D Appeldorn

correct me if i'm wrong,

but if i have a delcotron alternator with external regulator than i need a voltage regulator with internal regulator?

bought a year ago the voltage regulator with external regulator but it is not function propperly.
So i mounted the old one back with the new delco cover

But want to understand why it did'nt work.

as fact in my manual only the 442 had internal alternators and rest like mine 69'delta 88 had external alternators.
maybe someone changed it and maybe not, want to sort this out.

MDchanic

I am afraid that I'm confused.

I know it is difficult to communicate through a non-native language (I've done so myself ). I think you may have used the wrong words somewhere in your post, but I am not sure which ones were wrong.

There is an alternator, which generates the electrical current, and there is a regulator, which keeps the voltage correct by varying the current through the field windings.

Sometimes the alternator and the regulator are two different parts, and sometimes the regulator is inside of the alternator.

Could you possibly re-phrase your question? It seems as though you have a separate alternator and regulator system, but I am not certain what you have done to it, or what you are asking.

Sorry for the trouble.

- Eric

joe_padavano

Unless someone changed it, your car SHOULD have an alternator with an external regulator. The regulator should look like this and be bolted to the firewall:



The correct alternator for that system should have a plug that looks like this:



If your alternator has a plug that looks like this, it has an internal (self contained) regulator and does not require the one on the firewall:

D Appeldorn

Yes that i know off,

now the funny stuff, Fusick sells 3 type voltageregulators for bc body.

D632 - 1962/ 1963 all with regulator.
D663 - 1964/ 1972 all with external regulator
D680 - 1969/ 1976 all with internal regulator.

I did bought the expencive one (D663) $67,50 and it did not work propperly.
The D680 is much cheaper $39,50

The one reason i could think off is that i having a alternator that need the D680 voltage regulator with internal regulator.

I don't know the function off the D663 as most expencive, but landrover useon old models a 12 volt stabilizer to next to a voltage regulator

And there are 2 types of alternators, alternator/dynamo with external /internal voltager regulator.

MDchanic

Okay, now I understand.

There are two different alternators that could be in any of our cars:
The earlier one with the EXTERNAL regulator, and the later one with the INTERNAL regulator. Joe has posted excellent pictures that will help you to be certain of which one you have.

The older, EXTERNAL regulator alternator uses a D663 regulator, which looks like this:

and is available from Amazon for $57.64, and from RockAuto for $57.79.

The newer, INTERNAL regulator alternator has the regulator located inside the alternator housing. It can be replaced by disassembling the alternator. It looks like this:

It is available from Amazon for $17.79, and from RockAuto for $16.44.

These two regulators are entirely different, and you can only use the one that your alternator was designed for.

Verstehst?

Oh, and don't buy simple mechanical parts from Fusick, because he'll rape you.

- Eric

edit: also, as far as interchanging with other cars, the external regulator will interchange with all GM cars from the same period. If it LOOKS the same, and the plug fits, you can use it, so if you have any friends with old GM cars lying around, you can just take theirs. No need for a new one if you can find an old one that works - the old ones last a very long time.

joe_padavano

See how long they remain friends if you keep stealing their stuff...

MDchanic

*Ahem*

"Borrow"



- Eric

D Appeldorn

They don't let me



But what could be the reason that a new regulator give a abnormal voltage output?

Must i adjust a new regulator to the given specs in my manual?

MDchanic

It sounds as though you bought and installed a new regulator last year, and it worked for a year and then stopped working (I'm not sure what happened that made you decide it wasn't working), then you replaced it with the original regulator, which you had taken off a year ago even though it was good, and it all works well again.

This is an illustration of a point I have made here and elsewhere before: The old regulators work great for a very long time. The new replacements do not.

If the old one works, stick with it.

Don't worry about what caused the new, poorly made one to fail, unless you're an electrical engineer.

- Eric

D Appeldorn

no the new one did'nt work propperly from the beginning.
and lies on the shelve since the beginining.

It was expencive, but sending it back also

I had a to high of a voltage reading and changed the old one right back.
But the new one looks nicer, so i changed the delco covers

D Appeldorn

I'm repairing al off the minnor things that nobody see normaly.
And was curious why the new one did'nt work.

A other question,

I repaired my wirering under the hood but want to put some new ones.
Former owner did had a fire and i spent 5 month to sort out the wirering.

Would the front engine and light part of a cutlass of the same year fit?
Want the looks as stock as possible


It is hard to get new repro part for my 69' delta 88, posted several threads off a cutlass part would fit

MDchanic

A cutlass front harness would be different "smaller spacing between parts, for one thing), but you should be able to buy one from someone on these boards...

- Eric

D Appeldorn

I Want new lol

Most part that gonna be replaced on my 88 would be with new replacments

exept of those parts i can't get new or would'nt fit.

Why all the new shiny new stuf for A body's at least there should be something fitt on a b/c car.