Official Transmission Swap Information (Update 21/05/2010)

[Ryan]

Okay, I took some time out of my day and went to Mazda and copied all the gear ratios from all the relevant models.

I'll update the first post now

[nolig2278]

where can i find a flywheel that will fit a bpt with G series transmission?
a cheap one as i do not want to spend the funds for a light one?

advanced auto parts only lists the sohc flywheel.

Thanks

[grim760]

So my mx3's tranny is going out and the estimate I got for a rebuild was $1600 bucks. I can't seem to find a replacement anywhere. It is a 1.6L I4 with an automatic transmission. My question is, is there any interchangeable transmission? I'll even consider changing it into a 5 speed if the price is right. Or if you know any reputable shop that might have my transmission for cheap?

[nolig2278]

do a search on 5sp swap as i believe it will pop right in.
they also can be found for $150 to 300 at junk yards.

[Ryan]

atx must be from any sister chassis, B6 engine, IIRC. So, 1.6 SOHC 323 and protege I don't pay much attention to the autos, because they suck.

5 speed swap is found on here, its honestly just a day of work. Gathering the parts is a bit more difficult, might be a day in a scrap yard.

[grim760]

I've called every junk yard within a 50 mile radius and can't find another mx3 anywhere.

[Ryan]

Where are you located?

[Demonic1]

First off: BP, 92 RS, (had) stock F5M-R.
Looks like I'm hunting for a new tranny too. I went to a yard today and they brought out an auto 92 SOHC, but nothing on that interchanged (well duh). I looked at an Escort GT G5M-R trans, and the mating shaft looked longer (plus the whole motor mount didn't look like it'd swap over. The speedo interface looked different too. I was also a little unsure, as I'd heard something about our axles being different? (Splines?)
They had a 92 SOHC 1.8 protege, but wouldn't pull it since it was close to closing time.


So, what trannys interchange?

Escort GT (BP)
Kia Sephia
Protege LX (BP)
Protege DX (B8 & B6)
323s?

Also what about the speedos? digital vs. cable?

I've called every junkyard in the south seattle area and haven't found a tranny yet (or overlooked my options?)

[Ryan]

Man.

BP is G series transmission. This is known. digital speedo, and G sized internals, and G axles, etc... so no, BP is a G series. 92 RS is an F series.

People have thrown escort GT axles into the MX without binding, but I wouldn't. the escort GT motor you looked at was either a BP or an 1.9l SEFI bulls--- ford motor.

You're asking questions that are answered in the first post. All B series engine's transmissions interchange.

[Demonic1]

Yeah, I didn't want to throw another 150-200$ at axles anyway.
I've already got to get a new clutch (blew a hole inside the bell housing and dumped the gear oil on clutch)

So the G series tranny used different axles (22 spline? or something like that...)
The digital speedo was on all versions of the I4 G series trannys?
The G internals from the I4 and V6 are swappable (as posted on page 1)

I guess my real question was for the 92 SOHC protege tranny interchange.
I'm also asking questions to help get a some information I thought might be lacking.

Do we have a post about which trannys were on which motors/cars?

[grim760]

I'm from San Diego California.

[Ryan]

Just go get BP axles from a Escort or Protege. Apparently they do not bind. They will fit your MX hubs.

It says clearly, even in caps on the first page that all B series engine's transmissions interchange.

[grim760]

So any b series transmission from any year from a mazda or other sister company will bolt on without any problem?

[Ryan]

any transmission from any B series engine, yes.

Thats what I meant by this:

Yup. Any B series 4 banger from the 1.3L in Europe, the the 1.8L B8 have the same transmission bell housing, that is, THEY ALL INTERCHANGE.

[grim760]

Sorry for being such a ditz. I just don't want to go and spend money I don't have for something that won't fit. Thanks for the info.