Okay I just bought a 99 civic lx(4dr) couple of weeks ago. Couple of days after I bought the car it started throwing some cel. Anyway I decided to swap it with an automatic b16a3(obd2) engine. Just looking for something a little bit more decent then the D seriers since I'll be buying a jdm engine and shipping is already an s kicker I thought why not go B.

I already have a 5spd 96 ek hatch with a gsr swap and I am pretty well educated on 5spd swaps, but I have never done any automatic D to B seriers swap. Any help would be great.

My questions are
what engine mounts will I have to use since its an auto?
I'm guessing auto gs-r or ls axles will work?
What about the shifter cable?
Anything I should or need to know about the swap?

Keep in mind I'm not looking for this thing to be a race car, just an automatic daily driven car with more then a everyday D seriers.

 

I wont tell you it can't be done, but its nowhere near the drop in affair a 5 speed B-series swap is. You'll have to fab up an upper transmission mount on your own, no OEM mount works and no aftermarket mount is available. You also have to cut and notch the passenger's side frame rail. There is no rear mount or T-bracket for this swap so you'll need to fab up a bracket as well. Then you'll have to try to figure out how to control the automatic B-series tranny, generally they have seperate TCM (OBD1 B16As don't, but as far as I know all others do) that the Civic lacks, theres around 40 wires that need to be run from the ECU and transmission to the TCM.

The best advice I can give you is do not do this swap. Find a 5 speed B-series tranny and other associated 5 speed swap components and swap the car to a 5 speed, its considerably easier than trying to keep it an automatic.

 

Thanks alot for the advice. I guess I'll stick with the D sereirs then.

 

You're welcome. Its really not much extra work to swap to a 5 speed though if you're pulling the engine anyway.

 

i disagree. change out the sub frame to an eg (92-95 civic) use the auto mount off a dc4(94-01 integra) that way you can use an auto ls trans mount.

this should cure all of your problems.

 

That would cure one of a bunch of problems, still doesn't help you one bit for upper transmission mount, clearance issues or wiring issues.

 

how many swaps have you guys done (not insulting you but seriously)? a b18 harness out of an integra will work(whether your running obd2a or b, obd1 or obd0 and yes you will need a vtec controler because i have never seen a gsr automatic stock and you will need the ecu harness that runs fom engine harness to ecu), you use a stock auto mount out of an ls for the mount, the point of the eg frame is to alllow clearance and to use all the parts available on the ls integra. yes, they will bolt up ONCE you change the subframe otherwise you would have to buy an ek back tans mount if they made them.... which is all aftermarket.

so once you change out the sub frame you can** (and strictly for the b16 auto conversion)
Use integra rear trans mounts
use integra upper trans mounts
use integra wiring and computer PLUS vtec controller
use integra axels

bump... yes i just did that out of habbit

 

if anyone is having problems imagining.. suppose it were a basic ls automatic swap.. how easy would that be? then just wire for vtec..

 

yea i dont get how that would fix his problem. He has like 5 problems and that would solve 1.

@OP Honda makes **** automatics that shift slow, dont hold power and generally suck all around. So there would be no point in wasting money on a B swap just for automatic. If you want an auto daily driven car with some power, buy a V6 accord, or dont buy a Honda.

 

he has a problem with a with automatic in mind, if oyu cant help fix the problem go flame elsewhere. and yes, my previous post explains everything quite detialed.

 

im not flaming anything until now. YOu are apparently stupid. Because your whole answer solves no problems. If you think it solves all the problems then why dont you explain it in detail. Instead of " change out the sub frame to an eg (92-95 civic) use the auto mount off a dc4(94-01 integra)", because that solves all the mount problems and wiring problems, right?

Also the OP doesn't necessarily have a problem with "automatic in mind", it is something that he was considering doing and asking questions about. Maybe if you could read then we wouldn't be having this conversation.

 

Quite a few, and several more straight engine replacements.

Integras use a 2 piece harness design, '96 - '00 Civics are one piece, they aren't in any way compatible with one another.

Automatic P72s exist, they are JDM only and came in the SiR-G

As far as I can tell you can't bolt up a EG/DC subframe to an EK, but even if you can it still only helps with the rear T-bracket

You could get JDM and EDM 6th gen civics with a B16A, so the rear mount and T-bracket exists, but there were also other chassis differences that allowed enough clearance for the automatic tranny.

