How do you make a manometer
Thread Starter
Advanced
Joined: Sep 2006
Posts: 69
Likes: 0
How do you make a manometer
I am trying to balance my throttle bodies. I have found several articles that talk about using a manometer and adjusting the idle so that it pulls 6" inches of water but I can not find any articles about how to make the manometer.
Can anyone point me to a post that will help me out?
Thanks,
Obie
Can anyone point me to a post that will help me out?
Thanks,
Obie
Instructor
Joined: Jul 2005
Posts: 246
Likes: 0
Take a board mount a clear hose on the board in the shape of a U. Have one end of the hose go to the connection the other end is open to atmosphere. Fill the hose with some water or windshield washer fluid. Mark where the liquid sits as 0", measure up every inch and make a mark. Pressure will increase the water level in the hose.
Mike
Google U-tube manometer
Mike
Google U-tube manometer
Instructor
Joined: Feb 2007
Posts: 223
Likes: 0
From: Palmer Ma
Melting Slicks
Joined: Nov 1999
Posts: 2,460
Likes: 352
From: Madison Alabama
Check out the Crossfire Injection Vault...I use to visit this site often, and need to start hitting it again. Lots of really good info on all that is the Crossfire.
Good luck!
Good luck!
Thread Starter
Advanced
Joined: Sep 2006
Posts: 69
Likes: 0
You guys are awesome. Thanks a bunch.
It looks like two designs:
Celeryman - This approach is to check one TB at time. I can handle that. First do the rear TB and then the front. The water should move 6" from the starting point.
MN-Brent - This design connects to both TB's. So the water should be even. I will try this approach after I try Celeryman's.
It looks like two designs:
Celeryman - This approach is to check one TB at time. I can handle that. First do the rear TB and then the front. The water should move 6" from the starting point.
MN-Brent - This design connects to both TB's. So the water should be even. I will try this approach after I try Celeryman's.
Le Mans Master
Joined: Apr 2001
Posts: 5,000
Likes: 1
From: Minneapolis, Mn USA
I think if you have one end open to atmosphere, you will suck in all the water into the throttle body and down into the engine = NO GOOD.
You must have the manometer connected across both throttle bodies (there are ports in the rears dedicated to this task) and you are looking to balance the difference between the two.
B...
You must have the manometer connected across both throttle bodies (there are ports in the rears dedicated to this task) and you are looking to balance the difference between the two.
B...
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Instructor
Joined: Jul 2005
Posts: 246
Likes: 0
I think if you have one end open to atmosphere, you will suck in all the water into the throttle body and down into the engine = NO GOOD.
You must have the manometer connected across both throttle bodies (there are ports in the rears dedicated to this task) and you are looking to balance the difference between the two.
B...
You must have the manometer connected across both throttle bodies (there are ports in the rears dedicated to this task) and you are looking to balance the difference between the two.
B...
Brent may be right, I have never tried a manometer with vacuum. However, if the manometer is tall enough and the TB only sucks 6" of water then in theory as long as the tube connected to the TB was atleast 6" above the water level it shouldn't get sucked in right???
Mike
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
dwyer makes all sorts; theirs been goldstd for decades ... i.e. superflow flowbench ships w/ dwyer
http://www.dwyer-inst.com/htdocs/pre...troduction.cfm
http://www.dwyer-inst.com/htdocs/pre...troduction.cfm
Thread Starter
Advanced
Joined: Sep 2006
Posts: 69
Likes: 0
I balanced them today. You do it both ways. Each throttle body is balanced to 6" difference with the line open to the atmosphere. It does not suck the water out if you connect to the Middle vacuum connection on the TB.
Then you connect the manometer to both at the same time. Then it should be level.
It is a rather cool exercise.
Thank you all for helping me out.
Obie
Then you connect the manometer to both at the same time. Then it should be level.
It is a rather cool exercise.
Thank you all for helping me out.
Obie
Instructor
Joined: Nov 2005
Posts: 129
Likes: 1
From: Plano Texas
Guess I missed this thread.
Glad to hear you got it sorted out.
FYI for the future, heres the stuff your looking for:
http://www.thecubestudio.com/Crossfi...estoration.htm
http://www.thecubestudio.com/Crossfi...tManometer.htm
http://www.thecubestudio.com/Crossfi...yBalancing.htm
Glad to hear you got it sorted out.
FYI for the future, heres the stuff your looking for:
http://www.thecubestudio.com/Crossfi...estoration.htm
http://www.thecubestudio.com/Crossfi...tManometer.htm
http://www.thecubestudio.com/Crossfi...yBalancing.htm
Melting Slicks
Joined: Nov 1999
Posts: 2,460
Likes: 352
From: Madison Alabama
Simpson36 - your website/pictures are a great source~ right click, save!BTW, I've been around/working on crossfires since 1997 but never understood the bushing thing until I read your article...learning has occurred! Thanks!
Team Owner
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Guess I missed this thread.
Glad to hear you got it sorted out.
FYI for the future, heres the stuff your looking for:
http://www.thecubestudio.com/Crossfi...estoration.htm
http://www.thecubestudio.com/Crossfi...tManometer.htm
http://www.thecubestudio.com/Crossfi...yBalancing.htm
Glad to hear you got it sorted out.
FYI for the future, heres the stuff your looking for:
http://www.thecubestudio.com/Crossfi...estoration.htm
http://www.thecubestudio.com/Crossfi...tManometer.htm
http://www.thecubestudio.com/Crossfi...yBalancing.htm
