LSD for a Griffith - Quaife ?

[ESDavey]

I like a few track days in my '98 TVR Griffith and have been considering a new differential from Quaife.

I have seen some AMG Merc owners liking them alot but wondered if any TVR owners have changed their diff, did it really make a difference, etc

I am always concerned that when you change a major component, this passes extra stress to other components. Anyone go a view on the possible downsides of a "firmer" LSD ?

Edited by ESDavey on Wednesday 18th March 15:26

[spend]

Ask Steve-V8s?
http://www.pistonheads.com/gassing/topic.asp?h=0&a...

[steve-V8s]

Suppose the question really has to be do you currently think you are spinning one wheel out of corners ? I Hill climb a Griff and from pictures it was obvious I was sometimes spinning just one wheel off the start line and also spinning the inside wheel out of corners. I had a Quafe ATB put in the diff which does seem to work off the line and is fairly progressive out of corners. The down side is it is more challenging to if you get on the power a bit too early. With the standard setup you can stand on the throttle and the unloaded rear wheel spins harmlessly, with the ATB it correctly sends the power to the loaded wheel so be ready for a lot more power oversteer. The other thing I have found is that the car now tramps badly in the wet. I have changed the DIFF bushes and not tried it since so hope that will have fixed it, interestingly another RWD driver reported the same thing.

[ESDavey]

Thanks ... its the axle tramp that you mention which is putting me off ... its a horrible & frustrating feeling so I recall !

I do like the image of consistant power out of tight corners, oversteer and I do like the odd donut !!

In balance, I'm thinking its a real benefit for hill climbers who exit from multiple tight bends but gives minimal benefit on most UK tracks - would you agree ?

[steve-V8s]

I would tend to agree that unless you feel there is something wrong with the standard unit then there is probably no benefit in spending the money. I fitted the Quafe purely because the LSD in the standard one had rather too much S and not enough L. As I understand it the plate ones tend to need fairly regular adjustment to keep them, tight where the torque biasing ones are (should be) fit and forget. Quafe think it is unlikely that the tramping is a fault in the Diff and I tend to agree that it must be something with some twist in it loading up and then letting go. Aleredy had solid suspension bushes and setting the dampers all the way from hard to soft had no effect. I am hoping that it was the Diff casing moving on the bushes, will see next time it is wet.