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What A Mental Scooby


aido
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VW are doing the same with the new Golf GT. A 1.4 litre engine with cascaded turbo and supercharger.... 170 bhp. The S/C is high revving (about 5x crank rotation speed, compared to the usual 1.5-2x on most s/c'd cars) to provide low end grunt, and a big turbo blows its tune at high revs, at this point the S/C is bypassed. Feels like an engine double the size, while 10% more fuel efficient.

Cheers,

RX-Men-8

P.S. from the WRX pics, see the small S/C pulley, I think it's the same high revving S/C concept, with the turbo feeding the S/C.

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It's not new technology though....in WW2 Junkers tried the same with the Jumo engine - which was supercharged as standard. They couldn't get a turbo to work in conjunction with the S/C so they ended up fitting a NOZ modification - The JU88S flew too high and fast for the Spits to catch it.

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It's not new technology though....in WW2 Junkers tried the same with the Jumo engine - which was supercharged as standard. They couldn't get a turbo to work in conjunction with the S/C so they ended up fitting a NOZ modification - The JU88S flew too high and fast for the Spits to catch it.

Indeed it's not new, in the 80s Lancia used this "twincharger" principle on its Group B Rallye Delta S4.

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