Alternator on V/6 OMC

**skiboater** · 07-19-2020, 12:35 PM

Does anyone make a kit or have a picture of a rear mount or side mount alternator on a v/6 Johnson/ Evinrude?

**H2OPERF** · 07-19-2020, 08:34 PM

I don't think anyone has made a kit for a stock flywheel, most are mounted in the back from a plate bolted where the regulator normally mounts..

**H2OPERF** · 07-19-2020, 09:04 PM

The one I did, most have done the pulley on top... this ones under the flywheel with a 3 rib serpantine.

**skiboater** · 07-19-2020, 11:14 PM

Nice work..... Thank you for sharing.

**powerabout** · 07-20-2020, 03:33 AM

you could use the Power steering pulley?

**skiboater** · 07-20-2020, 07:39 AM

POWERABOUT You have my attention..... HOW?

**powerabout** · 07-20-2020, 08:44 AM

Originally Posted by skiboater

POWERABOUT You have my attention..... HOW?

add the pulley to any stock 35amp flywheel then you just need to mount your alternator

**H2OPERF** · 07-20-2020, 10:12 AM

Those are pretty big in diameter you would have to run a fairly large pulley on the alternator to keep the rpm down, the small 90mm nippondenso alternator are rated at around 15000 rpm max so you will need less than a 3to1 ratio. That would make it easy..

**keefallan** · 07-20-2020, 03:51 PM

What's the advantage of running an alternator on the motor?

**skiboater** · 07-21-2020, 07:48 AM

Advantage for me..... Safety.... I'm afraid of turning a stock flywheel over 7K. I'm trying to convert from carbs to efi.... Need a flywheel, trigger wheel, pulley and a charging system. I'm open to suggestion.

**H2OPERF** · 07-21-2020, 10:13 AM

Ahh you didnt add that bit of info... contact gordon at monty racing he can get you going...

**powerabout** · 07-22-2020, 05:06 AM

Originally Posted by skiboater

Advantage for me..... Safety.... I'm afraid of turning a stock flywheel over 7K. I'm trying to convert from carbs to efi.... Need a flywheel, trigger wheel, pulley and a charging system. I'm open to suggestion.

Well way back when the F1 v8 cfi engine had a race wheel and an alternator that they said was 35 amp?
Not many of them around, the race wheel was black, stator had 4 charge coils, its just what you need.

I would be making my own flywheel, I think Jeff Dunn was doing it by cutting the the hub from a stocker and using the ring gear.
He made the rest.
https://www.screamandfly.com/showthr...ight=jeff+dunn

**MattGreen** · 07-22-2020, 11:24 PM

You may also want to contact Frank Jackson, an OMC enthusiast on here. He has run external alternators with EFI systems for many years with a pulley system he made, the same idea as H2O but attached to an OMC Gold flywheel.

Matt