[C320-list] Alternator change

[Danny Jensen]

Here is my project in detail. I went with a balmar 6 series with the balmar 614. The max size you can go with the stock pulls on the 3gm30f is 100amp. I have had advise no to put more load on the water pump and crank than the 100amp. The 100amp is a tight fit as is. Better to have balmar reg and alt when/if you have issues. Be careful when placing the reg. Read my project notes for placement. Read Jeff Hares comments in this group along with others past comments. 

https://c320.org/mediagallery/media.php?s=20131123103829329


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> On Jul 16, 2018, at 6:50 AM, Scott Westwood <scottwestwood at bellsouth.net> wrote:
> 
> Well it is decided that we will end up with a new alternator, Regulator, Monitor, and AGM batteries. Going for it.
> We have a Yanmar 3GM30F
> First the Alternator (before I call Mfg):
> 1. If I go over 100 amp (Maybe Amptech??) will I need to change all the other pulleys?  I am not near the boat so I don't know the current belt size.  Can the other parts handle it?  Nothing else to change?
> 2. If you plan to have an external regulator MUST you have an alternator that is listed as "external regulated" or can/should you go ahead and have an alternator that is also internally regulated?  Not sure if it is one or the other but can't do both??
> 
> Second the Regulator:
> 1.  Is the Balmar MC 614 an option?  Any other models I can look at?  Can this model handle the above Alternator (maybe 100-125 amp Alt)?  There is a comment about this model about (15 amp field current)??
> 
> That's it for now, anyway.  Have to run. 
> Thanks,
> Scott Westwood scottwestwood at bellsouth.net H (919)-362-8538    C (919)-618-7185