9 amp to 16 amp stator overcharging

[cam1399]

Finally getting everything worked out on this motor. Stator was bad and thought it was the 16 amp stator but turns out it was a 9 amp. My engine only has the small square rectifier. It is overcharging the battery. Maxed out the gauge at 16 volts. I don’t want to burn anything up. Can I add a regulator or different rectifier to match the 16 amps? Thanks for all the help

 

[boscoe99]

Is the model of the motor not known?

 

[cam1399]

Sorry mercury black max 150. 1984

 

[Dukedog]

part # 88825A7... if it still over charges try new rectifier.

 

[cam1399]

Thanks. I tried a used one off eBay similar to this one but it didn’t have the 2nd red wire

 

[cam1399]

is this a rectifier/regulator or do I still need my small square rectifier?

 

[cam1399]

 

[cam1399]

This what I need?

 

[Dukedog]

thats a 20 amp reg/rectifier combined.... they are used a lot on tha older stuff from what i hear....

 

[Dukedog]

we ran 16 amp stuff on our junk without a reg for many years without a problem... replaced a few rectifiers though................

 

[cam1399]

20 amp should work? 16 amps without regulator didn’t damage battery or anything by overcharging?

 

[Dukedog]

never did it with us... had a very good battery program and a coupla things (big fuel pump, tunes and such) that would pull a few amps almost all tha time tha key was on

 

[cam1399]

Gotcha. May try and run it like it is and keep an eye on it

 

[Dukedog]

Gotcha. May try and run it like it is and keep an eye on it

 

[1960 Starflite]

I kept boiling the battery with my 1975 850 Merc. Voltage gauge was running at 17 anywhere above half throttle. Installed a 6 wire regulator, voltage now steady at 14.5v. You'll have to get creative with mounting.

 

[cam1399]

 

[cam1399]

6 wire like this one?

 

[1960 Starflite]

View attachment 402718

Yes, there are many vendors for that type. I don't remember the part # but I ordered from Amazon