Cupra Steve
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Registered: 7th Nov 06
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Ok, the car i'm thinking of getting needs something doing to it to make it a bit more special.
I was thinking of turbocharging it, then thought of supercharging.
But i don't really know any thing about superchargers!
Am i right in saying that they boost constantly (no lag) and boost the same amount throughout the rev range, ie don't drop of like turbos??
As i said i don't really know anything about them, just really tempted as it's a bit different.
Thanks for any info, any opinions welcome, or adv/disadv over turbos would be much appreciated.
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CorsAsh
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Registered: 19th Apr 02
Location: Munich
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Superchargers are driven by a belt in the same way an alternator is for instance, unlike the turbo which is driven by exhaust gasses passing over the turbine blades.
Superchargers are generally boosting throughtout the rev range yes, although some have a clutch mechanism thatallows you to set when they spool up. They're fairly easy to up the boost on too, as it can be done by installing a smaller pulley
Adv over turbo = no lag, can sound amazing
Dis over turbo = lots more expensive to install.
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Cupra Steve
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Registered: 7th Nov 06
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OK, how does it actually boost?? Sorry but i've never actually looked into them before therefore having no knowledge at all, I love the sound of them!!! Do they offer the same sort of gains to turbo's??? Are they reliable??
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AK
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Registered: 5th Jul 00
Location: Aberdeen City
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why are you thinking of turbocharging then supercharging?
Why, if you know nothing about them 
I dont get it.
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topshot_2k
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Registered: 1st Dec 03
Location: Northampton Drives: Pug GTi-6
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Get VTEC
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CorsAsh
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Registered: 19th Apr 02
Location: Munich
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Probably more reliable than a turbo.
There's two types of SC, centrifugal (Rotrax) and screw (Eaton).
Centrifugal SCs are basically the same as a turbo, but in place of the exhaust turbine on one side, you have a pulley and gearing system that allows the compressor wheel to spin upto high RPMs. These are the most common aftermarket SCs as they can be more easily mounted.
A screw type SC has two close fitting, interlocking screws (look like twisted and tapered bits of metal) that spin against each other to suck in air, compress it and blow it into the intake. This is the sort that you find on a Cooper S for example. This sort of SC is more commonly used as OEM equipment as it is part of the inlet manifold and requires a bespoke intake.
They're usually used to get big power from big capacity engines, I know of a Corvette V8 with 2 screw type superchargers pushing out 1200 bhp.
Having said that, there are instances of people using SCs and turbos together, what's known as "compound charging", but thats a whole different kettle of fish...
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Cupra Steve
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Registered: 7th Nov 06
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quote:
Originally posted by AK
why are you thinking of turbocharging then supercharging?
Why, if you know nothing about them
I dont get it.
NO, one or the other, not both!!! i was thinking about it due to wanting the best for my money!!!!!!
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AK
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Registered: 5th Jul 00
Location: Aberdeen City
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best for your money would be not doing it or buying a turbo or SC'd car to start with. It will be better built and more reliable.... not to mention cheaper!
What car are you wanting to Turbo/SC?
Have you factored in lowering compression? HG, pistons?
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Cupra Steve
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Registered: 7th Nov 06
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quote:
Originally posted by AK
best for your money would be not doing it or buying a turbo or SC'd car to start with. It will be better built and more reliable.... not to mention cheaper!
What car are you wanting to Turbo/SC?
Have you factored in lowering compression? HG, pistons?
It's a 106 gti, a company does everything, pistons the lot. I just wanted to know about it.
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AK
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Registered: 5th Jul 00
Location: Aberdeen City
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how much? Whats the realistic outcome? Purchase price of the car?
I've seen a few SC'd saxo's.... quick but havent seemed to reliable
[Edited on 28-11-2006 by AK]
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khannys
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Registered: 21st Nov 06
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CHECK OUT EBAY TYPE IN INLINE SUPERCHARGER I KNOW ITS NOT A PROPER 1 BUT ITS A CHEAP METHOD TO A EXTRA 30 BHP
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AK
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Registered: 5th Jul 00
Location: Aberdeen City
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Ignore anything this guy says
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Cupra Steve
Banned
Registered: 7th Nov 06
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quote:
Originally posted by khannys
CHECK OUT EBAY TYPE IN INLINE SUPERCHARGER I KNOW ITS NOT A PROPER 1 BUT ITS A CHEAP METHOD TO A EXTRA 30 BHP
Piss off mate.
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