oldstata

1965 cutlass 330

Just wondering pro and cons of converting from external regulater to an internal regulater ? As well do the brackets need to be changed out as well or if a newer model will fit ?


Currently my regulater is bad and it's only 15 bucks more for a alt verses regulater

Thanks

joe_padavano

I'm a big fan of the 10SI/12SI alternators. I even put one in my 62 wagon. So long as you use one of these (and not a CS130) it bolts to your existing brackets.

oldstata

Thanks not familiar with the codes do you by chance know what year the guy at napa just looked up a 74 olds 350 would that work ?

BILL DEMMER

unless the cs130 has the correct drive end housing to bolt in place of the si.


bill

BILL DEMMER

i would specify a '76 model year for the alternator.


bill

joe_padavano

The SI-family alternators are the internal regulator version used throughout the 70s and 80s. I actually prefer the early 1980s versions used on the 307 Olds. These are 78 amps and bolt right up. That's what I used when I converted my 62 F-85 to an alternator. Bill's right, there IS a version of the CS-130 that has the same mounting lugs. Unfortunately there are several versions that do not fit, so you need to be sure you get the right one if you go that way. The advantage of the SI-family is that the case looks similar to the older alternators. The CS-family is smaller and completely different. Either way works.

BILL DEMMER

to the OP: whatever you end up doing, if you install a higher capacity alternator, you have to upgrade the output wiring accordingly.

the advantages to the 12si and cs130 are they both can put out nearly half of their rated outputs at an idle. the cs130 has a "soft turn-on" and superior load dump protection besides being good for sensitive electronics(as found in the vehicles they were used on).


bill

oldstata

Thanks guys i will be getting One this week
I really don't need to raise the out put just wanted to eliminate the external reg

If I understand correctly I disconnect the blue and white wire and run the brown wire from the external reg to the d terminal ?