During my last blog post, I mentioned that above all, Boost Is King at Gatebil.
Walking around the paddock will quell any naysayers. Everywhere you look, the all too familiar chrome snail can be found making elbow room inside engine bays.
It is evident that anyone car turning up to Gatebil will more than likely be boosted. But why? What is thinking behind this?
To be frank the Scandinavian’s seem to be power hungry, to a somewhat fanatical level as well. The more power, the better. Ask anyone of them that you meet and they’ll tell you.
Aside from being more power driven than paranoid Dictator, there is actually a logical reason for boosting your car. Now I know most of you will roll your eyes knowing exactly why you would decide to go down the route of forced induction but lets imagine you don’t.
Put simply, boosting is a quick and efficient way of extracting more power out of your engine rather than spending hours and hours and lots of money developing and tuning your naturally aspirated engine.
Sure, you could tune your NA engine with the likes of a free-er flowing exhaust, new intake, racing cams etc but you aren’t going to get the significant gains that either turbo charging or supercharging will give you.
Let’s start with the lesser found supercharger (at Gatebil). What is and why? A supercharger is essentially a compressor which is driven off of the crankshaft which sucks in and then blows air into the intake. The more revs, the more air, the more power. They are small, require relatively little work and offer instantaneous and linear power delivery.
The downside to this instant power delivery is that to drive the supercharger, power is sacrificed as it is increased load on the engine. This ‘instant power’ can also put a lot of load on the engine at lower rpm’s which oil pressure will struggle to handle. They also don’t offer the sort of power increases as turbo charging can.
On to turbo charging. The only real restriction on the engine is an indirect one. At lower rpm’s the exhaust is slightly restricted. Turbos use exhaust gases to drive a centrifugal compressor which then draws in air and accelerates it in an additional turbine housing.
A turbo charger is more efficient than a supercharger. They can also provide up 20-30% more power than a supercharger. Either way you look at it, adding boost adds more power. Which route you go, depends on your budget.
One thing is for sure, Boost is King at Gatebil.
Words & Pictures: Dave Cox (SHOOTING DAVE)