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  Topic Review (Newest First)
01-24-2011 10:10 PM
sea_hunter The Balmar twin post does fit on the 108, but needs a pretty skookum mounting bracket (custom) and the right pulley (call Balmar). We use a 210A twin post 94 series on a 154.
08-31-2010 01:42 PM
oceanscapt @e37duff - I'd be interested in the model # of the alternator you select. I've got the 4-108 as well.
08-31-2010 01:36 PM
svHyLyte Our alternator is 120 Amp which is no longer available. Today they are 140, 160 and higher amperages. We manage ours with an AR-5 3-stage External Regulator. As a practical matter, with a single belt, I don't think any alternator really produces its advertised capacity but ours has been very satisfactory anyway ("knock on wood" eh?).

See Tuff Stuff Silver Bullet Alternators -

08-31-2010 11:55 AM
e37duff what amp rating is this silver bullet alt? im trying to find a high output alt that i can control with 3 stage charging so as to minimize engine run times while cruising.
08-31-2010 11:52 AM
e37duff thank you very much for the response. this is exactly what i need to here. im doing my reaserch. is there anyway you could get me in touch with your friend with the perkins. i can pm you my email address.
08-31-2010 07:47 AM
Originally Posted by e37duff View Post
anyone put a balmar alt on their perkings 4-108. ive got the 37 and the alt that is on there now is terrible.
Friends of ours with the same boat we have--a Beneteau F-42 with a Perkins 4-108--installed a Balmar. Unfortunately, they went through a couple before they finally got one without problems. Based upon their experience, it would seem that Balmar may be somewhat over rated. By comparison, we have a "Silver Bullet" truck alternator that has been working reliably for 14 years and is far less costly.

08-01-2010 11:43 AM
balmar alt

anyone put a balmar alt on their perkings 4-108. ive got the 37 and the alt that is on there now is terrible.

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