LSD as standard?

Zephyr

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What seems to be the story with the Z3 facelift models.
Had a chat with a fellow Z owner and we checked his VIN, it appears that his car was supposed to have an LSD but it surely doesn’t.
(we lifted and checked the wheels - also no S letter anywhere on the diff case). Mine also checks with an LSD and definitely has one. (But it also has the “sport” options).
Anyone else with a 1.9 that is supposed to have one but hasn't?

(you can check your VIN here https://www.mdecoder.com/ )

cheers
 

motco

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Dec 6, 2011
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Chilterns
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Z3 2.2i Sport
My 2002 2.2i Sport has a Torsen diff. This a 'softer' kind of LSD (Google can find technicalities). Which models had them I cannot say, sorry.
 

Stevo7682

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The M44 Massive
Scottish Zeds
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Maybole , South Ayrshire
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Z3 Individual Dakar / Orinoco Individual
1.9 don't usually have lsd fitted unless it's a sport model or has been added as an optional extra.
Stephen.
 

Duncodin

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Pontrhydyrun
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Z3 M44
I have 1999 1.9

I don't know if it has a limited slip diff but - slightly off topic - a while ago the missus got stuck in the snow outside her mum's house and she phones me to come help.

The snow wasn't deep but as soon as you tried to move off the engine would stall. That would be the traction control cutting the power to stop wheels spinning (I assume). But cutting the engine completely? what would be the point in that?

Anyway. I reversed it down the slope (Missus was trying to go forward) and turned it round at the bottom and sent her on her way home to put the kettle on while I trudged back up the hill to my car.

But, I suppose my question is, having the engine cut out completely when the car's stationary with spinning wheels stuck in the snow. Is that howit's supposed to work? What can traction control do? Without a limited slip diff all it can do is cut power - I mean it can't send power to a wheel that does have traction?

In hindsight switching off traction control would have allowed the wheel to spin and maybe 'swim' up the slope. But reversing down made more sense anyway.
 

Zephyr

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You can check if youre supposed to have a limited slip here: https://www.mdecoder.com/
Just enter your full vin and it will show the cars features.

as for the traction control I am pretty sure that in the Z it just cuts off power to the engine so wheels dont spin and thats all.
 

Stevo7682

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The M44 Massive
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As above should cut power back but not to the extent of engine stall
Stephen.
 

Lee

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British Zeds
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Z4 Coupe 3.0si
No definitive answer here really. All 2.2 & 3.0 Sport models had them fitted as standard, also 2.8's mostly had them at least 99% of them that have been through the shed have. I've only come across 1 maybe 2 1.9's with small case diff LSD's.

For info: All the non M cars that got the Torsen (Geared LSD) great LSD but will act like an open diff once you lift a wheel. Also when in the air both wheels don't spin the same way. The M models got the clutch pack LSD, the clutch's allow the levels of lock to be adjustable but also this is a wear n tear item so need to be serviced and the correct oil with modifier present.
 
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