What tach to use - 12 or 20 poles?

[imported_rick]

What kind of tach can I hook up to my 1980 115hp Chrysler, 12 or 20 poles?

Would I just connect the pulse lead to one of the AC leads from the stator?

I replaced the ignition module with one from CDI (115-3301) and I also replaced the regulator/rectifier with a rectifier from Radio Shack.

After a few years of working on this boat, new floor, stringers, powerhead etc., on Sunday I started the motor for the first time! Weehoo!!

TIA,
Rick

 

[thompy]

Re: What tach to use - 12 or 20 poles?

does it have a distributer if yes thes use a 12 pole, the forces ran the 20 as far as i know

 

[Barnacle_Bill]

Re: What tach to use - 12 or 20 poles?

Only the 55 and 65 HP Chryslers used a 20 pole stator.

 

[imported_rick]

Re: What tach to use - 12 or 20 poles?

Yes, it does have a distributor. Thanks for the info guys.

 

[SweeperForce]

Re: What tach to use - 12 or 20 poles?

Becareful with that rectifer. I bought one from RS also and the voltage kept climbing well past 16 volts. Might boil your batteries. you probaly be better offwith a regulator witrh a rectifier inside.

Tom

 

[imported_rick]

Re: What tach to use - 12 or 20 poles?

Thanks Sweeper, I'll keep an eye on the voltage.