not rev above about 3200 rpms. I checked all wires to make sure i had a good solid connection and i do. Then i let it set and idle for a few and started unplugging injectors 1 at a time. 3/4 injectors i unplugged caused no change in the way the car idles. However 1 specific injector every single time i unplug it instantly kills the motor. No idea what that means or what the problem is, but the car obviously can't be driven like this and i've been searching forums for hours tonight trying to figure out what the problem is. Any help would be wonderful as after i've dumped several hundred bucks into this motor/tranny swap and other body parts fenders ect. i'm running extremely low on funds so i can't really pay a mechanic to come take a look at it for me, when i'm sure it's probably just something stupid. Yes before anyone asks i made sure when splicing in the new plugs the wire colors matched up to the ones on my wiring harness perfectly as they do. i can't remember without going out to look but i'm pretty sure there's yellow/yellow with black stripe, yellow/blue, yellow/red, and yellow/brown all of which have the same color wires on the new plugs i spliced in and i made sure to splice the proper wires in the right spots. Thanks in advance and once i finally get this issue fixed and finish some minor body work i'll get some pics of the before/during/after swap posted somewhere as i'm quite pleased so far.