First things first:
-I've searched, searched, and searched today for several hours on h-t and google
-I'm disabled (paralyzed from chest down, technically a c6 quadriplegic) and have no option but to use an automatic

The car is an automatic 94 LS Integra. I'm wanting to put an OBD1 M24A B16 auto trans in. I have the LS auto out and sitting next to the B16 auto and there's notable differences. What do I need to get/do to make this swap legit, i.e. no check engine lights? Everything looks like a direct swap mechanically but there's definitely a difference in the wiring. There's an extra 3 sensors on my ls auto than the b16 auto.There are no emissions requirements to meet so there's no concern meeting any regulations.

There's several members that seem to know how this may work (94EG8 and Blown90hatcH) judging from what they've posted in other threads I searched out. I have pictures of each transmission and their differences for reference if anyone needs them.

Hopefully somebody has an answer. Thanks in advance!

 

Anybody? I'll post what info I've found lately, later today. There's gotta be someone else in here that knows....something.

 

contact Blundell, he's local to us in 'nati.

 

iirc, jdm b16 civic transmissions are controlled like a normal d series civic trans. which is why you're lacking the stuff that communicates with your transmission brain.

i think what you need is to try finding a trans, ecu, and brain from a obd1 jdm automatic sir-g or xsi integra (i think those are the trims). i believe there are some auto gsr's in america as well, but finding a usdm obd1 gsr is hard enough.. let alone an auto.

this isn't common stuff, doubt you're going to find much info besides doing the trial and error for yourself. i'd contact some of the more reputable importers (hmotorsonline, zero lift, etc) and see what they have. i've personally bought more than one long block b16 that has showed up with a flex plate, so there's a good chance that the trans is in america somewhere.

hopefully i've given you some ideas that'll lead to finding what you need. bricks will be shat when you tell people the story behind your swap and they see handicap plates!

 

Correct, at least in terms of OBD1 D-series.

B16A auto ECU, it doesn't use a TCM, the ECU controls the trans unlike all other B-series where there is a separate TCM (well except for the '00 - '01 Integra LS, but those have an immobilizer and they look for all those extra sensors)

There aren't. There also aren't any automatic Del Sol VTECs either.

IIRC the B16A trans is slightly shorter overall as well, so you may need to fab up some mounts too.

Also, remember when doing an automatic swap the engine, trans, and ECU/TCM all need to match to avoid a CEL or shifting issues since tuning isn't really an option.

 

Tried. He's a busy guy. For me to ask for a house call is a bit much imo.

Well, I have the b16 trans and bought it from Zerolift. If I had more time and didn't need my car, I'd be doing the trial and error approach. School is getting close though, and making sure my car is ready to roll, reliably, is more important. Originally, my buddy and I were going to just put the b16 auto in my Integra and see what would happen. That's when I discovered just how different my trans and the b16 were. If it was solely me wrenching on my car, I would've done the see-what-happens technique. But because a friend was doing the work, I didn't expect them to take my trans out, put the b16 in only to find out it won't work and have to undo everything again.

I don't have gimp plates yet, but I will next time I get tags. Using the blue handicap tag is annoying because it's easy to misplace. I've only had hand controls in it for 1.5 years so getting hc plates hasn't been a big priority yet...

Something I'm not understanding is why I'm not able to adapt a d series ecu to work. Then again, I'm a nOOb at dealing with ecu/tcm's, so pardon my ignorance.

I really hope the trans isn't any shorter, that'll suck. Hopefully I can find an OBD1 b16 auto ecu. Thus far I know of 3 b16 auto ecu's:

37820-p30-902
37820-p30-912
37820-p30-940

How do I tell it's OBD1 and an auto ecu?

Blown90hatcH replied to a pm I sent recently saying the only two ecu's I can use are the p30-902 and p30-912. The catch is running a b16 auto ecu is something will have to be done to make my motor compatible with a vtec ecu (preferably not ls/vtec because I want my car reliable). Here's what BlownhatcH said:

I'd love to find the real gear ratios of the b16 auto trans that we'd know was 100% correct. If you search it on google, you'll find a few different answers. So no one knows fo sho...

 

why is everyone telling me b16 trans are different? i know this..

now is when i get speculative:
why not search for a b18c auto trans. sir-g. use ecu, brain, trans, win.
asfaik, after chipping the obd1 b18c ecu, the trans operation stuff will remain operational.

 

It sort of will. You can't adjust the shift points is the problem, so if the gearing is significantly different between D and B-series it's going to shift really funky.

The 9 tells you it's a JDM automatic ECU, the plugs will tell you if it's OBD1 or not.



That would be about the easiest way to have something more or less just drop in with no major extra work involved.

You can't chip OBD1 Automatic P72 GS-R/SiR-G/Si Vtec ECUs because of the OBD2 style eprom, see pic below:

 

As far as I know, the b18c auto trans is the same as the ls auto.

Do the trans' shift based on pressures or rpm's or both? As long as the trans will shift at ~6900rpm (my rev limit), is the really an issue? Will not using the b16 auto ecu cause damage to the trans?

The tuner Mistabone mentioned figured out how to make the trans work in my car. He is going to use an auto p06 ecu, chipped to run my LS motor. There's two wires that need moved out of the tcm and into the p06 ecu. I'll post more when I know exactly what he i going to do. He (Blundel) also has a b16 auto in one of his cars with a similar setup and says it runs good.