Anyone know of MOSFET Rec/Reg installed on an outboard?

[astrodude]

I have a 88 Merc 175hp. Recently have trouble with the Rec/Reg and considering replacing one. Rather than spending 700 dollars on an OEM or 800 on a CDI replacement kit, I found this MOSFET rec/reg used on bikes. They are the newest technology with less heat and stable output and never burn the stator. Just wondering if anyone has knowledge about doing this on a boat motor.
Besides, if I do go this way, there won’t be a grey tach wire. Can I T off the yellow wire from stator? Any wrong with that?

 

[Chris1956]

You can tee off the yellow wire for the tachometer.

Does that VR have the capacity for the charging system of your motor. You should make sure, I know the later models have dual 20A VRs. I think the older models were less amperage, although some were single 40A VRs..

 

[astrodude]

You can tee off the yellow wire for the tachometer.

Does that VR have the capacity for the charging system of your motor. You should make sure, I know the later models have dual 20A VRs. I think the older models were less amperage, although some were single 40A VRs..

Thanks for your valued input. Yes, mine is single water cooled 40A VR which is a bad design. Merc changed it to a dual VRs in later motors. The MOSFET R/R I was looking has a capacity of 50Amp so I think I should be ok.

 

[Chris1956]

Is it potted? If not it may not hold up to the corrosion inherent to the environment.

 

[astrodude]

Is it potted? If not it may not hold up to the corrosion inherent to the environment.

It looks like this. Seems pretty solid. It’s commonly used in top performance race bikes and cars

 

[Chris1956]

Looks pretty good. The original was fastened to the cooling water jacket to help keep it cool. I would recommend the same.

 

[astrodude]

Looks pretty good. The original was fastened to the cooling water jacket to help keep it cool. I would recommend the same.

As I was reading the spec, this one generates way less heat and air cooled but I will again find a way to keep it cool

 

[astrodude]

Looks pretty good. The original was fastened to the cooling water jacket to help keep it cool. I would recommend the same.

And I forgot to mention it has a auto shut off function when over heat

 

[dingbat]

As I was reading the spec, this one generates way less heat

Not sure how that works since regulators work by dissipating excess current as heat.