Re: Turbo Frequency Valve Check

[EICHSTEV@aol.com]

> My understanding of how the frequency valve 
> works is that it pulses boost to the bottom of the wastegate, causing the
WG 
> to open - obviously if you pulse too often, the WG will be open too much
and 
> boost will not build.

Actually, the WG freq. valve on the 3B _blocks_ boost pressure from the
bottom of the WG, that's why they have relatively weak springs yet produce
alot of boost.  When the freq. valve fails, the boost pressure is always on
the WG (as on the MC turbos) and boost pressure is low.  

This setup might be fun on an MC engine...  :)

Steve Eiche
Lakewood, CO
'82 Not So Ur q 3B2B