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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Gas > Atomic 4
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  #1  
Old 07-14-2012
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Atomic 4 Alternator replacement

Is there any alternative to the pretty pricy ones at Moyers ? I thought there was a Delco that was compatible ????
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Old 07-14-2012
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Re: Atomic 4 Alternator replacement

You want an alternator that's ignition protected. Otherwise: Gas fumes + spark = KA-BOOM!. Standard automotive alternators are probably not ignition protected, as gas fume build-up in an automobile engine compartment is unlikely and, even if things do catch fire, you can just get out of the car.

Jim
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Old 07-14-2012
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Re: Atomic 4 Alternator replacement

How about this. Listed for Atomic 4.

Spider Marine Electric Supply, Inc.

Edit: Looks like the link doesn't hold the selection. Just use to menu on the left to find the Atomic 4 selections. Two options - 51 amp Delco for $170 and 37 amp Leece Neville for $185.

Last edited by JimsCAL; 07-15-2012 at 01:21 PM.
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Old 07-14-2012
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Re: Atomic 4 Alternator replacement

I suppose that the stock 35 amp alternator that most A4 engines have is too small for your battery banks?
Have you priced Balmar alternators lately?
The 55 amp alt at MMI starts sounding pretty reasonably priced.
Even the 120 amp one is cheaper then any Balmar.

Good luck finding one that works with the A4 elsewhere.
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Re: Atomic 4 Alternator replacement

The other thing you have to consider is engine load. The A4 is only 30HP engine. Start adding significant alternator load to it and you may find yourself underpowered. ISTR reading of somebody who'd done just that to themselves, back not long after I started reading SN.

But that's something I have to add to The List. I'm sure we'll want more than that 35A alternator if we ever do start cruising.

Jim
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Old 07-14-2012
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Re: Atomic 4 Alternator replacement





Perfect fit OEM FIT IN THE ORIGINAL CASE WHY use anything else

Spider Marine Electric Supply, Inc.

Spider 51 amp unit as thats about all the belt and drive can REALLY handle no MATTER how big somebody else used on there
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Old 07-14-2012
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Re: Atomic 4 Alternator replacement

Quote:
Originally Posted by TBG View Post
Is there any alternative to the pretty pricy ones at Moyers ? I thought there was a Delco that was compatible ????
Take yours to an alternator shop and see what they can do. You might be surprised at how helpful and knowing and reasonably priced some of these guys can be.
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Re: Atomic 4 Alternator replacement

Is this the one you used Tom Mays? NEW Motorola Leece Neville 12v 51 Amp Alternator: Alternators &amp Alternator
Leece Neville is a recognized and respected brand. Listed price is a tad cheaper then MMI but not by much.
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Old 07-14-2012
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Re: Atomic 4 Alternator replacement

I have a 100-amp alternator on my A4, had it rebuilt in Carney, MD for $95 last winter, works like a champ. And, it doesn't load down the engine, even when the entire bank of house batteries are low.

Gary
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Old 07-15-2012
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Re: Atomic 4 Alternator replacement

Had my alternator rebuilt this spring as well, got out for like 105US$...
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