Computer Tested Alternator Results
Every PA Performance alternator is tested using an industry
standard test sequence. The test measures a variety of
outputs, including maximum power output, regulator set
points, and amperage. Of the various data on the test
sheet what is important to us is the output current
as this is what is going to determine how quick our battery
is charged up and also how well the electrical accessories
are going to get the power they demand. The graph below,
and the table to the right, illustrate the effectiveness
of the 3G alternator from PA Performance as compared to
a stock 2G alternator such as the ones found on Fox-body
Mustangs. At idle (engine speed of approx 750 rpm) we
see that on a test bench the 3G alternator generates over
twice as much amperage than the stock second generation
alternator.
Garage Tested Results
It's one thing to be presented with results from a specialized
test instrument, such as the data shown above. However
at FordMuscle we are interested in what this means in
a real life situation. So we conducted our own tests using
some standard tools and measuring devices. Using a clamp
meter and digital volt meter we first measured the output
of our stock Mustang 5.0L 2G alternator, as found on a
1993 Mustang. Then we installed the 3G alternator and
conducted the same test. Both tests were performed from
idle to 3000 rpm (the typical point at which an alternator
produces maximum output.) The major current drawing accessories
(electric fan, AC, head lights, stereo) were turned on
to place maximum load on the alternator. The videos below
show the results.
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