This is a quick video post to show the custom Carb Sync Vacuum Gauge set that I built. Most of the available sets use regular vacuum gauges and an adjustment valve to smooth out the engine ignition pulses. Without this valve, the needles would rapidly jump in time with the engine vacuum from the intake stroke, so it is difficult to take a reading.
Instead of this design, I built a gauge set that uses Glycerin-filled gauges. Glycerin is a thick liquid and fills the entire gauge, which resists the movement of the needle and causes it to move slowly. This action dampens the needle's response to the vacuum pulses, which smooths out and stabilizes the reading.
Where did you place the end of the hose for the intake? Drill a hole in the rubber boot?
ReplyDeleteWhere did you place the end of the hose for the intake? Drill a hole in the rubber boot?
ReplyDeleteThe Mikuni VM series carburetors come with a sealed 5mm threaded hole in the throat. Simply remove the screw and insert the vacuum line tube
Delete