Williams or 16v supercharging
Just if anyones really bored and thinking of spending a bit makin their williams superquick.
http://www.autocraftsve.co.uk/
They supply supercharger conversions for most cars and can cater for the williams clio. The cost would be about £3800 which sounds like a lot but less than forged pistons, wild cams and throttle bodies etc.
They would provide:
Procharger centrifugal charger
No engine rebuild or forged pistons required
On 10:1 compression the boost would be about 9PSI
for the price you would get the supercharger with either an intercooler or charge cooler fitted. The power increase would be about 60-80BHP with up to 50% increase in torque.
Quote:
ProCharger - the next generation in supercharging
Imagine a bolt-on device that combines the simplicity of a turbo, with the instant, on-demand power delivery of a supercharger - that's ProCharger. No special exhaust manifolding of the conventional turbo, and none of the air-pumping inefficiencies of the conventional Rootes blower. Best of all, the ProCharger is self-contained, and comes with its own lubrication system.
Depending on the engine design and the installation, ProCharger can deliver anything between 55 to 100 per cent more power - and that's on street fuel too.
So how's it done? Simple, the ProCharger is a centrifugal device which uses the same principals behind the turbo, and is matched to an air-to-air intercooler - again borrowing from turbo technology.
However, because the ProCharger delivers its boost in line with engine speed, you don't have to wait for an exhaust turbine to spin up before the power starts coming through to the flywheel. And, unlike traditional lobe-type Rootes supercharging, the increase in air/fuel being forced into the cylinders is more gradual, rather than arriving as a sudden 'shock' load.
This shock load - leading to a sudden rise in the compression ratio within the cylinder - is what creates detonation under forced induction. And detonation, is what blows holes in pistons. Bad enough on a road car - but on the track, something that can put you right out of competition. That's why both turbo and supercharged engines usually have lower compression ratios to start with - even though it means that any forced induction has to play 'catch-up' in the early part of the rev range where a normally aspirated engine would already be coming onto the power curve.
The ProCharger's use of an intercooler has another benefit too. Reducing the air temperature increases its density. The denser the air becomes, the more thoroughly the fuel mixes in with the available oxygen, leading to a far more efficient burn. Not so much a bigger bang - as a better one. And a bang that is automatically cooler to start with. So excess heat, that other contributor to detonation, can be kept better in check.
