External vs. Internal Regulator

[Doorkicker]

Just an opinion poll really... but what are the technical reasons to use an external voltage regular as opposed to having an alternator with an internal regulator?

 

[0DegreeEngineer]

OE look

 

[Doorkicker]

OE look

I thought that may have been the case, but wasn't sure if it was look or something else.

 

[Sinitro]

Down side of internal regulator is..
When it goes bad U need to change out the more expensive alternator..

Just my $0.02....

 

[Doorkicker]

Down side of internal regulator is..
When it goes bad U need to change out the more expensive alternator..

Just my $0.02....

Wow... well, that's a big reason!

 

[451Mopar]

Internal seems to work fine, but I think more of a constant output voltage without temperature compensation?

 

[6PKRTSE]

I have been running a GM one wire internal alternator for years with no issues and that is with 2 electric fans, huge electric fuel pump, Racepak and everything else. Including lights on the street.

 

[451Mopar]

My one wire alternator works fine also, just make sure the alternator output to battery is running a good size wire.
Newer cars have a temp sensor in the battery tray so the regulator can optimize the charging voltage, but car batteries are pretty tolerant of different charge voltages per battery temperature.

 

[RJRENTON]

Down side of internal regulator is..
When it goes bad U need to change out the more expensive alternator..

Just my $0.02....

NOT NECESSARILY.....the GM late 10SI and 12SI alternator's use an internally mounted and connected voltage regulator CAN be replaced easily. The regulator is available as a separate part....THERE IS ABSOLUTELY NO REASON to replace the entire alternator....the internal regulator is easily accessible....disconnect the alternator, separate the alternator at the brush end half, r&r the old regulator install the new regulator noting the mounting screws and insulators, reassemble alternator. A very simple task.....and a significantly lower cost than an auto parts store replacement.....remember: alternators do not bite....nothing to be afraid of.....just my opinion...of course........
BOB RENTON