Cup Car Box- LSD Inside

[Yoof]

ATV Cup Car box, I need to measure pre-load on the diff tomorrow.

I believe this is ex-JBM/ Frode box so possibly they can shed more light on it's history. Selects all gears fine, and seems to clunk less than my gripper (annoyingly!).

I'd like £650 (basically £400 for an LSD installed and ready to go).

If this is going to be transported by me I will drain the box oil (can save this if you want)

Cheers

Pete

Collection Jct 12 M40 or BVF this coming weekend.

[Yoof]

Sold pending payment.

[djtez]

did you ever get round to measuring the pre load on the diff ?..
just out curiosity wondering what it was set too .

[Yoof]

Yup, this was very low I think due to non-diff oil being used at some point.

Normally cup car diffs ran between 80-110lbft I believe, I run about 90lbft on mine.

[djtez]

on the inside of the box i have build by JP engineering i think it was who fitted the diff must have written numbers on the inside of the box ..

.77 i think or 0.77 im sure..

would this be .77mm shim possibly ? .

[poloeatonm45]

How would u go about checking the preload? I bought a cup car lsd and had it put into my g40 box. No have no idea what the preload is

Steve

[hayesey]

you need the diff out of the box to check it really.  I think I might have put the procedure I use in one of my posts in the transmission faq section