[s-cars] By-pass valves

[Thomas R Green]

Good to see we can still count on you for a different slant on things,  
Hap.  : > )   I wonder where Tufty learned that trick?  Probably from  
some United captain that can identify every drain on any Boeing  
product by tasting the drips.

Tom '95 S6
          '95.5 S6 avant

On Thursday August 12, 2010, at 6:23 AM,  Hap Maguire < captmagu at gmail.com 
  > wrote:

> Hey Dennis
>
> I've seen Dave Jones test a bypass valve by sucking on it. He is  
> called Tufty for a very good reason.
>
> Hap, wit dakine Tuftyism not from Evahboost, Maguire
>
>
> On Aug 12, 2010, at 4:10 AM, DGraber460 at aol.com wrote:
>
>>
>> Thanks Scott, Dave, et al;
>> I understand the Bosch Audi OEM's operation pretty well as  
>> described by Dave and Scott.
>> Having said that, my question was, and is, should the OEM plastic  
>> valves open on the bench with vacuum applied to the small control  
>> port? The Forge aluminum valve does, but neither of my OEM plastic  
>> units will, and I hear what seems to be air bleeding by the  
>> diaphragm when vacuum is applied.
>> They have never (at least in my ownership) been installed  
>> backwards, but wondering if they need to replaced and tossed, or if  
>> they are as normal for a stock OEM. I'm guessing from this behavior  
>> that the diaphragm is ruptured and they are toast?
>> TIA
>>
>> Dennis
>> Denver