diff upgrade

[geeeman]

have a 4.5, with hydratrak diff

just wondering if there are any options to upgrade to a better LSD? especially if want to do more track days etc?

[DCerebrate]

Would go for Quaife ATB LSD, available through Quaife website. Watched too many videos of hydratak equipped vehicles spinning for no reason, so this was my first upgrade. Very predictable and stable rear end, safety for the road and faster round the track. Only drawback is combined parts + fitting cost.

[geeeman]

maybe a group buy?

[gruffalo]

I do quite a few track days and the Hydratrac is fine, if your is spinning up an inside wheel then I suggest it is faulty in which case a refurb is in order.

[geeeman]

i think this type of diff is always likely to spin inside wheel a little?

is a refurb expensive?

[gruffalo]

A few hundred quid I think, cant remember exactly but £600 sounds about right. Grantura Engineering did mine and put some stronger springs in it to make it lock a bit harder.

By the time this photo was taken I was back at full throttle, no wheel slip and you can see not shortage of rear grip, this is not on slicks either.

http://www.fresh-orange.co.uk/racers.php?e=13&...

Look at the 21st photo front wheel off the deck and the inside rear lifting.

[jesfirth]

You need a traditional diff for spirited driving. The hyrdtrac was an awful thing. I had one in mine when I bought it and it was rubbish on the track. Got rid of it pretty quickly and the car had much more grip as a result.

[aide]

What did you replace it with?

[gruffalo]

A Quaif ATB. Is the normal route to go.

I do drive my Cerbera rather hard, she spends almost as much time on the track as she spends on the road and the Hydra Trac has never let me spin an inside wheel even when it is half off the ground.

[Brummmie]

I might be getting Dave Mac props to make a gripper plated diff, what about a Gripper plated diff on group buy??

http://www.davemacprops.co.uk/gripper.html

Edited by Brummmie on Wednesday 9th September 12:06

[geeeman]

Id be interested

[450Nick]

Yeah I'd be interested - what's the difference in the mechanics of the Gripper vs the ATB?

[Brummmie]

The atb is clockwork, the gripper conventional plated.

[Incognegro]

Keep me informed Paul... Project 200mph Cerbera ;P

[Alexdaredevils]

I'd be interested

[geeeman]

quaife atb is about £850

any idea about the gripper?