just as the title says,i just bought a new autometer boost gauge and now it says 17-18 vac on idle. is this normal with autometer or that?

 

i have an autometer boost gauge and it reads about 20 so i would say your in the normal range.....

 

u have any cams in the motor? with type R cams im idling at like 24 in/Hg. it should be idling higher than 17. whats ur compression ratio

 

stock z6 specs, and i did a crappy valve adjustment a day or twp ago

 

well theres ur answer. redo the valve lash and it should come back up

 

what happens when its reading 10 in/hg....becuase mine is ready at 10 in/hg...id checked everything...did a compresson test(which is good),check for leaks(nothing leaking),change plugs,put new gasket on throttle body,and IM...it was reading 20-23 in/hg bout couple of days ago...havn't drove or touch the car since...

 

10 u have a leak somewhere keep lookin
mine is at 20 to 21

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Quad-Damage &raquo;</TD></TR><TR><TD CLASS="quote">10 u have a leak somewhere keep lookin
mine is at 20 to 21</TD></TR></TABLE>

yea...id checked it for 3 days now and found nothing...im out if idea where to find the problem...im bout to blow it up...

 

whats the best range to be in vac in

 

Higher = smoother idle and better running power brakes, lower is the opposite. Vaccum at idle is directly related to cam duration (read: overlap) engine displacement, and compression ratio. Higher makes for a smoother running motor. There is no "best range".

 

i have a z6 with faze boost gauge and it reads 22 at idle.

 

My gsr motor with 9:1 cr idles at 17-18.

Adriano

 

my stock b18b with 170k miles reads 22-24 inHg on my defi boost gauge.

 

What do you think it should be if you have 8:5:1 compression?

 

20-22 here