I have an MK Indy with a Hayabusa engine. The diff curently is a 3.92.

I have got my hands on a 3.34 crown wheel and pinion which I am going to fit in my diff.

My qustion is while I am rebuilding it would it be best to fit a LSD?
The car is used on the road and the odd track day.
I have spoken to Quaife who say a ATB diff would be best for what I use the car for. They also said it would transform the car but £690 is a big investment.

I have never driven a rear wheel drive car with LSD does it make that much difference?

I fitted an ATB to my Busa car earlier this year on a 3.14 ratio

It makes a huge gain on traction out of the bends

Presume its either a 3.14 or a 3.38

Real world nothing to see you won't notice any difference with LSD dont be scared

Start to get to the limit and hammering it on launches and corners then you might
So whilst its out yes do it

Busa needs a 314
Not sure what wheels you have but your top end must be seriously limited at the moment

Presume its either a 3.14 or a 3.38

Real world nothing to see you won't notice any difference with LSD dont be scared

Start to get to the limit and hammering it on launches and corners then you might
So whilst its out yes do it

Busa needs a 314
Not sure what wheels you have but your top end must be seriously limited at the moment

You will notice the difference between a free diff and LSD, inside wheel spinning up without unless you throw rubber at it.

They will promote their product, would you notice a difference between a Sierra viscous LSD for £150 to an ATB diff, I suspect not.

I think it really depends on your driving style to beg honest. If you drive hard and find yourself being held back by a wheel spinning up, consider getting an lsd. Really though, without sounding like a bell end, you don't need an lsd for road use. One reason that you might choose not to fit an lsd is that, when you do finally lose traction, thebackend will slide. Without an lsd it'll just spin up a wheel and not tend to go sideways.