Archive for ‘ February, 2014 ’

Full Reveal of Vauxhall’s Radical Geneva Star


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PRESS RELEASE 26-02-2014

Luton – With over 300PS generated from its 2.0-litre turbo engine, the Astra VXR EXTREME will be the most powerful front-wheel drive Vauxhall ever when it’s unveiled at the Geneva Motor Show next month.

Derived from last year’s Astra Cup race car that competed in the Nürburgring Endurance Championship, the EXTREME is the lighter, more powerful street-legal race sibling to the current Astra VXR.

Shorn of 100kg, thanks to liberal use of high-quality carbon components, the EXTREME’s natural environment will be the race track. If public reaction is as positive as expected, Vauxhall plans a low-volume production run for the EXTREME.

Astra Extreme

Astra Extreme

With direct injection and variable camshaft phasing, the EXTREME’s 2.0-litre turbo petrol engine is the most powerful four-cylinder unit Vauxhall has ever produced. The all-aluminium engine is mated to six-speed manual gearbox transmitting power through a limited-slip differential.

The EXTREME is 100kg lighter than a standard Astra VXR thanks to its high-quality, carbon fibre components. This high-strength, ultra-light material is used for the aerodynamically-optimised rear wing, the diffuser, front spoiler, bonnet, suspension cross-bracing, engine cover, wheels, rear wheelhouse ventilation and roof.

Astra Extreme

Astra Extreme

Noticeably lowering the EXTREME’s centre of gravity is the in-house manufactured carbon fibre roof which weighs just 2.6kg, compared with a steel roof’s 9.3kg. The wings are made of aluminium and weigh only 800g a piece instead of 2.2kg in steel. Weight reduction in key areas greatly improves agility, overall handling and the car’s power-to-weight ratio.

Vauxhall has also given the EXTREME exceptional stopping power to match, with a Brembo six-piston brake system including 370mm diameter discs up front race car. Ultra high-performance, 245/35, 19-inch tyres, specially developed for the EXTREME, also play a key role and give almost as much grip as those on the race car. In addition, the damper is adjustable, just like in a real touring car racer.

Inside the EXTREME, the back seats have been taken out and a safety roll bar put in their place. EXTREME also gets Recaro bucket seats, with six-point safety belts from Schroth and a carbon-fibre-reinforced, suede-covered steering wheel with fine yellow decorative stitching.

The Astra VXR is now the best-selling VXR and the UK remains the largest market in Europe for Vauxhall and Opel’s highest powered models.

ENDS

Astra Extreme

Astra Extreme

Astra Extreme

Astra Extreme

Splat!

Splat!

Splat!

Splat!!
Self Adhesive Courtenay Sport Splat!

Gel Dome Resin Raised Bubble Badge

In Black with the Courtenay Sport Logo in Silver

Measures approximately 85mm x 85mm overall

Courtenay Sport Splats are Now Available £1.80

When is a 3″ Exhaust NOT a 3″ Exhaust?


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We recently had a Corsa VXR in for mapping and rolling road set up. The car was previously fitted with (by another company) a Full 3″ Turbo Back Exhaust System and uprated intercooler – which should be ideal for performance.

Our K06 turbo, an 80mm air flow meter and some higher flow injectors were added into the mix (the engine had previously been strengthened with forged pistons and steel rods)…….

Imagine our surprise when no matter what we did software wise we could achieve more than 266bhp, when around 300bhp was the aim with the components we had.

So When is a 3″ Exhaust NOT a 3″ Exhaust??…..

When it looks like this:

Restrictive Centre Section

Restrictive Centre Section

You can see from the restriction caused by the baffles that narrow the bore of the exhaust through the centre pipe, that the bore size is greatly reduced. This obviously reduces flow, increases exhaust back pressure and hampers performance massively.

In fact when the car went from a Stage 1 Remap, to having this particular exhaust fitted the customer did report he thought that the car felt slower!

Not only was there a problem in the centre section, but the tail pipes had the same problem:

Restrictive Tail Pipe

Restrictive Tail Pipe

Needless to say once we had found the restriction we switched the cat back section for one of our Courtenay Piper developed 3″ systems, which does not feature restrictive internal baffles and finished off the mapping, successfully achieving 306bhp, gaining over 45bhp mid range, 40bhp peak to peak and 50 lbs ft torque mid range!

Corsa VXR Graph

Corsa VXR with K06 Turbo Before and After removing a poor flowing 3″ exhaust

Astra J VXR Remapping


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We had another Astra J VXR in for mapping this week and it is good news that we are now seeing more and more of them. ECU remapping alone makes such a big improvement.

Otherwise a standard car, the ecu was treated to some enhancement offering much more mid range power and torque with good top end gains too, and the software was optimised, whilst the ecu was datalogged on the rolling road and a full set up carried out, checking AFR, boost pressure, inlet air temperatures, ignition time etc. A massive improvement all round, with mid range gains of between 10-40+bhp and torque with overall peak power at a shade over 300bhp.

Astra J VXR

Astra J VXR

Astra J VXR

Astra J VXR

Astra J VXR

Astra J VXR

Turbosmart Recirculation Valve


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We have been sent this lovely looking Turbosmart recirculation valve to try for the KKK K04/K06 turbocharger, which we rather like the look of. Once we’ve had a chance to evaluate it fully we’ll report back. In the meantime please enjoy this stylish piece of automotive add-on

Turbosmart Recirculation Valve

Turbosmart Recirculation Valve

Turbosmart Recirculation Valve

Turbosmart Recirculation Valve

Turbosmart Recirculation Valve

Turbosmart Recirculation Valve

Turbosmart Recirculation Valve

Turbosmart Recirculation Valve

The Courtenay Sport Blog


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