Dash Boost Gauge

[plaganis]

Hi All,

Quick question.

Does anyone know what the figures on the R33 in dash boost gauge stand for? For example, there is -7, 0, +7 and I think its in KPA.

So if you are to convert these figures to psi what is the conversion??

In other words +7 equals what in psi?

Appreciate anyone's help.

Paul.

[paulr33]

mmhg, its been covered a thousand times before

700mmhg is 1 bar which is 14.7psi

[mad082]

700mmhg is 1 bar which is 14.7psi

nearly right.

1 bar = 14.5psi (14.696psi is 1 atmosphere which is 1.01295bar)

700mmhg is 0.93296bar or 13.538psi

new the old physics text book would come in handy 1 day.

[govich]

Millimetres mercury (mmHg) is a measurement of how far mercury moves in a manometer (basically a tube), used as a measurement of pressure differences in engineering. The gauge reads pressure difference between the intake and atmosphere in this case. The reference on your boost gauge reads x100 mmHg, so +7 = 700mmHg, or the pressure in the intake is just under 1 bar above atmospheric, so you're getting around '13.5psi boost' in simplified terms. 1 bar = 760mmHg.

mad082, 1 atm = 101.325kPa = 1.01325 bar so your phys textbook sucks

Edited July 26, 2006 by govich

[plaganis]

Thanks for the replies, more information than I expected, but that's great.

So I can assume that +7 is about 13.5 to 14psi assuming the gauge is working correctly.

Thanks again,

Paul.