Mg zt gearboxes
 

What can people tell me about the zt box and its difference to a zs, my old zt as I remember seemed to have a really good gear ratio and I wondered about its uses in terms of a racing zs, I'm guessing it's probably made better than a zs 180s anyone got ratios and diff options etc and no of anyone who's used one for a racing zs/zr?

Does this help?

http://i119.photobucket.com/albums/o...eedtable-1.jpg

Spec:- Ratios

1st/3.577.1
2nd/2.022
3rd/1.348.1
4th/1.029.1
5th/0.809.1
rev/3.308.1
final drive ratio 1.8 non t and 2.0v6=4.410.1
1.8t and 2.5v6=3.947.1
derv 3.737.1
Auto Jatco 5 speed/1rev
Exept 2.5 v6
1st/3.801.1
2nd/2.131.1
3rd/1.364.1
4th/0.935.1
5th/0.685.1

2.5 v6 petrol auto
1st 3.474.1
2nd/1.948.1
3rd1.247.1
4th/0.854.1
5th/0.685.1
Final drive 1.8+2.0 v6 4.15.1
2.5 v6 auto petrol 3.89.1
derv engins 3.45.1

The zt doesn't use a pg1 box like the zs so a bit of tinkering may be required to make it fit a zs.

A few obvious differences, the zt box is cable change, the engine mount is different on the zt box, I think it might be a lot of work fitting one to a zs

If the zt engine bolts directly onto a zs gearbox why not the other way round?

A zt engine doesn't bolt directly to a zs box.

The zt and zs use different adaptor plates, so as a start you'd need a zt adaptor plate to attach a zt box to a zs engine

It should fit no problem, found a mg zt forums thread where a guy fitted a zs engine to a zt and just changed the flywheel clutch and all was fine, also pretty sure the zt has a hydraulic clutch not a cable

Yes it has a hydraulic clutch, with the slave being inside the gearbox... I remember that when mine leaked (back in the day when I had a tourer!)

They're very different, to the point of all of the hydraulics being different too.
It's also not that much stronger - gearbox failure happens with those too.
Added to the fact the Slave Cylinder is an awful design and the 'box needs to be removed to change it, I'd rather have the PG1.

Have you considered the 620ti gearbox? This uses the same bolt pattern as the ZS and apart from a lifting eye and a different mounting bracket it's a direct replacement!