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PA Performance 03-04 Mach 1 130A Alternator
This is a very popular replacement where slightly increased capacity is needed.This unit will increase the charging capacity at all RPM Ranges with NO modifications.
·Common on Ford DOHC Applications
·This unit is a direct replacement with NO modifications
·80 amps at idle (2000 alternator shaft rpm)
·145 amps maximum (6000 alternator shaft rpm) )
·The stock belt can be used on original equipment vehicles
·Actual Alternator Weight is 15.2 lbs
·All units are 100% NEW and come complete with internal voltage regulator and pulley
This alternator is available in a variety of finishes that includes Blue, Flat Black, Gloss Black, Red, Silver and White for an additional $40. Other finishes are Polished for $90 and Show Chrome for $170. Please call us if you would like either of these finishes.
To calculate the alternator shaft speed, which should be no more than 16,000 RPM do the following:
Alternator pulley size (ie 2.5")
Crankshaft Pulley Size (ie 5")
Ratio is 2:1 (5 / 2.5 = 2)
Max engine Speed = 5800 RPM
Multiply Max RPM x Ratio (5800 x 2) = 11,600 shaft RPM Max
Idle RPM = 1000
Multiply Idle RPM x Ratio (1000 x 2) = 2000 shaft RPM @ Idle
An alternator needs 1800-2000 at idle to make power and will make maximum output at 6000 rpm, and will start to fail at 16,000 RPM.