What exactly does "in-hg" mean on a boost gauge?
 

I know it's vaccuum, but I'm wondering what the technical term is for it.

Thanks!

Re: What exactly does "in-hg" mean on a boost gauge? (KooK)
 

inches mercury.

Re: What exactly does "in-hg" mean on a boost gauge? (KooK)
 

For those who want a bit more info, 2in/hg is close to 1psi, except psi is usually for pressure and in/hg for vacuum, hence the mixed units on gauges. 28in/hg is basicly absolute vacuum, which is why high rpm decel gets close to that.

Re: What exactly does "in-hg" mean on a boost gauge? (wade)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wade &raquo;</TD></TR><TR><TD CLASS="quote">inches mercury.</TD></TR></TABLE>

You're the second guy who has told me that now, I'm starting to get confused damnit. Why in the hell would they say inches mercury.

Re: What exactly does "in-hg" mean on a boost gauge? (KooK)
 

read the other post and it explains it. unless your IQ is like 21

Re: What exactly does "in-hg" mean on a boost gauge? (wade)
 

^^Hey now, you're the one from Kentucky!


sike https://honda-tech.com/forums/images...s/emsmilep.gif

Re: What exactly does "in-hg" mean on a boost gauge? (KooK)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KooK &raquo;</TD></TR><TR><TD CLASS="quote">

You're the second guy who has told me that now, I'm starting to get confused damnit. Why in the hell would they say inches mercury.</TD></TR></TABLE>

Looks like science wasn't your best subject.

Pressure can be measured in many ways. BAR, psi, and in-hg.

Inches mercury, "in-hg", is a unit of pressure equal to one inch of mercury rise in a barometer.

Re: What exactly does "in-hg" mean on a boost gauge? (Finest)
 

Re: What exactly does "in-hg" mean on a boost gauge? (HamiltonRex)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HamiltonRex &raquo;</TD></TR><TR><TD CLASS="quote">say at idle.. when warm 800rpm's what would be a good healty value for a stock gsr boosted 'in-hg'?</TD></TR></TABLE>

Mid 20's in Hg.