bypass valve

[Peter Berrevoets]

FWIW

http://www.dahlbackracing.se/galleri/rs2/pic7.jpg

Here's the link to the dahlback rs2 with dual bosch bypass valves.
Interesting setup in that they went ot a lot of work to fit them in as a
pair.

I just noticed that these valves are in the wrong way. I wonder if that's
why they are failing. High pressure comes in from the side of the valve, not
the bottom (see SJM on bypass diagram) If the high pressure comes in
directly opposite the vaccuum hose (ie botttom of valve) it's easy to see
why it fails.

Hmmmmm... It would appear dahlback has screwed up!

Later.

Peter Berrevoets
1990 200TQ
Toronto, Canada

> >
> >
> ><< Perhaps there is some merit to using the Bosch valve. I
> >know they make good
> >products, is it perhaps the method of deployment that is in need of
> >modifying rather than blaming the valve itself?
> >my $0.02>>
> >
> >   No, there are no good merits to the stock valves aside
> >from low cost...they are plastic and rubber, junk for the
> >most part and have no place in the volotile engine
> >compartment of a turbo engine...I am using a Forge valve,
> >solid billet aluminum with a solid Delrin piston instead of
> >a diaphram, it is totally bullet proof and will last
> >forever...it cost a whole $135.
> >Javad
> >
> >