Turbo bypass valves (Forge Valve)

[josh Wyte]

I've been running a K04 turbo at 20psi (peak boost)
for the last 20k miles on the stock bypass valve with
no problems at all.

I found that the inlets/outlets of the Forge valve
were a little large for the stock hoses.  You can
stretch the stock hoses over the Forge valve and fit
it, but over time they'll fatigue and split there...

-josh


--- Charlie Smith <charlie at elektro.cmhnet.org> wrote:
> Earlier, josh Wyte wrote:
> > 
> > On the Audi's, the stock bypass valve actually
> holds
> > together quite well.  
> > 
> > I replaced mine with a Forge and noticed no
> difference
> > whatsoever.  So I took the Forge out (which didn't
> fit
> > very well, btw) and put the stock one back in.  I
> have
> > 60k trouble free miles on the stock one.
> > 
> > You can get a new stock one for $31, vs the $130+
> that
> > the aftermarket ones cost...
> 
> Yup, the stock bypass valve works fine.  But it
> doesn't always
> last very long, I think particularily with high
> boost.  When you 
> noticed no difference, that just means yours was
> still working OK.
> At 60K miles, mine was not working OK.
> 
> I just called Forge, and found the differences in
> the 1.8T and the 2.7tt
> versions.  First, I have the 1.8T version installed,
> and it fits fine on
> my 1995 S6.
> 
> The valve for the 2.7tt is a bit more compact to fit
> that car.  The top
> on the 1.8T model is held together with allen bolts,
> the top in the 
> 2.7tt model is threaded and screws together like a
> bottle cap so it 
> is a bit smaller on the outside dimensions.  I
> didn't ask them about
> the inner piston diamer of the two models, so I
> don't know if it's 
> the same.
> 
>     - Charlie
> 


=====
Josh Wyte 
Momentum Motorsports
508-833-3024 After 5 pm EST

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