Re: ur-q vacuum brake conversion

["Bruce Bell" <bbell@bbell.com>]

> The only reason you get vacuum in the intake manifokd is
becouse the 
> throtle is shut.  When it is open there is a great drop
in vacuum. 

I agree, the IM provides sufficient vacuum off throttle.

> The same applies for the turbo intake side.  Becouse it
is supplied 
> (with minimal resistance hopefully) with atmospheric
pressure there would 
> probably be not enough vacuum to power the brakes.

The intake prior to the turbo, at least while on throttle,
would have to be at a lower pressure than atmospheric or
there would be no flow. The question is, would that
pressure be low enough relative to atmospheric to help
replenish the vacuum canister.

Bruce