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Howdy all,
to protect the supercharger rotors and airbox in my new intake system I am going to need a huge dump valve or flap.
When and if it backfires the overpressurised gas needs to be vented.

Any ideas on where i would get something like that??
anyone got an old diesel turbo with a big wastegate I can use?

Lateral thinking and improvisation is encouaged here.

I am thinking of running 6-8psi as operating pressure, so this would need to vent at 10 or 12 psi.

Cheeers.
Matt

The manifold of early Nissan turbo motors (inc RB30 skyline motors) has a 12psi dump valve to protect against overboost. Looks like a blow off valve without the manifold vacuum hose.

Perfect, Cheers Ben.
I will look into one of them.