Cost of fitting an LSD

it involves dropping the box and taking it apart

Budget for around £200/£300 fitting. Least thats what it costs on the astra, not sure if the Focus gearbox is harder to remove.
 
thepharcyde said:
Does anyone know the work involved in fitting a LSD. The Quaife do one for under £600, just wondered on the cost of fitting etc.
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Just out of interest does the diff lock hard so to speak?

I know some aftermarket diffs on MX-5s that lock can cause a noticable amount of understeer in comparision with non locking torsens etc.
 
MrLOL said:
it involves dropping the box and taking it apart

Budget for around £200/£300 fitting. Least thats what it costs on the astra, not sure if the Focus gearbox is harder to remove.
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Id probably vote for a little more than that.

4 hours to remove, 1 to 2 hours to split gearbox casing, remove old differential, change speedo ring/crown wheels over, fit bearings, re-assemble/check shimming of gearbox. 4 hours to rebuild car.

Plus the cost of new gearbox oil and seals.

Id say £600 ontop of the diff cost for a proper job, but as said it depends on the car and its complexities and who you have doing the work (if they know the car then will be three times as fast as someone who doesnt).
 
my labour was what the vauxhall tuners charge, theres about 3 of them, all fitting diffs regularly, all despeate for the custom so theres a bit of a price war going on.

but the tuning scene is very similar for the Focus ST, i expect you'll be able to get similarly good deals on fitting with it too.
 
I have a Limited Slip Diff. It makes me feel like a man.


*Awaits inevitable the Girls car comments*
 
I'm quite sure it doesn't come with one as standard.

Evo 2007

I tend to leave the traction control button alone, too. It’s super-effective and does seem to manage the torque and slip with all the control of a limited-slip diff. In some respects it’s slightly better because you don’t get the torque-steer sometimes associated with an lsd (although there’s more tug as the tyres wear down). Turn off the system and the lack of a diff is all too apparent. Use all of the torque and the wheels spin-up very quickly and understeer skates you across the road. It’s a frustration that such a well-balanced chassis almost demands you leave the electronics dialled-in to manage the slip. The best of both worlds would be the sophisticated traction control married to a mechanical lsd – just like the previous Cooper S. I wonder when a diff will appear on the options sheet?
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Im definitely fitting a Q2 LSD to the 156 GTA end of the year/next service. I've been quoted £450 for the unit, and £150 (3 hours labour down here) for fitting.

Apparently it's a must on the GTA, in terms of improving traction and reliability.
 
Looking at the Quaife one for the Merc. Its more like £1500 fitted (at best) as apparently its a 10-12 hour job on the car! Tempted though, as no LSD is really annoying occasionally with this much torque!
 
Uh, how can it be so much work on a Merc? Surely its a fairly trivial job to drop the rear diff and fit the diff in comparison to doing it on a FWD motor.
 
Matt82 said:
exactly, a rear diff should be a doddle to drop down. theyre having you on
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I guess you have never rebuilt a RWD diff? Although physically removing the diff from the car may be a little easier, the actual rebuild is far more involved since you have to set up the meshing between the pinion and the crownwheel as well as the pinion and main bearing preload. On a FWD transaxle the only thing that needs setting up is the preload on the main bearings.
 
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