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post #1 of 7 Old 08-01-2010 Thread Starter
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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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post #2 of 7 Old 08-31-2010
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Quote:
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.

FWIW...

"It is not so much for its beauty that the sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
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post #3 of 7 Old 08-31-2010 Thread Starter
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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.
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post #4 of 7 Old 08-31-2010 Thread Starter
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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.
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post #5 of 7 Old 08-31-2010
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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 - SummitRacing.com

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Last edited by svHyLyte; 08-31-2010 at 02:06 PM.
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post #6 of 7 Old 08-31-2010
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@e37duff - I'd be interested in the model # of the alternator you select. I've got the 4-108 as well.

Capt. Douglas Abbott
USCG/MCA IV/C.I./M.I. 500-ton Oceans
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post #7 of 7 Old 01-24-2011
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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.
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