Bayliner speedometer

[The Force power]

I was searching for some answers regarding the speedometer & their readings.
I can't find back the old post where Scott (I believe) posted **PSI = ** MPH

I'm trying to figure out how to calibrate / verify the needle's position

 

[mr 88]

GPS on cell is the best way to check how far off your dash unit is. Do not think you can calibrate them.

 

[The Force power]

Yeah...I've read that, I needed the old post;so I can bench-test the gauge.

I found the old post;
test the gauge using air pressure: 5.6 PSI = 20 MPH; 12.6 PSI = 30 MPH; 22.4 PSI = 40 MPH; and 35 PSI = 50 MPH.

 

[tpenfield]

Here you go . . .

http://forums.iboats.com/forum/engine-repair-and-maintenance/mercruiser-i-o-inboard-engines-outdrives/10770754-speedometer-not-consistently-working?p=10770843#post10770843

 

[The Force power]

Here you go . . .

http://forums.iboats.com/forum/engine-repair-and-maintenance/mercruiser-i-o-inboard-engines-outdrives/10770754-speedometer-not-consistently-working?p=10770843#post10770843

Thank you, that was the one :rockon: