As title peeps....

Stumbled across an American forum where they were on about mainly Pre compressor throttles on 80's F1 cars. I know renault di this with the Group B 5 Maxi too.
One fella was on about how he'd put the throttle body before the inlet to his turbo (I suppose like a draw through carb installation) and how responsive it made the engine as there was no need to run a dump valve because between gear changes the compressor wheel would be spinning unloaded in a vacuum (throttle shut) thus keeping its speed up ready for when you get back on the throttle, and no need to dump any compressed air.

http://forums.autosport.com/printthr...threadid=78714

Any thoughts? could you do this with say a T34 turbo or would the vac suck oil past the seat and into the inlet?