Quaife lsd now available for TVRs - limited number

[tail slide]

Two of us have ordered one, we need just 8 more orders to make up a batch. The BTR differential is fitted to all recent TVRs inc. Griffs, Cerberas, Tamoras.

Quaife have adapted their renowned ATB limited slip diff to fit inside our BTR differentials. This upgrades your standard or hydraulic hydratrak diff to their more effective Torsen gear-type diff which is ideal for road or track use. Their patented design instantly transfers an infinitely variable amount of torque between the rear wheels for maximum traction – similar to a Hydratrak in behaving like a normal ‘open’diff, until you start losing any traction, except;

- It works fully at low speeds too, avoiding the one wheel spinning and losing traction that happens with the hydratrak at low speeds

- It’s more reliable for trackdays as it doesn’t rely on fluid that heats up tremendously and fails if your wheels spin too often in a session – see your handbook warning.

Their ATB diffs are original equipment on Noble, Caterham CSR, Lotus, Morgan Aero and some top Daimler and Ford models, as well as many of the top cars in circuit racing. I rate it from previous use on my Griff-engined Ginetta racer.

They explain it better - http://www.quaife.co.uk/What-is-a-Quaife-ATB-diffe...

The price for the ATB for other marques is normally £667 plus VAT, but they’ll give us a special 10% discount for a batch. If you’d like any more tech info ask for Len or Matt at Quaife on 0845 130 7400

Please drop me a PM if you’d like one from the batch.

[BCA]

Paul, does this mean we would have to do this on an exchange basis? If so, do you happen to know the turn around time? Could well be verrry interested as ours has been on its way out for about the last 25k miles!!

Edit: would we also be able to specify different ratios? We could possibly do with just slightly longer gearing...

Edited by BCA on Saturday 26th May 19:52

[TT Tim]

I'm not sure that anything that makes you quicker round a circuit is a good idea, Paul.

Diff' sounds very interesting, If I wasn't up to my neck in engine rebuilds I'd be game.

Look forward to seeing you out 'playing' with us again SOON!

Tim

[tail slide]

BCA said:

Paul, does this mean we would have to do this on an exchange basis? If so, do you happen to know the turn around time? Could well be verrry interested as ours has been on its way out for about the last 25k miles!!

Edit: would we also be able to specify different ratios? We could possibly do with just slightly longer gearing...

Edited by BCA on Saturday 26th May 19:52

Hi Ben, glad to hear the diff has lasted, it needs more abuse

The lsd doesn't affect the gearing, but makes sense to change at same time if you’re going to - you need this…..



from them….

http://www.gearboxman.co.uk/index.html

and the little matter of another £500.

[tail slide]

TT Tim said:

I'm not sure that anything that makes you quicker round a circuit is a good idea, Paul.

Diff' sounds very interesting, If I wasn't up to my neck in engine rebuilds I'd be game.

Look forward to seeing you out 'playing' with us again SOON!

Tim

Hi Tim,

With the handicap the Championship will saddle me with, need to make sure all the horses earn their keep

It's a pain waiting for engine builds, hopefully worth it for us both.

Paul

[BCA]

Paul, not sure if you missed this yesterday; do you know if its done on an exchange basis?

[tail slide]

BCA said:

Paul, not sure if you missed this yesterday; do you know if its done on an exchange basis?

Yes, missed it Ben.

Price quoted is full price, no exchange needed so you keep original to sell or as spare.

[HarryW]

tail slide said:

BCA said:

Paul, not sure if you missed this yesterday; do you know if its done on an exchange basis?

Yes, missed it Ben.

Price quoted is full price, no exchange needed so you keep original to sell or as spare.

What ratio is it supplied in as standard, what other ratio's are available and is there a price difference.

[ogg]

Im interested but is it a significant increase on hydratrak.

Edited by ogg on Sunday 27th May 18:08

[tail slide]

ogg said:

Im interested but is it a significant increase on hydratrak.

Edited by ogg on Sunday 27th May 18:08

Some of the difference depends on how you're using your car Ogg - road or track?

[tail slide]

The Hydratrak diff locks as it loads up with speed increasing - it can be quite unsettling at times to have this transition between an open and locked diff, if you're accelerating and run out of grip.

[tail slide]

Now have 5 towards the batch of 10;

Paul T350
Matthew Griff 5.3
Andrew Chim 500
Jeff & Ben Cerb (reserved to be confirmed)
Ian T350 (reserved to be confirmed)

Please note there may not be another batch this year that they can fit in - I've been waiting since November.

No deposit is needed by Quaife, once we have 10 I'll just ask you to send an e-mail direct to Quaife confirming your order, address details etc. They'll then let you know when it's ready for dispatch - approx 4 weeks from ordering.

