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Author Topic: I.C.E Charging problem  (Read 1971 times)

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Mr Skrunts

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Re: I.C.E Charging problem
« Reply #15 on: 18 July 2010, 03:07:19 »
Numpty here, dont know much about these things but :-

165 amps charging
350 amps required.

When I used to read about these I.C.E. setups years ago I am sure I often saw a second alternator for the auxillry batteries with brackets fabricated to add it,

V6Drift, black beauty and a couple of others have done some big kit conversions, maybe you might be able to pick thier brains - was wondering if this thread might have been better suited in the electrical section for that reason. (Just a thought)
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Andy H

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Re: I.C.E Charging problem
« Reply #16 on: 18 July 2010, 09:59:55 »
Just a thought

Was the 14.4v measured with a cold engine (and fast idle) & the 13.5v with a warm engine (and normal idle speed) ?
« Last Edit: 18 July 2010, 10:01:36 by andyh »
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Kevin Wood

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Re: I.C.E Charging problem
« Reply #17 on: 18 July 2010, 12:24:32 »
I think we're confusing Amps and Amp-Hours here. One is a measure of current and the other a measure of capacity.

The alternator will probably current limit at or around 165 amps. In any case, the resistance of the cable to the rear of the car will probably limit the current it can deliver into the batteries so I suspect there's no problem there.

The third wire to the alternator is purely for the charge indicator light on the dash on an Omega. The alternator must have its' own internal regulator (I assume the replacement one does?) and the charge rate is not controlled by the ECU as it is on some cars.

I would second the suggestion to simplify the setup. Disconnect everything at the rear and leave the original battery at the front. See if that behaves itself first. I would also consider an arrangement to isolate the rear batteries. Either a manual switch or a caravan voltage sensing relay. I would also make sure a fuse is fitted both at the front and rear of this cable run. With that much current delivery available you do not want any mishaps.

Kevin
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zirk

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Re: I.C.E Charging problem
« Reply #18 on: 19 July 2010, 12:52:25 »
Quote
Just a thought

Was the 14.4v measured with a cold engine (and fast idle) & the 13.5v with a warm engine (and normal idle speed) ?

I like your thinking there, Andy.  :y
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