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  1. deraffe

    blow through roots charger...why not?

    Orginally the throttle body was located infront of the supercharger (it actually bolts to the rear of the housing/inlet just before the bypas that is located in the housing). I am no so concerned with the by-pass being a fail safe as much as it helping with fuel economy at low vacuume or...
  2. deraffe

    blow through roots charger...why not?

    The by pass is vacuume activated as it comes from the factory. That is why I am using a 5 gen found on most of the GM models as opposed to the earlier ones found on Fords like the thunderbird that have nothing. Did I make things more complicated for myself with this choice?
  3. deraffe

    blow through roots charger...why not?

    OK, thanks for the clairification. I have a Vortex blow off valve that is designed for systems makeing in excess of 2 bar. At a max of 12 psi i should be safe running this. as if i try to turn much more boost out of the supercharger i come close to exceding the rating for the bearings. i am...
  4. deraffe

    blow through roots charger...why not?

    OK, the fuel is still going to go in to the engine in the same spot(s) I am just going to have the charge (if that is what you would call it since there is no boost pressure inside the roots) come out of the supercharger, into the intercooler, then into the ITB's via an airlog. The Dbilas have...
  5. deraffe

    blow through roots charger...why not?

    I have a 1991 BMW 325i with a 2.7lt "stroker" engine (885 casting cyl head, 292 degree cam, long tube headers, 10.2:1 comp,82mm stroke, lightened stock rods, cleaned up intake and exhaust ports/chambers, balanced rotating assembly). The engine is currently running Dbilas 45mm ITB's (individual...

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