I used to have a tech day at our house every spring. Lots of folks wanted to synchronize carbs or throttle bodies. I used to play a game. I would synch things by ear first, and then attach either my mercury sticks or Twinmax and see how close I got. I occasionally had to readjust the synch at idle but seldom readjusted the synch on the cables.
Originally Posted by twinsig
I am fairly confident I can synch by ear a lot better than I could trying to use two vacuum guages. There are just too many better devices for balance: Carb Stix, Twinmax, Carbtune, Harmonizer, etc.
If I had a use for a vacuum guage for other uses, I'd just get one. They are fairly cheap.
Paul Glaves - "Big Bend", Texas U.S.A
"The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell