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View Full Version : Focus ST 1.4 seconds quicker to 100mph with a Quaife differential!


Rally Matt
15-Feb-2008, 10:47 AM
:Performance Ford magazine proves the value of the Quaife automatic torque biasing helical gear limited slip differential in a 350bhp Ford Focus ST.

When Nick Thomas, Deputy Editor of Performance Ford, the UK's leading Ford tuning title, approached Quaife with the idea of conducting a back to back performance test on the Quaife ATB helical gear limited slip differential we were keen to accept the offer.

As well we might, because the team at Quaife Engineering has enormous confidence in the performance and reliability of the ATB differential unit. That's why it's the number one choice for race and rally users, fast road customers and the world's leading car manufacturers including Ford, General Motors and Chrysler.

Even so, Performance Ford's results were astonishing - using a 350bhp tuned Focus ST, a baseline set of figures were generated using the original ‘open' Ford differential.

The Quaife ATB helical gear limited slip differential was then installed and the same tests conducted, albeit in worsening weather conditions, which left the test track greasier than before, yet the Quaife unit shaved a massive 1.4 seconds off the 0-100mph time, as well as trimming 0.3 seconds from the 0-60mph sprint.

With a retail price of just £550.00 plus


Any takers perhaps? :D

Friendly efficient Quaife agent in the Oxford/Northants area looking for fun times making your Focus ST even better.

Jerry
15-Feb-2008, 12:08 PM
Any takers perhaps? :D

Friendly efficient Quaife agent in the Oxford/Northants area looking for fun times making your Focus ST even better.

You now I want one - but don't want to shell out much more than a £1000 - broke you know!

Might try to hawk the BeEM this PM in the Oxford Motorpark!

Jerry
15-Feb-2008, 08:24 PM
Info from the Quaife site:

Ford Focus ST225 M66 Quaife ATB differential

Product code: QDF13J


£550.00 (Unit price exc. VAT)

Quaife ATB differential for Ford Focus ST225 M66 is suitable for Ford Focus ST225 using the M66 gearbox. A direct replacement for the standard Ford open differential, the Quaife ATB differential transforms your car's performance.

Unlike a conventional plate-style limited slip differential, the Ford Focus ST225 M66 Quaife ATB differential relies on gears rather than clutch plates for its operation. That means it is much smoother in operation.

The Ford Focus ST225 M66 Quaife ATB differential never locks harshly with a set pre-load of wheel slip across the driven axle, like a conventional LSD. Rather, the Ford Focus ST225 M66 Quaife ATB differential automatically biases the torque away from the spinning wheel across the axle, to a constantly varying degree, and never locks.

The Ford Focus ST225 M66 Quaife ATB differential has many benefits over a standard open differential, including maximising traction and minimizing wheelspin, eliminating torque steer and snatching in front wheel drive cars compared to conventional LSD units, and a maintenance-free design which retains the standard oil lubrication.

The Ford Focus ST225 M66 Quaife ATB differential is proven in circuit and drag racing, rallying and road use, and is produced from Corus steel billets, and is CAD designed and CNC machined, then inspected to ISO 9001 standards.

With over 170 applications, the Quaife ATB differential is second to none. Accept no imitations!

Quaife ATB differentials are used by Ford, General Motors and Daimler-Chrysler as original equipment.

The Quaife ATB differential for Ford Focus ST225 M66 is also now subject to a lifetime warranty (subject to terms and conditions).

DaveZS-X
26-Feb-2008, 01:23 PM
impressive!

Jerry
16-Mar-2008, 05:11 PM
impressive!

It is but its a £1200 modification. However, not only do you get performance you also get better handling (no torque steer).