what kind of tach

[Crestliner08]

A tach will tell you a lot of things. First off, your engine manual will tell you the optimum rpm's for your engine, which you should never try to exceed. Then, by adjusting your prop pitch, the angle of the engine to the transom and height of the engine (ideally the cavitation plate should line up with the deepest - lowest - centerline of the transom), you can get the highest mph (use a GPS) and performance out of your rig. It's called "tricking out" your rig. That also improves fuel economy as well. Win-Win.

[Cane Pole]

I spent a small fortune getting a 2 inch tach to work with my 30hp Merc. What a pain and there ain't much help on Google. Plus, the help is worthless help on Google.


Good luck.

[rocket rich]

just ordered that penny tack 13.27 my other one a tiny tach shot craps after 4 months

[rocket rich]

I think that 1 on the tiny tack is for 2 cycle motor while 3 is for 4 strokers at least that's what I use

[rocket rich]

Tom try I Boats with those guys are factory guys