1970 johnson 60 hp adding regulator????

[johnnybass]

So i have a question that i hope some of the experts will chime in and help me out with.
Anyway i just replaced the amplifier and coil with new units from CDI , and am curious as to weather or not there is a way to upgrade to a regulator instead of the simple rectifier that I have. when I talked to CDI they didn't really like that I was using a walmart battery and recommended changing it . but i was just wondering if I could upgrade to a rectifier/regulator, and keep the walmart battery.

 

[Barnacle_Bill]

Re: 1970 johnson 60 hp adding regulator????

http://www.mfgsupply.com/m/c/01-090-1.html

 

[boobie]

Re: 1970 johnson 60 hp adding regulator????

bhile, if that regulator that's on the site you posted above works, it's a good deal.

 

[boobie]

Re: 1970 johnson 60 hp adding regulator????

johnnybass, did CDI say why you shouldn't use a walmart battery??

 

[johnnybass]

Re: 1970 johnson 60 hp adding regulator????

they said that with a lower quality battery what can happen is that at high rpms the motor will send 16+ volts to it , and with a lesser quality battery like that it could also send that 16 volts back to the CDI unit which would be to much for it and could end up blowing it. It is just a simple matter of the build quality of the battery, they couldn't endorse any brand of battery just suggested buying the ones with the green top, i am assuming these would be interstate.And as far as the link posted for that rectifier/regulator that is the same one i have on order and will be installing and testing as soon as i get it. i did get a chance to test the boat out on the water and did have someone else driving it and was able to see how high the voltage output is at higher rpm's and it was 15.8 at less than full throttle this would be bad for the battery and i am glad i am switching over to a rectifier/regulator unit that should regulate the voltage to 14.5 it just seems like a safer overall solution , than just getting a better battery.

 

[jayyyy]

Re: 1970 johnson 60 hp adding regulator????

I have installed a regulated charging system on that motor. I did it using OMC parts, a 15 amp stator,15 amp regulator and a 15 amp rectifier. It was expensive and in the long run not worth it. You have an electro-hydrolic shift (push button) lower unit and a CDI with points and a single coil these are weak links,. Currently you have an unregulated 6amp charging system that also provides current for the ignition. If you run the motor for long periods with no battery discharge (lights,stereo on) etc. you could spike the battery voltage. With a good battery and the low charging rate you have its unlikely. Install a dash mounted volt meter and if voltage gets over 15v turn on the stereo or a light etc. The person that recommended not using a walmart battery was close but no cigar. A WET CELL deep cycle battery has a greater capacity to absorb higher voltage without damage, so a walmart wet cell deep cycle battery will be fine.If you want to spend money on a regulated charging system I bought the parts from Seaway marine in Washington a long time ago and it cost $350. Good luck whatever you decide.

 

[jayyyy]

Re: 1970 johnson 60 hp adding regulator????

I have installed a regulated charging system on that motor. I did it using OMC parts, a 15amp stator,15 amp regulator and a 15amp rectifier. It was expensive and in the long run not worth it. You have an electro-hydrolic shift (push button) lower unit and a CDI with points and a single coil these are week links,. Currently you have an unregulated 6amp charging system that also provides current for the ignition. If you run the motor for long periods with no battery discharge (lights,stereo on) etc. you could spike the battery voltage. With a good battery and the low charging rate you have its unlikely. Install a dash mounted volt meter and if voltage gets over 15v turn on the stereo or a light etc. The person that recommended not using a walmart battery was close but no cigar. A WET CELL deep cycle battery has a greater capacity to absorb higher voltage without damage, so a walmart wet cell deep cycle battery will be fine.If you want to spend money on a regulated charging system I bought the parts from Seaway marine in Washington a long time ago and it cost $350. Good luck whatever you decide.

 

[johnnybass]

Re: 1970 johnson 60 hp adding regulator????

I know with this motor it is kinda like beating a dead horse, but I have put a lot into getting the boat the way I like it and don't really want to over invest on what started out as a 100 dollar boat,it has never had any gauge's at all and the only electronic device I run is a fish finder ,I use the boat for fishing and just relaxing and as a working musician I don't really need to hear any more music so adding a stereo isn't going to happen . My goal is just to hopefully have a few more trouble free years out of this engine. I am almost to where I want it to be on the reliability scale just don't want to blow another amplifier. After reading a lot of post's on blown amplifiers being a problem I just want to protect my recent CDI amplifier,thanks for all the help and I will post results with the new rectifier/regulator

 

[boobie]

Re: 1970 johnson 60 hp adding regulator????

If it hasn't been done yet, remove what they called the "clipper circuit" on it. After that keep your battery connections good, clean and tight on both the battery and the mtr. This will also help your amplifier.

 

[johnnybass]

Re: 1970 johnson 60 hp adding regulator????

well everything is good to go at this point, i replaced the amplifier with a CDI unit along with coil, rebuilt the carbs , and removed the clipper , and went with the universal snowmobile, atv rectifier/regulator. i am getting no more than 14.5 volts regulated at higher throttle positions and she is running like a scared rabbit. I think this rectifier regulator will save the battery and amplifer from any damage. this is the unit I used http://www.fullthrottletahoe.com/fu...ages/catalog-specs/09SnowPages/09Snow 243.pdf