MT75: V6 4x4 to 2WD
Hi,
I copied this over from the Wanted section, as it has more relevance here for all us MT75 fans!
JoelP: No, I haven't converted it yet. In my gearbox collection I now have a 2.9 4x4 box and a 2.0DOHC RWD box. ATM I don't know if the
input shafts are the same length (i.e I don't know if it is like the type 9 where the shafts are different for Pinto & 2.8). Best case
scenario is that input shaft is interchangeble, so in effect all I have to do is change the "bellhousing" (not too difficult - I stripped
& rebuilt another MT75 a while back). Second best scenario is that input shafts need swapping, but 1st gear ratio is the same on both. (I have not
yet checked).
3rd best scenario (if 1 & 2 don't work) is that 5th gear ratio is the same, so I can use the guts of the 2.9 box but the output shaft of the
2.0. 4Th scenario is that I just stick with the 3.0 Essex lump & 4spd+overdrive box that God intended to go in a Scimitar, and which I already
have. 5th scenario is that I question why I am bothering, why can't I just be happy with a boring car, and get very drunk!!!
ChrisW: I know that works for the 2.8 & type9 box, but 2.9s came with the MT75 box. I don't know if you can fit a type9 to a 2.9 (or an MT75
to a 2.8). I would prefer the MT75, as it is a better box.
If & when I do convert, I will let you know whats invloved. Meanwhile JoelP, don't bin the 2.9 & box just yet.
UPDATE 02.04.05
1. Just had a quick look at my 2 MT75's:
The input shafts are different; V6 one protrudes by about 30mm (by eye only, no measuring sticks involved). The 4pot box shaft protrudes by only
3-5mm. The splines on both boxes start at about the same place; i.e about 20mm inside the bellhousing, so the extra length of the V6 shaft is all
spigot and not spline. Therefore, we must hope that the 1st gear ratios of the 2 boxes are the same, so I only have to change the first motion shaft
(input shaft); If 1st gear ratios are different, I will have to use the V6 layshaft assembly, so I must hope that the back end (i.e 5th gear) is
interchangeable.
I won't be doing any more work on these for a few months, as this part of the project is on the back burner, but I will update when I know more.
2. I get the impression (from a number of sources) that the Type9 and MT75 are interchangeable, as the 2.9 block & 2.8 block are the same -
alledgedly!!
Cheers,
Terry
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