1.6 bar overboost on MC-2?

[james accordino]

Correct.  It definitely held vac.  I watched the gauge
on the pump often and when I blew the release valve I
heard the air release.  It started earlier this week
very subtly and I didn't realize what it was.  Later
it got worse and when I switched to manifold pressure
on the dash computer, it was really clear.  Very
quickly from 1.3 to 1.6 bar and then bam.  Total
cutoff.  I never experienced this.  Now I know what
it's like.  I also think I really understand why
people become addicted to high boost levels.  It
really jumps when the boost starts to climb.  The
wastegate diaphragm is shot.  Torn.

Jim Accordino

--- Kneale Brownson <knotnook at traverse.com> wrote:
> At 02:57 PM 10/17/2002 -0700, james accordino wrote:
>
> >Yeah, I should have/did know that.  Funny thing is
> I
> >did check the wastegate about 3 weeks ago when
> having
> >high speed/load driveability problems.  Replaced
> lower
> >hose as a precaution.  I was O.K., but not mint.
> Top
> >chamber held 30 in. of vac. for half an hour.  It's
> >the original wastegate diaphragm and it's toast.  I
> am
> >surprised the lower hose looked as good as it did.
>
> Jim, are you saying the diaphragm was OK (held
> vacuum for half an hour)
> three weeks ago but has failed since?
>


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