Difference between a manometer and a vacuum gauge? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 4 Old 08-02-2009, 07:36 PM Thread Starter
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Difference between a manometer and a vacuum gauge?

It seems to me that a TB sync could be performed with a vacuum gauge. Am I wrong? If I'm right, what's the benefit of a manometer?

Thanks.

Jim

Wife's '09 DL-650: OEM hand guards - DL-1000 lower cowel - 16t counter sprocket - Givi windscreen - Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system.

My '09 DL-1000: Air box mod w/ K&N air filter - GIPro gear indicator w/ ATRE - integrated comm system - Givi windscreen.
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post #2 of 4 Old 08-02-2009, 07:41 PM
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post #3 of 4 Old 08-02-2009, 08:04 PM
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You can use a vacuum gauge as long as you have two of them and they are balanced to read the same. The goal is to have both throttle bodies with the SAME vacuum. A differential manometer does that by pulling vacuum on both sides of the tube. The side with the higher vacuum will have a higher column of fluid. I use a Motion Pro SyncPro and it isn't differential. All four columns are individual gauges.

Scott Craig - Nashville, TN
Red '06 Suzuki DL650 - Red '07 Honda VFR800 - My Bike Page
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post #4 of 4 Old 08-03-2009, 01:03 AM
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Here's how to build a manometer for dirt cheap. I used auto. tranny fluid because it's red and easy to see, and doesn't bounce around so easily as water. If using water, put some food color in the water to aide seeing the water level. Slow and a bit of a pain to get the tubing filled with the fluid, though, but once it's built, it's done.

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

Steve.
Twin Cities, MN, USA
'18 DL650XT, previously '07 DL650 and others
"With the rights of life, liberty, and the pursuit happiness comes responsibility, to yourself and others. With responsibility comes accountability. Without responsibility, without accountability, we cannot and will not be a free and civilized society."
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