[s-cars] Boost leak - update, what am I missing here?

[Theodore Chen]

scott,

i have to agree with calvin here.

when i disconnected my WGFV hose (as opposed to disconnecting the
electrical connector from the WGFV, which would allow the WG to see
full boost from the turbo and open the WG early), i got 22-24 psi of
boost.

that's how i concluded that my WGFV was not doing its job.  in his
case, it made no difference.  i think his candidates are the WG, the
cats, or turbo.

-teddy

--- QSHIPQ at aol.com wrote:

>  
> No, on the urs4 it works the opposite.  With no WG intervention, the  boost 
> is WG spring pressure only. The valve limits the amount of  boost pressure
> the 
> WG sees.  When it goes bad, it's either slow, or  defaults to open, which 
> means that the maximum boost is the WG spring pressure  only.
>  For unlimited boost (ala 5kt cars of the 80's) you put the WGFV and  
> pressure to the top of the WG.
>  
> Scott J
>  
>  
> In a message dated 4/21/2007 5:36:46 P.M. Central Standard Time,  
> calvinlc at earthlink.net writes:
> 
> On test  #4, if you removed the input line to the wastegate you should have
> seen  basically unlimited boost if you kept your foot in it, if I am 
> thinking
> about it right.  If you did not see tons of boost with that  hose
> disconnected I think you may have a turbo problem or a massive  leak.  Am I
> remembering this plumbing right?  I have a tendency  to get mixed up between
> the 10 valves and the 20 valves here as they  reversed the plumbing to the
> WG.
> --Calvin
> 
> 
>  
> 
> 
> 
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