Round Back Alternator Rebuilder
Guess you'ld be surprised then.
Most parts store alternators will max out well below 90 amps, even at 2000 rpm and 14.0 Volts.
(discussing these Chrysler alternators not late model denso or anything like that).
There are various ways to make the output amperage higher, but there's only so much room inside a round back or even a regular squareback.
Getting higher output from a revised squareback is easier.
Here's a test sheet that came with a remanufactured '78 amp' revised squareback.
A couple things to keep in mind when looking at the remanufacturers test results:
RPM is alternator rpm.
The load was applied while holding 13.2 Volts. (If it was regulated to 14 or 15 Volts, the output power would be the same and therefore the current output will be less)
Also notice the field current draw is 6.8 amps !
Guess you'ld be surprised then.
Most parts store alternators will max out well below 90 amps, even at 2000 rpm and 14.0 Volts.
(discussing these Chrysler alternators not late model denso or anything like that).
There are various ways to make the output amperage higher, but there's only so much room inside a round back or even a regular squareback.
Getting higher output from a revised squareback is easier.
Here's a test sheet that came with a remanufactured '78 amp' revised squareback.
A couple things to keep in mind when looking at the remanufacturers test results:
RPM is alternator rpm.
The load was applied while holding 13.2 Volts. (If it was regulated to 14 or 15 Volts, the output power would be the same and therefore the current output will be less)
Also notice the field current draw is 6.8 amps !