V6 E-Tec Alternator amperage??

[DoferGofer]

Embarrassed to say after reading and trying to understand as much as I can about the E-Tec product.
The new or new to me dual voltage alternator is over my head, this alternator that produces 133 amps, with a full 50 net amps available for powering the boat with dual volts and dual amps, has me puzzled..
My old XP has a 35 amp alternator which I thought was the cat's meow. Always kept my battery charged. So what is the real deal with this dual voltage, dual amperage alternator, what does that do for me, average Joe fisher/crabber?

Regards,

[Chunder]

Not sure about the newer E-Tec's but the older ones have a 50 amp output, to charge two batteries you have to buy another harness which plugs in and split the 50 into two 25 amp outputs, this system works fine on my 115hp.
Chunder

[SEAHORSE]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by DoferGofer &raquo;</td></tr><tr><td class="quote">

The new or new to me dual voltage alternator is over my head, this alternator that produces 133 amps, with a full 50 net amps available for powering the boat with dual volts and dual amps, has me puzzled.
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Don't be embarrassed or ashamed, that's what we are here for, to englighten you. It's our other mission, which is to make your life miserable and troubled, that we do so well and take pleasure in. Remember the old saying about educating elderly canines and the futile attempts to make them accomplish new feats!

The E-TEC system is unique, efficient, clean, and revolutionary, but it requires a large amount of electrical power to activate the injectors, fuel pump, EMM, and the ignition system. That is why the alternator has so much capacity. The stator windings are in 3 sets and they go directly to the EMM for rectifying into DC power then to several voltage regulators for injector and ignition power (55V), computer and sensor power(5V), and battery charging and fuel pump(12V).

For battery charging, the alternator directed by the EMM dedicates up to 50 amps of its total capacity if needed. In addition, the EMM has the capability to split that charging current into 2 separate systems with individual regulators for two batteries. Each one gets up to 25 amps at a time if required to maintain the battery.

If you have a starting battery and a house battery for the boat's electronics, you do not need to do anything. The EMM will make sure each one gets the charging amperage and voltage regulation that it needs, without the operator having to turn a battery switch back and forth to keep each battery topped off.

In another application, many of the commercial fisherman and crabbers use the dual charging feature to power their electric winch system and a 4D, 8D, or a couple of group 31 large capacity batteries. Between each "stop" the secondary charging system automatically recharges those big batteries so fishing or crabbing can be done all day or all night.

To use the 2nd battery feature, called an isolator, you just connect an optional wire and fuse assembly to another battery and the E-TEC automatically does the rest. To have the best of both worlds, use a 1-2-ALL battery switch in case you ever need to "jump" the starting battery with the house battery and to shut the whole 12volt system off when not in use.

[DoferGofer]

Interesting, can I use the 2nd battery feature, called an isolator, to charge my two twelve volt batteries for my (24volt) trolling motor, by hooking it up the same way as I hooked my on-board battery charger?

[SEAHORSE]

It won't charge 24volts for your 2 hooked up 12 volt trolling batteries. You would have to disconnect them then wire them in parallel for charging 12 volts.

Don't forget that the 25 (or 50 amp total) amps charging is only above about 2000 rpm if I remember correctly. At lower rpms, the charging output is proportionately less. No service manual handy for reference at the moment.

Due to the current draw of a trolling motor, you would have to run a very long time while trying to use the engine to recharge them.

[DoferGofer]

Hmmmn, At lower rpms, the charging output is proportionately less. About ninety percent of my total day is going to be under 2000 rpms. At that rate, will I ever get this dang thang out of the break-in phase before I turn eighty?

[WildeOne]

Just take it out and run fast for ~ 10 hours, then you will be beyond the double oil time.

[SEAHORSE]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by DoferGofer &raquo;</td></tr><tr><td class="quote">. At that rate, will I ever get this dang thang out of the break-in phase before I turn eighty?
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Just give the keys to a teenage grandkid or aquaintance, no problem keeping the revs above 3000 then!

[ChampioNman]

<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by WildeOne &raquo;</td></tr><tr><td class="quote">Just take it out and run fast for ~ 10 hours, then you will be beyond the double oil time.</td></tr></table>

Maybe as advertised Not me.