Water Proofing, or Water proof Alternators? - JeepForum.com
 
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post #1 of 6 Old 06-11-2003, 07:20 AM Thread Starter
DaveFL
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Water Proofing, or Water proof Alternators?

Anyone familar with a fully submersable Alt? or a way to prevent frying Regulators?

I know this is a Jeep board but since my Jeep is under resto and this is my Wheeler now I need some help...

On my other wheeler (Modded 96 Trooper) Ive been having serious Alt problems when I hit water. Isuzu places the alt on the lower right hand side of the motor (Worse place in the world) Ive already fabed a new bracket and changed to a Stock GM 105 AMp over the POS Hitachi that was stock with the vehicles. But whenever I hit a puddle at a decent depth BOOM there goes the regulator.

Ive been thinking about external Regulation, placing the regulator as high as possible away from water contact, but Im not sure if this will help. I guess I need more of an insight into what causes a Reg to short so fast with contact to water.

Any help, suggestions etc will be appreciated. Ive looked at trying to relocate the Alt but there is no way short of removing the AC pump to relocate it (Not an option since it is daily driver as well)

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Dave

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post #2 of 6 Old 06-12-2003, 04:22 AM
BamaJeeper
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40" tires would move it some.

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post #3 of 6 Old 06-12-2003, 08:41 AM Thread Starter
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Yea 40's would move it some, but unfortunatly Im running 33's now on a 4" lift and I just dont think the 3.2 even with 5.38 gears could handle 40's

Since I visit the board reguarly with my Jeep, and am i need of insight I was hoping some 4x electrical guru would be able to chime in with an idea I havent thought of.

Oh well, for now I just stay away from water crossings, at least until Jeep is back on the road.

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post #4 of 6 Old 06-12-2003, 02:24 PM
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I don't know if its possible to warterproof an alt. Just a thought I had for you was maybe get a Ford alt that uses an external regulator.
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post #5 of 6 Old 06-13-2003, 07:03 AM Thread Starter
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Didnt know Ford Alts used external Regulation. I converted over to a GM (Delco housed Alt) and found a Balamar High out put external Regulated Marine Alt for $235.

But will external regulation stop the Alt from frying when it hits water? Its always the Reg that goes and I am assuming this is from water contact, however is Alt is spiking from water would it just travel down the line to regulator?

Inquiring minds would like to know

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post #6 of 6 Old 06-15-2003, 04:03 AM
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The regulator will eventually fail if stored underwater, but first worry about the alternator itself. Brushes inside the alternator will become gummed and clogged with debris, and make the whole thing useless.

Alternators need to vent heat, especially when dealing with high amperage. There is no way around this unless you use a low RPM model (Under 1K). Because of the open design, the brushes are always exposed. There are Marine units that are completely water sealed, but are very expensive and produce no more than 10-20amps at most. They are used for power generation when boats are parked. Another alternative is to convert a Humvee alternator to 12V. Most military grade alternators will be really water tight, or even sealed, you'll pay for it too..

Most automotive alternators will have some function in water. Depends on how clean/dirty your submersion will be, and how long. Only thing you can do is to keep it out of water. Or make a splash gaurd and protect it as long as you can. Or you can relocate it further above the engine. Or Hydrogen power cells. Or run Nuclear. Regardless of what you do, Bamajeeper is pretty much on target. Point is, don't waste money on a state of the art regulator.

K9Jeep

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Last edited by K9JEEP; 06-15-2003 at 04:10 AM.
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