Description

130 AMP Alternator Kit

 This is a very popular replacement where significantly increased capacity is needed. This alternator is more popular for electrically modified cars – this unit will increase the charging capacity at all RPM Ranges with no modifications.

• ·This unit is a direct replacement
• ·80 amps at idle (2000 alternator shaft rpm)
• ·160 amps maximum (6000 alternator shaft rpm)
• ·The stock belt can be used on original equipment vehicles
• ·Actual Alternator Weight is 15.4 lbs
• ·All units are 100% NEW and come complete with internal voltage regulator and pulley
• ·All alternators are 100% new, tested at time of assembly

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.