[DML] Re: Turbo PRV.
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[DML] Re: Turbo PRV.

Dump valves (over here we call them blow-off valves) would seem to be
a necessary part of any complete turbo system. There is a thing called
turbo overboost, sort of the opposite of turbo lag where if you
release the throttle at high speeds quickly you can overshoot the
limit on your boost momentaraly and overboost the motor. The blow-off
valve is basically a pressure relief valve set slightly higher than
the boost controller so if the boost should exceed the control's limit
the blow-off valve releases the excess boost pressure. I am guessing
it has not been offered because of cost. IMHO it may be good
insurance, especially if a boost control or a wastegate should stick.
Boost valves can be either a simple pressure relief valve or it can be
controled by a line monitoring the boost pressure.
David Teitelbaum
vin 10757

--- In dmcnews@xxxxxxxxxxxxxxx, Martin Gutkowski <martin@xxxx> wrote:
> Marc Levy wrote:
> >As far as specific answers to your questions (sourcing
> >parts, and such), My plan would be to rebuild your PRV
> >using parts from a Alpine, or maybe even a Venturi. 
> >Those pistons/rings/rods/head gaskets all worked well
> >with forced induction..  Legend had planned on a

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