Hello folks

Advice please?

I know it is an expensive option but I was wondering if it would be worth splashing out on an LSD for my 99 XKR coupe?

I cant believe that Jag would not fit one as standard but as Ford was skint in the 90s then their accountants probably deemed the basic ESP and traction control with a standard open diff was sufficient for a GT, just to save money...

It is ok on bone dry roads when you dont hoof it of the line but can be a bit jittery when it gets a bit damp or when you have a slightly heavy foot at low speed...

I have researched the Q
Quaife which is supposed to be the industry standard but have also heard that ATB LSD's are not really suited to auto boxes and can be a bit of a handful...

Any advice greatly appreciated...

Cheers guys 👍👍

Steve Smith

 

Firstly, you’re in the wrong forum.
But, I had the Quaife installed in the s-type, and the xjr. Hands down, Best modification I ever made.

And though late in the game, I am trying to get it done for the xkr this winter.

To manage the car with the mechanical LSD does take practice. But once I got the feel for it, I found the car significantly more nimble and more manageable.
But I’m not a drag strip person. I can’t comment on that. I am a windy road, in all the weather person… and thats where the new solution shines for me.

 

Many thanks for the advice Guy... I am not a drag strip person also...I have owned my 1999 XKR Coupe since 2009 and it is my pride and joy, no expense spared... original Nikasil cylinder liners and timing chains done and suspension bushes... just hit 100k miles recently and I just love tootling along the coastal roads in Newcastle England at 30mph as much as when I first got her... will be passed on to my nephew when I die...
The LSD would be really nice but for the money I could buy a project car... maybe I will just stick with originality... I have a nice 03 Golf TDI front wheel drive 130 diesel which I use in the winter when the Jag is tucked away in the garage..

My mechanic bought an RX8 with a knackered rotary engine for 500 quid and bought a 2.5L V6 Skyline lump for another 500 quid...it fits in well and works with the Mazda gearbox..

A bit of fettling and a bigger turbo and intercooler and upgraded springs and brakes and he managed 450bhp out of it for £3000 total...

Its a monster...with the light fibreglass body

I think that Japanese cars are built for modifying on a budget...

I know that the XKR can be modded to a certain extent with the LSD and the upgrading of the lower pulley of the Eaton screw S/C.... but its difficult to remap....I remember the XKRR concept car that Clarkson drove on Top Gear around 2004 with a manual box... but that would be a hideously expensive conversion I think...

I had it on the dyno and it was 346.8 BHP with no loss of Torque from the factory setting at 3.6k RPM

That is less than 1 horse loss a year from the 367 quoted from the AJV8 factory figures.

Maybe I will stick with original spec....

Anyway thanks for your advice...

Very best regards

Smitty 😀😀👍👍

 

Steve,

I've moved your question from XK/XKR (2006 - 2014) to XK8/XKR (1996 - 2006) forum. This is the place to post questions about your model.

Graham

 

Thanks Graham

Apologies for posting on the wrong forum

Smitty

 

You also have the option of the Gripper Clutch type LSD.