Oily cutoff valve

Brett Dikeman brett at cloud9.net
Tue Aug 3 19:31:02 EDT 2004

At 5:00 PM -0400 8/3/04, Kneale Brownson wrote:

>What fails on these things, anyway?

Generally the rubber diaphragm tears on one of the folds inside. 
Bosch has -never- managed to make one that actually lasts, except for 
a supposedly very durable unit used on some Porsche turbos.  They've 
even had to redesign them at least once- units made in the last 6+ 
years have a brass weight to keep them from making a reportedly 
hysterical "hooting" noise that affected early-80's Saab turbos.  I 
think Audi has made it up to J or K on the part number.

When I discussed it with Eli @Shine Racing, he said the Forge valve 
is more expensive, but has a lifetime replacement warranty of some 
sort, and can be disassembled and cleaned.  Nobody (himself included, 
he had a FWD 80 with a 1.8t conversion) has had to have one replaced 
or clean one.

I'm not particularly inclined to replace mine with a Forge unit even 
if that's the case.  I've had pretty good luck with them lasting; 
they only fail for me every 60k or more, even with a chip...and I'm 
not sure I really see myself keeping my 200q20v another hundred plus 
thousand miles.

"They that give up essential liberty to obtain temporary
safety deserve neither liberty nor safety." - Ben Franklin

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