If you can bolt up an Integra subframe yes.

Nope, EG/DC use the same type of upper mount, EKs are completely different, they have a rubber mount bolted to the passenger's side frame rail and metal bracket bolted to the top of the transmission, the exact opposite of how the EG/DCs are setup.

Again, you can't use an Integra harness in a 6th gen civic.

That you can do.

You can say what you want, but what you've said just proves to me you don't know what you're talking about.

 

holy ****, very nice.

 

How easy would that be? Why don't you take a peek at this thread and tell me. --> https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/honda-gsr-swap-getting-pita-2364737/

I'm really not trying to be a dick, but I don't think you're fully aware of what this swap entails.

 

I tried this swap before, I basically had the engine swap in till I got to the passenger side upper tranny mount,, then I gave up and yanked everything back out, lol,, but yeah, you can use teggy auto rear bracket, jdm p72 automatic ecu. I was putting this in a 94 civic lx though. I could have finished up the swap but didnt like the idea of hacking a passenger side upper mount... I dont see how there would be a clearance issue, cause B swaps drops right into the eg with no prob. I dont see how a different trans would cause clearance issue.

 

You can use the rear T-bracket off an automatic 'teg on an EG, the EK needs a shorter bracket though (same reason you need to use a '99 - '00 Si rear T-bracket on a 5 speed B-series swap in an EK and not one from a 5 speed Integra/Del Sol Vtec)

The clearance issue has to do with the manual transmission being shaped like a funnel, the end of the case actually goes under the passenger's side frame rail. The automatic while being more or less the same length is about the same diameter on either end, so that it won't clear the passenger's side frame rail. You actually can do an automatic B-series swap in an EG, I wouldn't recomend it, but its considerably easier than doing it in an EK.

 

if you want an auto b series get an integra

 

To start, you dont interchange harnesses, you use the integra harness complete to engine from ecu, no mixmatching. you can use a b16 harness but no auto harnesses are widely available (i know you will argue the sir-g **NOT widely available as they are rare JDM**) like the integra harness. and yes they do work.


not everyone can be as knowledgeable as you,. as i said, i have never SEEN one just simply saying that those are super rare in japan, wrather less in the U.S.


this allows proper clearance to use the rear t bracket AND the upper trans auto mount from the ls integra auto. allows for proper clearance and mounting. they do bolt up...


no auto transmission is available with the b16a in the us, so yet again rare parts even in japan.



this is on hold... it seems i will need photo proof.

yes you can, you just have to use the whole harness out of an integra, no dicing the harness to try and work.


i have seen single cam harnesses on ls motors from home grown builds, which you wouldnt even think possible... yest again flaming and closed minded.

 

what xero xero said is correct.. i have done it before and it worked fine. i just used and auto ek engine harness and got the computer chip to match characteristic of how an auto would run and drive. the eg subframe allows for the auto swap to be dropped in, and of course u would use the auto integra t-bracket and the tranny mount, and as to shifting, i just had a homie chip a computer, i never had any complants from the guy.

 

You do realize that the Interior side of the Integra harness going to the ECU is also the underdash harness right? No matter how you slice it you're gonna be doing a shiatload of wiring trying to use an Integra harness in a 5th gen civic.

The SiR-G harness would be even worse anyway, it was the Japanese version of the GS-R, it just creates an even bigger problem, no only do you have a harness that doesn't work, but its flipped around backwards too. About the only thing that would make sense is using an automatic EK4 harness (and yes they are rare, i'll give you that, they aren't JDM only though, they were available in europe) and flipping it around

I get the subframe allowing you to use the Integra rear T-bracket, but you cannot use an Integra upper transmission mount on an EK, auto to or manual, UNLESS you weld an Integra pocket mount on the EK frame rail.

If you call up a JDM importer they can still probably get one for you, they might be rare, but there pretty much no demand for parts to do automatic B-series swaps.

You're still forgetting about things like gauges (you can repin connectors for the guage cluster, but I suspect there still other connectors that will need to be swapped.

I wouldn't call it closed minded, sure you can drop an automatic B-series in an EK with enough time and effort, that wasn't my point, my point was that amount of work involved makes it pretty impractical when you compare it to swapping the chassis to a 5 speed.

And just for the record i've always used SOHC harnesses when doing B-series swaps.