radicaled434

i already tore apart my car, bought a b20 motor, ek b16 auto trans with mounts on it, and everything for an auto swap except the ecu, ive been told its not likely its goin to work, i was wondering if anyone has attempted this and succeeded and how?

zeplin

I've never heard of anyone doing a standard to auto swap. But I suppose if you did just the opposite of an auto > manual swap it would work. So long as you changed everything else there's no reason it shouldn't work.

egb16pg

its not going to work.

unless you have an edm/austrailian chasis.


take my word and trust me.

egb16pg

i believe you would have to cut majorly into your cross member or something like that. look into it.

radicaled434

the frame rail

zeplin

I was unaware you had to cut any of the frame, but I can tell you that's not something you want to do. Why not just buy an auto car and put the engine/tranny in that then? I'm puzzled why you'd want to swap a standard to automatic.

saywhat

/\ This is misinformation, if a standard trans swap can fit, an auto trans swap can fit, just run a chipped OBDI Auto LS ECU with B20 fuel maps.

ifIexplode

No no no. For an Auto B series swap to fit youre going to have to notch the frame Rail.
An automatic tranmission is considerably larger than a standard transmission. It wont fit.

98civdx

im confused why you want to switch an 5spd to a auto???
yes you can do it
its just the opposite on converting a auto to 5psd i guess?

drave

But 97 ex's come in automatic as well. Are you saying that every chassis with an automatic transmission will have an OEM notch in the frame rail?

ifIexplode

No im saying a Bseries automatic set up is larger than a Bseries standard setup.


If B18C5-EH2 is around somewhere he could fill you in. I believe he has done it and has numerous reasons why its a bad idea, Including having to notch the frame rail. There was a thread quite awhile ago about this.

saywhat

I can't find anything definitive in my searches, I have never done an auto swap, but I would have imagined it would fit, but I am sure I will be proven wrong in a few minutes.

RoadRage212

I was going to do this in my 98. Mine is an auto as well and I was going to swap in an automatic B20 and be done. I was working with a shop to find out what parts I need and we both hit a road block when it came to mounts. Nobody makes an automatic b series mount kit for our cars. Its the brackets. Custom ones would blow my budget into the next century, so I'm doing the manual swap with an Ls-Vtec motor.

Edit: I've never heard of the 'frame notching' thing so that may be a completely different problem. Not worth it IMO.

ifIexplode

That was my next concern for the possibility of this swap.
Nothings impossible though.

94EG8

No it isn't

It doesn't, the automatic B-series transmission case is considerably larger, the manual version starts out large at the bell housing and then goes into sort of a funnel shape, this is what allows it to clear the frame rail, the automatic stays big.

Again, its it doesn't work. You need the integra TCM as well, which is around 40 wires to run, the LS TCU also wont have the correct shift points for the automatic B16 tranny.

To the OP, this just isn't going to happen.

ifIexplode

Exactly. Thank you.

thumper64

Isn't there a B to D adapter plate? Would that be a option?

94EG8

No, there is absolutely no difference at all as a matter of fact between USDM 6th gen auto and manual chassis. The countries that got B-series engines in EKs have different frame rails and/or cross member. the Automatic D-series fits because its smaller, and IIRC even its a pretty tight fit.

Unseen Racer

trust 94EG8.

and no i wont work. like 94eg8 said, the auto trans is longer.

WOW! radicaled434 is getting a WHOLE bunch of different answers

94EG8

you'll still have an ECU issue, unless you use a chipped OBD1 ECU, and you have to space the flywheel out when using an adapter plate, I have no idea how or if that will work with a flexplate. And, when its all said and done I don't see a D-series automatic lasting very long mated to a B20.

radicaled434

shoulda mentioned the car is already an automatic and its gonna be a daily driver

ifIexplode

It makes no difference.

raidacaipo

it should work. I mean I seen people convert from automatic to manual so why not vice versa? just hope that the civic chasis is automatic and that it comes with an automatic engine harness. then reuse that civic engine harness and retro fit it to the b20 motor. your gonna have to use an automatic ls ecu or you can use a crv ecu. As for the tranny part I beleive you can use any civic b16 automatic tranny but I dont think there is such a thing as a b16 automatic tranny. Now I know there are b18 automatic trannys out there but I dont know if it will fit the civic as well as a manual tranny. mainly it would have something to do with the motor mounts??

ifIexplode

Why even post?
Did you read anything above?
Obviously not.


Holy ****.

raidacaipo

Thanks for being a a hole.. your really friendly. First of all I only read the question for what the op posted so I dont have time in the world to sit and read read 5 pages. second if I offended you by not reading your posts then im sorry if you wanted attention but please dont be an a hole.