tanas

Hi, I've done some searching through the forums, but still have some questions.

I've read that it is possilbe to hook up a T2 engine to an AT. I understand that the tranny needs to be a j-spec T2 tranny, cause it is the only auto kind. However I don't know if the engine needs to be j-spec. I would assume so, but need to now if I need to find a matching j-spec engine, or if I can use a US T2.

Second, and only minorly, I'm interested in learning about 20b's. It would be a project I would spend much time working up to. From what I can tell 20b's were last made in 1991. Is this so, if it is then a FC-20b is California street/emissions legal, and a FD-20b is not. As I live in CA these little things are important.

Please hit me back with answer. And no Auto flames, I do know the advantages of stick, but needs this info anyway.

-J

Black13B

iTrader: (1)

why do you want to make an automatic TII?

hIGGI

iTrader: (7)

US spec vs J spec engine mounting wise should not be problem, it will be more likely question of finding JSpec Auto ECU (if ECU has to do anything about auto-transmission, if not, then u should be fine with same series US spec 13BT)

20B's were made up to 95 if i am correct

http://members.rogers.com/sofronov/C...y/90Cosmo.html

http://www.mazda.com/history/rotary/g3-4.html

http://www.3rotor.com

ra ra rotory

"FC-20b is California street/emissions legal, and a FD-20b is not. As I live in CA these little things are important."

huh.... ?

I dont know how knowledable of rx7s you are... but... FC (86-91) only came with 13b's same with the FD(93-upward) 20b's (3-rotor) only came in a cosmo, which i believe wasnt even made in the usa, you can get 20b's for a few grand threw certain importers.

"I understand that the tranny needs to be a j-spec T2 tranny, cause it is the only auto kind. "

As far as I know.. turbo 2's were not made with an auto, none of them. but i could be wrong. And auto rx7s are extreamly slow unless they are like a drag car useing ratching shifters or whatever.... im not sure though.. just what i know

Rob500

I understand Mazda did make an automatic t2 convertible for distribution outside the US (obviously). I had an auto in my t2 vert for about a year. It definately was not slow. There were other issues. It's been changed out since.

Rob

tanas

ra ra rotary: I said FC-20b, and FD-20b meaning hybrid conversions. People can take a 20b and slap it in a FC or an FD. I know this is very expensive, but a guy can dream. The confusion is probably over the terminology I used. I don't know what to call an FC with a 20b engine, so I just called it a FC-20b. Same for the "FD-20b". Sorry for the confusion.

As for the Auto-T2, other people before me have posted about such things. I will find the references and post them later.

Thanks for the help hIGGI.

-J

Black13B

iTrader: (1)

well.. i dont see how the same engine in a different body has different emission ratings..

even if you put a 20b in a civic, it will still have the same emissions..

im sure you can get a 20b to pass if you do it properly in any body (FC or FD)

but personally i have never seen a 20b FD.. so i cant tell you it can be done as easily as an FC 20b swap..

tanas

Oh, almost forgot. Cali emissions laws say that a transplanted engine must be as new or newer than the car. In other words, a 1989 car/body with a 1991 engine is legal, but the reverse is not.

That might clear some things up.

-J

Black13B

iTrader: (1)

ahh ok i see what you mean now..

well.. thats a stupid law..

tanas

Black13B: The law makes some sense if you look at it not from the engine stand point, but from the car stand point. Basically you "probably" just put in a worse emissions rated engine. CA is getting strict on air pollution, because of all the smog. I still don't like the law, but I have to deal with it.

Here are some T2 Auto tranny posts that I read earlier:

https://www.rx7club.com/forum/showth...ight=auto+swap
https://www.rx7club.com/forum/showth...ight=auto+swap
https://www.rx7club.com/forum/showth...ight=auto+swap

-J

Icemark

There is no way in heck that you'll be able to get a 20B to legally pass CA emissions.

That same grandfather law (where you can put a newer motor in an older car) only allows engines that were sold standard or as an option in the car in CA.

Won't pass the visual and even with a custom exhaust with multiple cats I doubt that you'll ba able to get the emissions low enough.

Now the 13BT swap in shouldn't be an issue for emissions. Just get the underhood emissions sticker for what year motor you put in (and of course all the emissions equippment listed on that sticker) and it should be pretty easy to pass emissions.

tanas

Thanks Icemark. Well, so muc for the 20b idea. Oh well, guess I'll just ave to build a nasty engine instead of installing one.

-J

Icemark

Yeah, I put in a Jspec S4 13BT into my 'vert, and failed visual (but still passed emissions testing). So I got a sticker from an 89 and told the guy it was an 89 motor in my 88 'vert and it passed fine (the 89-91 didn't have an EGR valve that the 86-88 did).

Now whos gonna tell the guy that the didn't make turbo RX-7s as 'verts right??? He looked it up on the 'puter and it had either N/A or Turbo motor listed for the 88 RX-7.

steve's dog

PLEASE get rid of your auto tranmission instead of getting a new engine, come on man. im ashamed to drive a rx7 when i see automatic ones, they're so fake.....i mean, they role forward when you let off the break as idleing, how much more fake can a car get.

Black13B

iTrader: (1)

yeah "probably", which is stupid.. so i have a 1979 mercury 1.8L 4 cylinder. then i swap in a 1990 5.9L OHC v8. which will have better emissions you think?

no offense to you personally of course, i just think that a ridiculous law..