I have got a focus 1.8 turbo soI am looking for a gearbox with a lsd in.Has the st170 got one if so will it fit in my car,will the drive shafts gone in ok???All so looking for st front and rear brakes compelete.

 

ST170 has a 6 speed gearbox so i think that may be different and i dont know if the focus rs one will fit

 

The ST box is as mentioned a 6 speed box but it doesnt have an LSD, I believe that Quaife make one but have no idea if that i definitely true or how much it would be.

If you want a focus box with an LSD you'll need an RS focus box, though this too probably wont be cheap.

All the 1.8 and 2.0 petrol focus engines share what is essentially the same block despite some of them being badged otherwise and so the gearboxes should fit on, but may need some work to get them on. It may be worth speaking to a company called Power Engineering about ease of fitment as their turbo focus has had a few different boxes on now and is currently running an ST box.



SPUD

 

The quaife LSD for the 6 speed getrag box from the 170 is IIRC about 25% more expensive than an LSD for the MTX75 which is found in the 2.0 focus. (probably around 1000 quid).

Someone here told me once what an FRS gearbox cost new, I'll search my posts and find out, but that's the box you want, cause it's an MTX75 with the quaife drive. Alternatively, you could get an MTX75 box from a parts dealer and buy the quaife LSD for it and fit it.

Sorry, can't seem to find the thread with the information, and the search feature is broken, but I remember that new from Ford the MTX75 was about 890 quid, and the FRS box probably closer to 1500 ... but I hope someone that knows for sure will correct me if I'm wrong

 

The RS box is £940 with LSD with it, the ST170 box quafie have a 6-speed dog engagement gearkit which is £2250.

If you used the ST170 box you would need to replace the shafts and hubs as they are different, same with the 2ltr (mtx75).

The 1.8 uses a IB5, not a mtx75

 

Damn the RS box is cheap! Anyone know if the only difference between the RS box and the regular MTX75 is the diff, or if it's toughened up some more... I saw on some getrag page that the MTX75 was specced up to 345Nm ... the iB5 for something like 170Nm ... just curious if these were very conservative specs or not.. because I have a feeling a lot of people will be pushing their RS's past the 345Nm mark

 

If you get the RS box you'll also need the drive shafts, this has been done on a turboed 1.8 Focus before with no problems