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Hi I'm looking to know if there is any other cars other then the Probe/626/MX-6 that share the smae tranny as our car? Or what gear sets are compatable? I couldn't find and info in search. even a link to this info would help alot. I want to upgrade and Freshen up my tranny soon. Thanks

Those are pretty much it. Custom gear sets can be bought, but I cannot remember who sells them and they were EXPENSIVE. I think the G series trannies for the four bangers use the same gear sets too, but I haven't had a chance to look at part numbers or try and swap them from one tranny to another. Just a visual inspection of an open V6 G series and a open 4 banger G series, they looked identicle- well the Kia 4 cly version of the G series and the Mazda V6 G sereis looked the same. The Mazda 4 cly version was weaker in several spots.

Well maby I can find a MazdaSpeed rotege Tranny and swap the gear set and diff from that into my case? I wonder if that would work? then I would have LSD.

Just the the diff- I think that is all you would need. However, I said I am not sure so if I were you I would find a really cheap 4 banger and v6 trans to play with first.

Search for posts by Gro_Harlem. I remember he swapped over internals from a Ford ZX2 trans. Said to have stronger gears and forks. I don't remember if the ratios were different tho, but i think they were.

Also, it appears the 4cyl G series use an alloy shifter fork on the secondary shaft, while the V6 G trans use a steel fork.

The Ford Escape also used a G series trans. I know one ZX2 company was making custom trannies with the Escape internals or something like that.

See the thing is my Tranny is starting to give me some grief. It just doesn't shift as smooth as it should anymore. So if I'm gonna take it apart I want to freshen it up. I was thinking if the gear sets are the same then why not just swap them into my case and have a newer tranny?

For what I was told the MSP LSD only works on 4:11:1 ratios. One of the reason for the ZX-2 swap besides for the better internals was also to change the ratio to accept the LSD. That's what I was told anyway, but regardless, should be a kickass combo anyway

Mike have you done the swap with that diff? If so what was the cost of the Diff and where did you get it? And if the Mazdaspeed protege gear sets fits my case then it should work. Does the ZX2 come with LSD as well??? if yes is the year car 97-00 or what?

It's in the process, my second tranny is apart, my case is getting powdercoated and I have the LSD with me in VA to get welded.

I got all my tranny internals from Gro just over a year ago. He can get MazdaSpeed components at a discount price for himself, but you can get the MSP LSD OEM through Mazda as well.

The ZX-2 gearset is apparently out of the SR model, but it's just an Escort, I dont see why it would have an LSD option. 97+ is the reported years. You can find some info on this setup in the FAQ.

http://www.mx-3.com/phpbb2/viewtopic.ph ... x2+gearset

So should I just get a 99+ escort zx2 tranny or do I need to find one from an SR? and for the taller 5th gear in Gro's write up did he use an mx-3 5th gear and a zx2 idler??? also can anyone confrim updated gears in the 98 and up 626???

off topic but i have a 5spd probe gt tranny and a v6 mx3 5spd tranny. both for sale. i dont know where you live but i may be able to ship them.pm me if you are interested.

Sorry I'm looking to upgrade I don't want another stock gear box.

Trevor wrote:Mike have you done the swap with that diff? If so what was the cost of the Diff and where did you get it? And if the Mazdaspeed protege gear sets fits my case then it should work. Does the ZX2 come with LSD as well??? if yes is the year car 97-00 or what?

The LSD in the ZX-2 was never available as a OE option but they did have a P/N# for a LSD kit that was never published in the Motorsport catalog although is in the computer. Came across this one quite by accident looking for parts for my ZX2 daily beater. BTW there was 2 different version of the G series trannies in the ZX2. The early production version of the '98 was a production freak with different gear ratios and all other version had the same mazda tranny. The 9/02 to end of production 2003 models would have had the same beefed up OE parts as in the Protege. The 2WD Tribute/ Escape use many of the parts from the bullet proof version of the G25 MTX used in markets out side of japan and north america.

Thancks For the Info yoda I think I will start searching the Wreckers for a low mile ZX2 Tranny and I will just get the MSP dif from mazda!

Trevor wrote:Thancks For the Info yoda I think I will start searching the Wreckers for a low mile ZX2 Tranny and I will just get the MSP dif from mazda!

It shouldn't be to hard to find a used ZX2 (note there is no difference between the MTX used in the SPI and Zetec, Escort sedan or wagon the '99-'00 S/R trannies are also the same). The total annual unit production numbers for the ZX2 in '98, '99, '00 exceeded the total number of MX-3's imported in to North America from '91-'96 according to NHTSB figures. It is also the same tranny as used in the 2.0L LX, ES & P5 Protege's and the +'00 626. As mention before trannies produced after mid 2/02 should have the beefed up internals such as main shafts, shift forks, syncros and some of the gears.