urquattro20Vt

Rather than piggybacking the recent compression thread - thought I'd just start a new one-
So - for those with mechanical vacuum/boost gauges - how much vacuum does your engine pull at idle - and at what RPM?

Just curious...

Black_Hat

what unit of measure ?

Black_Hat

found my log files but only for idle

20 to 22 -inHg

Austin is at about 650ft above sea level

you will need to adjust for Colorado

Metal Guru

I'm thinking 13 PSI (correct units?).
I do know it will be a low value compared to most normally aspirated engines owing to the low compression ratio.