tach for 1966 500

[diaric]

have a 1966 merc 500 and am having some prop issues, need a tach to see where i'm at. What works with it, where can i get and how many poles do u set it at. I've looked on this site at the tachs, but they don't really give you very much info

 

[Laddies]

Re: tach for 1966 500

A induction tach, a magneto driven tach or if the engine has a alternator a 6 pole alt. driven tach

 

[diaric]

Re: tach for 1966 500

its a magneto on the motor

 

[Laddies]

Re: tach for 1966 500

dairic, in 1966 all 500s where magneto ign. but if the engine has a alternator you may use one the is powered by it, Mercury started that in the 70s

 

[diaric]

Re: tach for 1966 500

there is no alternator, thats y i'm asking what i need for a tach, as i don't have a clue and what i see listed doesn't explain what it works with or not. thanks for the noobie patience

 

[Laddies]

Re: tach for 1966 500

Sorry I guess I misunderstood the question, you need a tach that runs off the magneto most are adjustable and you need one that is adjustable to 4 pulses per revelution. I think teleflex, stewart warner and even some brands that are sold by some automotive stores and catalog companies have them available

 

[ricksrster]

Re: tach for 1966 500

I think the confusion is: Do you have electric start?

 

[diaric]

Re: tach for 1966 500

yes, it has, but would that affect a tach?

 

[ricksrster]

Re: tach for 1966 500

Ok. The tachs at iboats.com and other places will work. You need a tach you can set to 12 pole or 6 pulse. They hook to either yellow wire at your rectifier. instructions are usually included.

 

[diaric]

Re: tach for 1966 500

ok,, thanks muchly