How do you make a manometer

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Apr 28, 2008 | 09:59 PM

hey_obie

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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

Apr 28, 2008 | 10:22 PM

celeryman22

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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

Apr 28, 2008 | 10:22 PM

elevatordude

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From: Palmer Ma

hope this helps

http://www.obairlann.net/reaper/moto...manometer.html

Ray

Apr 28, 2008 | 10:36 PM

llew71BB

Heel & Toe

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From: Sydney

Man-o-meter, sounds like something used to measure your manhood

Apr 28, 2008 | 10:47 PM

2TONE82

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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!

Apr 29, 2008 | 01:07 AM

MN-Brent

Le Mans Master

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From: Minneapolis, Mn USA

check it -simpson36 I believe

Apr 29, 2008 | 05:53 AM

hey_obie

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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.

Apr 29, 2008 | 10:59 AM

MN-Brent

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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...

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Apr 29, 2008 | 05:02 PM

celeryman22

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Quote:

Originally Posted by MN-Brent

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

Apr 29, 2008 | 05:14 PM

#10

Double_0_7

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From: MI

Tape a picture of a naked woman to a ruler.

Apr 29, 2008 | 05:18 PM

#11

jackson

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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

Apr 29, 2008 | 06:20 PM

#12

Dirtbuster1

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From: Ga.

Steve posted a thread on how to build a manometer with instructions. I guess he did not see this one.

Apr 29, 2008 | 09:12 PM

#13

hey_obie

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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

Apr 29, 2008 | 11:30 PM

#14

Sean82

Racer

Joined: Feb 2000

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From: Kelowna, B.C. Canada

remember that from your zero line, you want to read 3" above.
the u in the tubing will be 3" above on one side and 3" below on the other side making a total of 6".

Apr 30, 2008 | 10:56 AM

#15

bluesilver82

Burning Brakes

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From: St Augustine FL

I just bought a digital one and called it done!

May 2, 2008 | 09:21 AM

#16

simpson36

Instructor

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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

May 2, 2008 | 05:22 PM

#17

2TONE82

Melting Slicks

Joined: Nov 1999

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From: Madison Alabama

...double posting again...

May 2, 2008 | 05:23 PM

#18

2TONE82

Melting Slicks

Joined: Nov 1999

Posts: 2,460

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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!