Mtx 75 transaxle

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probe_racer

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I had never even considered that trans until seeing it hold an f2t. PR, I assume you probably know the guy that goes by celicahalftrac on the probe/mx6 boards.

I think i do, there are quite a few people on the mx6/probe boards I know that have added LSD to their transmissions for better traction.
 

rubydist

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the clutch pack on the rh side of the front diff allows the rear prop shaft to spin at a different speed (by slipping that clutch) to allow cornering (since the front wheels have to travel farther than the rear wheels in a corner).
 

shomethe$$$

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the clutch pack on the rh side of the front diff allows the rear prop shaft to spin at a different speed (by slipping that clutch) to allow cornering (since the front wheels have to travel farther than the rear wheels in a corner).

Thanks the owners prefer the viscous over the clutch anyone know how much power viscous diffs can handle, i thought they were pretty weak.
 

rubydist

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depending on how tight the clutch pack is, it can chatter on turns, or limit the amount of torque transmitted to the rear axle.

the viscous coupling is more smooth, and definitely will limit the torque to the rear axle. there is also more energy lost in the viscous coupling.
 

SVOFANATIC

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The mtx 75 is arguably a weaker transaxle than the MTX-IV.

I would like to know how you came up with this assumption.


an MTX75 will handle 600+ hp a few people have run 500hp and never had one fail also there are TWO mtx75's the focus/ztech contour 5speed and the duratec v6 MTX 75 they have different bell housings, Yes the diff is weak but so is the SHO's and you can get an LSD for $713 shipped to your door. Other than that you're good now adapting wise good question I have no clue but the VSS should slide right in. Will it be accurate? probably not but you can fix it. axles would be your next issue as well as the trans mount....
 

Toolman

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We should revisit this. You can purchase a quaife geared MTX75 for under $3000. There are numerous stock MTX 75's holding quite a bit of power, and the diffs are less expensive. Even if the stock to stock power capabilities are not any greater than our MTX-IV, the fact that there are so many more 75's, and actual aftermarket support.

While it may take some work to get one to fit, once the first person figures it out, the rest will follow. I'm going to start looking into this, as the likelihood of ever seeing an HD trans cross my way again is practically nil.
 

dohcsable

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Keep us updated Tim. I'll probably never need anything more than stock.....I have my fix for speed now.
 

shomethe$$$

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We should revisit this. You can purchase a quaife geared MTX75 for under $3000. There are numerous stock MTX 75's holding quite a bit of power, and the diffs are less expensive. Even if the stock to stock power capabilities are not any greater than our MTX-IV, the fact that there are so many more 75's, and actual aftermarket support.

While it may take some work to get one to fit, once the first person figures it out, the rest will follow. I'm going to start looking into this, as the likelihood of ever seeing an HD trans cross my way again is practically nil.

I haven't kept up with your posts how are your fabrication skills? I mean someone can attempt it with a few basic tools, you would need something to cut 1/2-3/4" steel (like a mitre abrasive saw or bandsaw), a decent drill press, a die grinder and a few measuring tools, indicators, caliper etc. And of course a 100 amp MIG welder.

It would be nice to offer something, even I could do it for someone but what holds me back is someone paying $1-3000 for an adapter and then complain that a some things are not sized correctly and having to deal with that.

For example, if I misalign drilling a bell housing hole in the plate, and then oversize or egg shape it to correct it, I'm fine with it as long as the crank is perfectly centered but someone else might not like that.

I'm just gonna wait until Gen 4 prices go down or prices on all these newer automatic cars that look really nice and build a manual conversion for one or at least a swap. It took me a while to figure out that FWD can't really put that much power down unless you have sticky tires, so a transverse AWD is the way to go but they have plenty of weaklinks which I know I can fix. But I still wanted to see how far this motor would go and I'll probably never see it.
 

groove83

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honestly, I would be more interested in seeing someone try to use the tranny from the 3.0 probe. like was stated before, the 3.0 and 2.2s used the same internals and the 2.2T had almost the same amount of torque (190) as the sho. Last time I looked (it has been a few years) you could still get parts for the Mazda tranny's so that is a huge plus.

Also it would bolt right up. just have to figure out the clutch and if it clears everything.

Also something I was wondering. didn't the V8 sho's use the regular duratec bellhouing pattern? if so, technically, this Swap has been done before just reversed (MTX-IV on the V8) then there was the other guy that used the mazda 6 3.0 duratec tranny on the v8.

found this on probetalk...

3.0 V6 1g H5M-R Tranny
----------
1st: 3.250
2nd: 1.904
3rd: 1.323
4th: 0.975
5th: 0.711
Rev: 3.461
Final: 3.850
 
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dohcsable

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honestly, I would be more interested in seeing someone try to use the tranny from the 3.0 probe. like was stated before, the 3.0 and 2.2s used the same internals and the 2.2T had almost the same amount of torque (190) as the sho. Last time I looked (it has been a few years) you could still get parts for the Mazda tranny's so that is a huge plus.

Also it would bolt right up. just have to figure out the clutch and if it clears everything.

Also something I was wondering. didn't the V8 sho's use the regular duratec bellhouing pattern? if so, technically, this Swap has been done before just reversed (MTX-IV on the V8) then there was the other guy that used the mazda 6 3.0 duratec tranny on the v8.

found this on probetalk...

3.0 V6 1g H5M-R Tranny
----------
1st: 3.250
2nd: 1.904
3rd: 1.323
4th: 0.975
5th: 0.711
Rev: 3.461
Final: 3.850

They also have access to the M-Factory diff with those..... but idk how much it costs. Also, I think the gearing is different on the 2.2L cars. I can vouch that they can handle 400+ torque. :nut:
 
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