V8S - always a limited slip diff?
Discussion
I am sure all the V8S cars had an LSD but I dont know what type.
The quickest way to check is to jack up the back wheels - manually rotate one side and if the other wheel turns in the same direction its an LSD. If the other wheel turns in the opposite direction its not an LSD. You dont need the car in gear to do this.
The quickest way to check is to jack up the back wheels - manually rotate one side and if the other wheel turns in the same direction its an LSD. If the other wheel turns in the opposite direction its not an LSD. You dont need the car in gear to do this.
GreenV8S said:
The S4 and V8S all had LSDs but they were the chocolate fireguard viscous type which allows loads of wheelspin at low speed, so you could be forgiven for thinking they had an open diff or that the LSD bit had worn out.
So are you saying, in your experience/opinion, not worth the trouble or expense of fitting one ( ex Cosworth Scorpio for example ) to an S3 ?Edited by phillpot on Wednesday 26th August 20:25
My V8S with a viscous diff handled distinctly better at medium/high speed than the open diffed S2 that I had previously. But at low speed the traction out of corners was still poor. I've got a conventional friction plate diff now and it's better all round. If you're considering an LSD, don't bother with the viscous rubbish but definitely do go for a friction plate one.
phillpot said:
Thanks, appreciate the advice, but of course "proper" friction plate LSD's are just little more expensive ?
Like most things in life, guess you get what you pay for !
Actually friction diffs are far more common as LSDs go, funny that since they work so much better. It was very difficult to track down a replacement for the viscous one, and it turned out to be from some German Ford or other iirc.Like most things in life, guess you get what you pay for !
Last S4 said:
The quickest way to check is to jack up the back wheels - manually rotate one side and if the other wheel turns in the same direction its an LSD. If the other wheel turns in the opposite direction its not an LSD. You dont need the car in gear to do this.
Doesn't that depend on the type of LSD? Off the top of my head I can think of three different systems - gear driven (Quaife ATB style), mechanical ramp (or plate type) which seems to be most common and the viscous units, some of which can unlock over time.JoePublic said:
Last S4 said:
The quickest way to check is to jack up the back wheels - manually rotate one side and if the other wheel turns in the same direction its an LSD. If the other wheel turns in the opposite direction its not an LSD. You dont need the car in gear to do this.
Doesn't that depend on the type of LSD? Off the top of my head I can think of three different systems - gear driven (Quaife ATB style), mechanical ramp (or plate type) which seems to be most common and the viscous units, some of which can unlock over time.JoePublic said:
Last S4 said:
The quickest way to check is to jack up the back wheels - manually rotate one side and if the other wheel turns in the same direction its an LSD. If the other wheel turns in the opposite direction its not an LSD. You dont need the car in gear to do this.
Doesn't that depend on the type of LSD? Off the top of my head I can think of three different systems - gear driven (Quaife ATB style), mechanical ramp (or plate type) which seems to be most common and the viscous units, some of which can unlock over time.The only way to be absolutely certain what's inside is to take the cover off and look.
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