Subject: Re: Water Pump Modification

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I think you should be looking at fitting a modern large output
alternator to keep up with demand. Battery size is relevent
to starting demand, your dynamo only has an output
29/31 amps if your lucky remember it is Lucas. This is the
reasom they fitted a ballast resistor ignition systems, with
the battery in the boot there is a large drop in volts at the
coil on start up. Even the converted dynomo/alternator units have a hard time with demand.

Ray.