<VV> RE: vacuum advance

[larry@forman.net]

I wonder if we are really talking about inches of H2O, which seems a little more believable.  I did take the gauge and compare it to another
vacuum gauge and they recorded similar values, so the gauge is likely close.

-- Larry


On Fri, 16 Apr 2004 16:47:53 -0400, "srmarti" wrote:
>  Larry Forman (it's his Mity-Vac)
> > >tells me
> > >it should begin to pull in around 9 in.Hg. And showed me how to
> > modify it if
> > >it began to pull in below that. This Vac. Adv. begins pulling in
> > at approx.
> > >20-22 in. Hg. and is fully in at approx. 40 in.Hg.
> 
> For what it's worth, standard barometric pressure is 29.92 in.Hg.  It varies
> with altitude and weather a little.  Unless you are checking in a
> pressurized environment it's not possible to produce 40 in.Hg. vacuum.
> Gauge must be off.
> 
> Steve Marti
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Larry Forman