14.7 more or less, or 29.92 Hg or 1013 millibar at standard temperature
and mean sea level.

Could probably be gotten from one of those old center reading boost
gauges with a custom faceplate and calibration.

L.W.(Bill) ------ III proclaimed:
> Normal atmospheric pressure at sea level is about fifteen pounds per
> square inch, which of course not a vacuum, that would be then read in
> inches of mercury. So, sane people would measure that fifteen pounds as
> just ZERO, and use the typical manifold gauge:
> http://www.----------.com/vacuumgauge.jpg KISS
> God Bless America, Bill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Bret Ludwig wrote:
>
>> Exactly what I DO NOT want. I want the gauge to read MANIFOLD
>>PRESSURE. We are at 29.92 inches of mercury at sea level on Planet
>>Earth. I want it calibrated in inches of mercury, NOT pounds per square
>>inch, atmospheres, or kg/cm2. And I want it to read ambient pressure
>>when the engine is off and lower running-on a naturally aspirated
>>engine it will never read higher.

 

You may see another typical day in sunny California, under a
mountain of high pressure: http://www.----------.com/vacuumgauge.jpg Oh
well, it is Summer time, I think I'll go to the beach:
http://www.camzone.com/index.php?cam=scripps ;-)
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Lon wrote:
>
> 14.7 more or less, or 29.92 Hg or 1013 millibar at standard temperature
> and mean sea level.
>
> Could probably be gotten from one of those old center reading boost
> gauges with a custom faceplate and calibration.
>
> L.W.(Bill) ------ III proclaimed:
> > Normal atmospheric pressure at sea level is about fifteen pounds per
> > square inch, which of course not a vacuum, that would be then read in
> > inches of mercury. So, sane people would measure that fifteen pounds as
> > just ZERO, and use the typical manifold gauge:
> > KISS
> > God Bless America, Bill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Bret Ludwig wrote:
> >
> >> Exactly what I DO NOT want. I want the gauge to read MANIFOLD
> >>PRESSURE. We are at 29.92 inches of mercury at sea level on Planet
> >>Earth. I want it calibrated in inches of mercury, NOT pounds per square
> >>inch, atmospheres, or kg/cm2. And I want it to read ambient pressure
> >>when the engine is off and lower running-on a naturally aspirated
> >>engine it will never read higher.

 

You may see another typical day in sunny California, under a
mountain of high pressure: http://www.----------.com/vacuumgauge.jpg Oh
well, it is Summer time, I think I'll go to the beach:
http://www.camzone.com/index.php?cam=scripps ;-)
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Lon wrote:
>
> 14.7 more or less, or 29.92 Hg or 1013 millibar at standard temperature
> and mean sea level.
>
> Could probably be gotten from one of those old center reading boost
> gauges with a custom faceplate and calibration.
>
> L.W.(Bill) ------ III proclaimed:
> > Normal atmospheric pressure at sea level is about fifteen pounds per
> > square inch, which of course not a vacuum, that would be then read in
> > inches of mercury. So, sane people would measure that fifteen pounds as
> > just ZERO, and use the typical manifold gauge:
> > KISS
> > God Bless America, Bill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Bret Ludwig wrote:
> >
> >> Exactly what I DO NOT want. I want the gauge to read MANIFOLD
> >>PRESSURE. We are at 29.92 inches of mercury at sea level on Planet
> >>Earth. I want it calibrated in inches of mercury, NOT pounds per square
> >>inch, atmospheres, or kg/cm2. And I want it to read ambient pressure
> >>when the engine is off and lower running-on a naturally aspirated
> >>engine it will never read higher.

 

You may see another typical day in sunny California, under a
mountain of high pressure: http://www.----------.com/vacuumgauge.jpg Oh
well, it is Summer time, I think I'll go to the beach:
http://www.camzone.com/index.php?cam=scripps ;-)
God Bless America, Bill O|||||||O
mailto:-------------------- http://www.----------.com/

Lon wrote:
>
> 14.7 more or less, or 29.92 Hg or 1013 millibar at standard temperature
> and mean sea level.
>
> Could probably be gotten from one of those old center reading boost
> gauges with a custom faceplate and calibration.
>
> L.W.(Bill) ------ III proclaimed:
> > Normal atmospheric pressure at sea level is about fifteen pounds per
> > square inch, which of course not a vacuum, that would be then read in
> > inches of mercury. So, sane people would measure that fifteen pounds as
> > just ZERO, and use the typical manifold gauge:
> > KISS
> > God Bless America, Bill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Bret Ludwig wrote:
> >
> >> Exactly what I DO NOT want. I want the gauge to read MANIFOLD
> >>PRESSURE. We are at 29.92 inches of mercury at sea level on Planet
> >>Earth. I want it calibrated in inches of mercury, NOT pounds per square
> >>inch, atmospheres, or kg/cm2. And I want it to read ambient pressure
> >>when the engine is off and lower running-on a naturally aspirated
> >>engine it will never read higher.

 

Lon wrote:
> Bret Ludwig proclaimed:
<<snip>>


> Looks like the hot rodders that install absolute pressure gauges tend to
> use aircraft surplus. You could always buy your own sensor and add a
> suitable meter of your choosing for the output.

What with WWII having been sixty-plus years ago, and what with the EPA
***** and the homebuilders and the warbirders, there ARE NO more
surplus manifold pressure gauges. The few survivors are bought up as
core and overhauled and are $400 each. If not OHd the needles will
barely move as the 60 year old grease is now the consistency of stone.

 

Lon wrote:
> Bret Ludwig proclaimed:
<<snip>>


> Looks like the hot rodders that install absolute pressure gauges tend to
> use aircraft surplus. You could always buy your own sensor and add a
> suitable meter of your choosing for the output.

What with WWII having been sixty-plus years ago, and what with the EPA
***** and the homebuilders and the warbirders, there ARE NO more
surplus manifold pressure gauges. The few survivors are bought up as
core and overhauled and are $400 each. If not OHd the needles will
barely move as the 60 year old grease is now the consistency of stone.

 

Lon wrote:
> Bret Ludwig proclaimed:
<<snip>>


> Looks like the hot rodders that install absolute pressure gauges tend to
> use aircraft surplus. You could always buy your own sensor and add a
> suitable meter of your choosing for the output.

What with WWII having been sixty-plus years ago, and what with the EPA
***** and the homebuilders and the warbirders, there ARE NO more
surplus manifold pressure gauges. The few survivors are bought up as
core and overhauled and are $400 each. If not OHd the needles will
barely move as the 60 year old grease is now the consistency of stone.