[yanmar]

paul please put me down for one . i am away till 5 june will hopefully talk then tony

[tail slide]

yanmar said:

paul please put me down for one . i am away till 5 june will hopefully talk then tony

OK Tony, 6;

Paul T350
Matthew Griff 5.3
Andrew Chim 500
Jeff & Ben Cerb (reserved to be confirmed)
Ian T350 (reserved to be confirmed)
Tony Tamora

Edited by tail slide on Tuesday 29th May 21:55

[spicy six]

Hi Tailslide, very interesting post.I may well be interested in adding my name to your list of potential purchasers. I have a number of quieries you may be able to answer.
In your opinion, will the Quaife ATB provide significantly higher levels of grip and traction, prior to the point of lock up than the original TVR fitments? Would you expect the Quaife to resist lock up for longer than the TVR originals? Or are the main benefits of the diff a more progressive and forgiving behavior once the grip levels have been breeched?
Some of the guys on the Ultima forums feel that the Quaife ATB can induce understeer as a result of the grip levels at the rear of the car overwhelming the front. Did you experience similar problems with the diff fitted to your Ginneta, and if so how did you overcome them?
Will Quaife supply the oil seals and gaskets nessecary to
fit the diff to the BTR housing? if not where can these
parts be sourced and do you have any ideas of the likely
cost?
Are you intending to fit the diff yourself? If not who do
you intend to use to undertake the work and what is the
likely cost?

[tail slide]

spicy six said:

Hi Tailslide, very interesting post.I may well be interested in adding my name to your list of potential purchasers. I have a number of quieries you may be able to answer.

OK, and if you need further info, Quaife are knowledgeable & helpful...

spicy six said:

In your opinion, will the Quaife ATB provide significantly higher levels of grip and traction, prior to the point of lock up than the original TVR fitments?
Would you expect the Quaife to resist lock up for longer than the TVR originals? Or are the main benefits of the diff a more progressive and forgiving behavior once the grip levels have been breeched?

Yes more traction, because the fluid in a hydratrak allows some free spin before it starts transferring torque. One wheel spinning was noticeable to me quite often out of tight corners with the H, but not with the Q, either both would slide very slightly or more often not at all.

Personally I liked the consistent feel, it locks up progressively at low, mid or high speed IF you lose traction, compared to the hydratrak which locks noticeably more firmly the higher your road speed - which for the novice is a fair safety factor to avoid embarrasing 360's out of junctions

spicy six said:

Some of the guys on the Ultima forums feel that the Quaife ATB can induce understeer as a result of the grip levels at the rear of the car overwhelming the front. Did you experience similar problems with the diff fitted to your Ginneta, and if so how did you overcome them?

The handling of our front-engined TVR's is fundamentally different to the mid-engined Ultimas. S6 TVR's in particular have a set up that is exceptionally resistant to understeer (as PW hated it!); from a quick scan of Ultima postings there are also many opposite opinions.
Understeer under power didn't happen with my Ginetta.

spicy six said:

Will Quaife supply the oil seals and gaskets nessecary to
fit the diff to the BTR housing? if not where can these
parts be sourced and do you have any ideas of the likely
cost?
Are you intending to fit the diff yourself? If not who do
you intend to use to undertake the work and what is the
likely cost?

We'll only need the normal TVR diff gasket/seal, can't remember offhand if included from Quaife but available from any TVR dealer/Indie. The diff gears need to come apart, the ATB unit fitted in the centre, then the unit bolted in & torqued up precisely - I'll have mine put in by my local garage.

[v8sag]

Hi Paul
Very interested,pending torque rating and vat exclusion (for export)

[tail slide]

v8sag said:

Hi Paul
Very interested,pending torque rating and vat exclusion (for export)

Guess you'll need one more than most, with an LS1

The torque rating is high but can't remember exactly - are you asking your q's direct to Len at Quaife, or do you want me to pass them on when I speak to them tomorrow?

[v8sag]

tail slide said:

v8sag said:

Hi Paul
Very interested,pending torque rating and vat exclusion (for export)

Guess you'll need one more than most, with an LS1

The torque rating is high but can't remember exactly - are you asking your q's direct to Len at Quaife, or do you want me to pass them on when I speak to them tomorrow?

If you wouldn't mind asking,toss up between this or going 9",the lsd's at present are sliping after 3 races's needing constant freshning.

[tail slide]

v8sag said:

Hi Paul
Very interested,pending torque rating and vat exclusion (for export)

Quaife advised;

'Don't worry about torque rating our units do not have a lifetime warranty for nothing, the crown wheel will pack up long before our unit does. No problem either with vat to NZ only postage which could be as much as £120'

The warranty applies even though you're racing with it.