Twin S/C??

[SDKmann]

Is there such thing as a twin supercharged car? I know there are turboed and S/Ced cars and TT cars but Ive never heard of a twin S/C car.

[1996 328ti]

There is a twin screw supercharger.

[AlaskaBlue]

There are twin supercharged cars such as the e39 M5.

[pdxmotorhead]

Most of the time its easier to use a bigger SC than try and plumb and manage two of them, Twin turbo's are used to make them respond quicker or for sequenced turbo's not really because of more air flow.

There are systems that use a Turbo to feed an SC. (P51 Merlin/Allison V12 engines ....)

Dave

[mss318ti]

I have heard of twin supercharged cars but mainly only when a centrifugal supercharger is used and only so that you can retain the stock manifold and just plumb into it like Alaskablue mentioned about the E39 M5. I have seen a couple of dual twin screw supercharger setups and 1 or 2 roots setups but they were on race boat engines if I remember. The main reason like pdxmotorhead mentioned is because its easier if you build a manifold or if you can find a large portion of empty space somewhere to mount a larger one. Also using a larger charger other two smaller ones also is well cheaper to do most of the time. Finally I would say there would be a larger amount of parasitic loss if you had to use dual superchargers over a larger unit, I could be off with this because I have never looked at using more than one supercharger, on the other hand a turbo feeding supercharger is something that I look forward to working on!

Greg Scrivner
SEAM
OEM & Performance BMW Parts

[pdxmotorhead]

If I recall there was either a Buggatti or a Aston that had a SC for low revs and it transitioned to turbo at high revs, the engine management was wayyyy out there... the jump from the blower to the turbo was on the order of 200RWH, Then it built boost. or depending on your adrenalyn levels...

Dave

[Variance]

Twin-charging (turbo+SC) is pretty cool. Lancia used it with great success in their rally cars and the Delta Integrale, back in the day.