4 replies to this topic

[Tomm]

Hey,

Whilst browsing various mini foprums i have seen and heard about supercharged 1380s quite a lot and have found that it is some thing that seems to be a option that seems to fall into my money bracket. I was just woundering what supercharging actually was? Is it anything like turboing a car? what actually happens in the engine of a super charged engine?

If i was to build myself a supercharged engin, using a easton e45 supercharger what would i have to do? Unlike turbominis.co.uk there is no superchargedminis.co.uk for me to go and look on and i think that the only suitable place for me to ask is here, so sorry if i shouldnt have posted it here but meh...

If anyone could get me up to date on this i would be very greatfull.

Thanks a lot, Tomm

[Bounce]

Super charging is another way to create forced induction in an engine. Forced induction is when air is froced into the cylinder at pressure.

More air + more fuel = more power.

Whereas turbos use the exhaust gas to spin a turbine, which then spins the compressor. A superchargers compressor is belt driven by the crank pulley. With turbos you get lag, when the compressor isnt spinning fast enough to do its job, and the engine comes on boost around 2500-4000rpm depending on the turbo. Supercharged engines are near enough always on boost with little or no lag apparent. Most people see the 'no lag' factor as a plus, but people who have driven turbo'd cars come to love the sensation of the engine coming on boost.

One of the biggest down sides to supercharges is that because they are belt driven they nibble away at your hp. How much i cant say because i dont know.

The setup, id imagine, is almost the same for a turbo build adjusting fuel and what-not.


HTH

[Tarks]

basically as bounce said here,

but remember superchargers are kinder to an engine as your engine needs exhaust pressure to turn a turbine/turbo,
The charger altho taking crank power to turn is far smoother as its constant from the get go.

No lag means more drivable and the bhp loss can be gained back in lightening the 40lb ish of engine moving mass/force when using a charger its possible this figure gets pushed to more like 45-47 depending on charger type and its rotor turning force needed .

(all mods should really be used on any hight torque/bhp engine any way)

basically the engine see's everything from the crank onnwards as a force/weight to push

ie turn of the crank, push of the pistons against compression.the drop gears and gear box layout etc

all on an a series add up to about 40lb's of force . so get straight cut drops,sc/cr gearbox,semi helical final drive, an lsd ,lightend crank and rods with a lightened fly wheel to finish(there are many more mods that im sure people wll post up
i listed the main obvious weight saving force reducing mods)

the lightening of the crank assist engine rev responce off load as does the lighter fly wheel
and con-rods.
everything else mentioned assists in keeping power produced to a low waste level right to the wheels in the best controlled manner

(most mods should really be used on any high torque/bhp engine any way eben if n/a turbo'd or chargered)

as for what you need on a kit please look at smudgers thread on supercharger kit suppliers etc

cheers Tarks

Edited by Tarks, 02 January 2007 - 11:18 AM.

[Dev]

You may wish to buy Maximum boost by corky bell as this will also give you insight in to how these things work.

[fikus01]

im asuming you've gone off the k-series idea then?? no worries if u have, just need to know because shes gota go.