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Turbo Plenum bits?


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Hi Lotus Fans,

I would be grateful if someone could explain the purpose of the gadget on the side of the plenum on the Dellorto turbo'd engine?

It appears that when boost pressure is in the plenum,it goes into the adaptor were a piston is,on a spring.



post-3024-029149900 1284120220.jpg

post-3024-053509200 1284120229.jpg

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...which is sitting on top of a dump valve.

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...which is sitting on top of a dump valve.

That's the baby,thanks Bibs. Thanks Jon,the second picture did throw some confusion,the rising rate FR I'm aquainted with. The plenum won't be any use with the Ford Pinto manifold,the carbs need to sit closer to each other :(

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