View Full Version : 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/o151/nx_nzed/75vsztgearspeedtable-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
petet16
24-06-15, 09:49 AM
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.
petet16
24-06-15, 11:23 AM
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?
petet16
24-06-15, 11:59 AM
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
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!)
mattyprice4004
24-06-15, 03:11 PM
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.
top_man_eldo
24-06-15, 03:54 PM
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!
petet16
24-06-15, 04:05 PM
And it comes with a torsen diff
top_man_eldo
24-06-15, 04:31 PM
They should have fitted this gearbox to the ZS at the factory!
talkingcars
24-06-15, 04:45 PM
Don't mention the dual mass flywheel on the ZT.
Anything is possible at acost but I wouldn't bother with this, you'll be messing with the clutch hydraulics, gear change, drive shafts, hubs, brakes, ABS.................
For all the info you want on the PG1 go to www.rovertech.net
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