Choosing a Vacuum Gauge
Choosing a Vacuum Gauge
Should a vacuum gauge for the K8 be measured between 0-70Hg or else 0-30Hg ?
K8 running LPG (Liquified Petrol Gas)
- Tunes67
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Would be better at the throttle body.. this way its measuring the overall vacuum of all 6 cylinders.. the nipple for the cruise would probably be ok though.. its fairly close to the middle of the intake as well. I have mine going off the throttle body. The gauge will come with a rubber "T" fitting and nylon tubing.. very easy to hook up.
As for that 70Hg gauge.. thats got to be for a big diesel engine.. at least thats my guess LOL
Tunes67
As for that 70Hg gauge.. thats got to be for a big diesel engine.. at least thats my guess LOL
Tunes67
"So long.. and thanks for all the fish!" "Momma says VW Bugs are the devil" "This one time at band camp.. I stuck a flute in my Throttle Body" ![Wink ;)](./images/smilies/icon_wink.gif)
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
![Wink ;)](./images/smilies/icon_wink.gif)
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
- Tunes67
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No.. Vacuum is always measured in Hg which is "Inches of Mercury" Doesnt have anything to do with metric or standard. Since that gauge measures a vacuum upto 76 Hg (inches of mercury) the engine that could produce such a powerful vacuum would have to be large.. like a semi truck diesel engine. And believe it or not.. there are people that race those trucks.. so it wouldnt be all that unusual to find a vacuum gauge for such a application ![Smile :)](./images/smilies/icon_smile.gif)
Tunes67
![Smile :)](./images/smilies/icon_smile.gif)
Tunes67
"So long.. and thanks for all the fish!" "Momma says VW Bugs are the devil" "This one time at band camp.. I stuck a flute in my Throttle Body" ![Wink ;)](./images/smilies/icon_wink.gif)
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
![Wink ;)](./images/smilies/icon_wink.gif)
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
No no... not in theis case!
take a closer look
there's ( cm Hg ) on mine and ( in Hg ) on yours
thats centimeters on one side and inches on the other. "Hg" maybe is for something like hydro gravity, or some Einstein stuff
but, yeah.. those trucks got to suck air like no other vacuum cleaner on earth lol
take a closer look
there's ( cm Hg ) on mine and ( in Hg ) on yours
thats centimeters on one side and inches on the other. "Hg" maybe is for something like hydro gravity, or some Einstein stuff
but, yeah.. those trucks got to suck air like no other vacuum cleaner on earth lol
K8 running LPG (Liquified Petrol Gas)
- Tunes67
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Your right.. that gauge does measure in centimeters of mercury (Hg is the atomic symbol of mercury - Dunno why.. you'd think it would have an M in it somewhere).
I have never seen a gauge that measures in centimeters of mercury before.. weird. But ok.. I wouldnt know what to tell you on how it should read though LOL If you have a In Hg gauge.. you should be riding at 18 in Hg at idle with no needle fluctuation
Needle fluctuation will be a indicator that you have one or more valves not seating/sealing properly. ![Smile :)](./images/smilies/icon_smile.gif)
Tunes67
I have never seen a gauge that measures in centimeters of mercury before.. weird. But ok.. I wouldnt know what to tell you on how it should read though LOL If you have a In Hg gauge.. you should be riding at 18 in Hg at idle with no needle fluctuation
![Smile :)](./images/smilies/icon_smile.gif)
![Smile :)](./images/smilies/icon_smile.gif)
Tunes67
"So long.. and thanks for all the fish!" "Momma says VW Bugs are the devil" "This one time at band camp.. I stuck a flute in my Throttle Body" ![Wink ;)](./images/smilies/icon_wink.gif)
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
![Wink ;)](./images/smilies/icon_wink.gif)
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
Yeah I found this gauge would be a good health indicator for the motor.
Allready got this picture document for reading the gauge:
http://www.classictruckshop.com/clubs/e ... ac/uum.htm
And yeah... I'm willling to buy one of those inches scale so we can discuss numbers more easily![Cool 8)](./images/smilies/icon_cool.gif)
Allready got this picture document for reading the gauge:
http://www.classictruckshop.com/clubs/e ... ac/uum.htm
And yeah... I'm willling to buy one of those inches scale so we can discuss numbers more easily
![Cool 8)](./images/smilies/icon_cool.gif)
K8 running LPG (Liquified Petrol Gas)
- Tunes67
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- Posts: 4708
- Joined: January 27th, 2005, 6:36 pm
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That little gem of a webpage should be in the FAQ section.. excellent diagnostic information and the exact reason I run a Vacuum gauge to begin with ![2 Thumbs Up :2thumbsup:](./images/smilies/2thumbsup.gif)
Tunes67
![2 Thumbs Up :2thumbsup:](./images/smilies/2thumbsup.gif)
Tunes67
"So long.. and thanks for all the fish!" "Momma says VW Bugs are the devil" "This one time at band camp.. I stuck a flute in my Throttle Body" ![Wink ;)](./images/smilies/icon_wink.gif)
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
![Wink ;)](./images/smilies/icon_wink.gif)
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL