The13Bats

Anyone happen to know cars to look at in the junk yard to get a high amp alternator off of?

Thanks...

Big2Bird

SI or CS?

Easy Mike

FWIW: the junk yards I used to frequent all had racks of parts number cross reference books. The counter guy (or lady) should be able to tell where to look for your alternator. It's also possible they can grab one off the shelf.

The13Bats

SI or as I like to call them "modern"

There goes Mike selling books again...
The only paper books at the yard I hit are old trucker zines.

It's cool now days they have it on the comp data bases but I have to know a car to start with, for example some blazers I believe had alts 200 or 220 amps but the yard can only tell me if they have the car there.
I cant ask or look up which chevys had high output alts...or at least I havent found that list yet hence my question here...

It is handy info.

Big2Bird

SI was 1971-1985
63,105, and 140 ampere

I would start with Cadillac, police cars, ambulances and trucks.

Anything that had all power windows,locks,A/C, all the bells and whistles.

Happy hunting.

Aggitated Monkey

Don't know ALTs too well. Just know the mid 80's Suburbans have higher AMPs with the same size case as ours cars. It that helps at all. Some Cadillacs do also. I would think any GM with a lot of ele features would have higher AMP.

Richard454

I'd look at some 90's BMWs- 5 & 7 series. Bosch alternators- really quality pieces- not to mention 140A on the air cooled ones. Yes- the plastic tube is designed to get fresh air from the front of the car.



Now if you want to go off the scale cool- there's some water cooled ones that are in the 150A range and a wimpy 90A at IDLE!!!- On the late 90s- early 2000's 7 series.

The13Bats

So what I'm I missing about this one....

http://www.ebay.com/itm/NEW-BLACK-HIGH-OUTPUT-ALTERNATOR-FIT-GM-65-85-1-WIRE-ONE-WIRE-220-AMPS-150A-IDLE-/331318022773?hash=item4d2417d275&vxp=mtr

TimAT

The one wire part?

I'd bet someone is fibbing a bit

Big2Bird

The need for it.

Are you planning on doing arc welding out of the car?
Is your sound system 2000 watts?
If the regulator is working properly, you will never see full output, and they know that.
The large SI units are prone to overheating. The heat sinks were never meant for above 100A
The CS units solved that

Big2Bird

Big time.
I bet it is for peak power in milliseconds, then drops like a rock.
I bet if I set it up with a 200ampere load, it would let out the smoke pretty fast.

dugsgms74

A water cooled alternator...german (over)engineering at its finest

Solid LT1

Only the Krauts, I had a V8 Audi RS4 that Sad disappointment had a water cooled alternator on it.

Like someone said a Caddillac or cop car. Someone has also linked to EBay, lots of SI high output alternators available there but, watch out for cheap foreign components that can easily fail.

TimAT

Might need some of this if that alternator really does 200A

The13Bats

Why do you say that "one wire" alternators have been around working fine for many years but do have a lot of mystic and misinformation with some.

http://www.rodauthority.com/tech-sto...er-to-hook-up/



I would expect no less from you bbird,
I am not doing any welding from the car and do not have a ghetto thumping bass heavy stereo,

I will have electric fans, low end stereo, modern lights and other things that draw more than the car did in 69,

To me Having a larger alternator is like having a larger gas tank or having a condom or gun on hand,
it's far better to have it and never need it than to need it and not have it.


Maybe it would maybe not guessing about it dones't help perhaps all the companies offereing them would like to take you up on the bets if you have the toad pelts to back it up, I respect your opinions although they are just that I really feel you should express it to the companies.

That is my main concern, the ebay units have tons of good feedback but what parts are they really made out of...good import parts or crap import parts...

I found the stock alternator wire dinky even for stock samps and I replaced it with larger wire a long time ago, I also do things like run relays on my headlights which some people feel are a must and other simply do not feel are needed.....

The main reason I asked the threads topic question was to find a junk yard high amp alternator to know it's made well...
When I saw what ebay offered new it got me thinking.

Big2Bird

This is what a purpose built 200 amp rated alternator looks like:
http://www.dieselusa.com/productinfo...0to%20200a.pdf

If you think they can do the same in that little SI case, then by all means, buy into it.

The13Bats

If you are so adamant they can not and are not doing it go hit one one of the many companies building them and tell them you know more about it than they do and they are wrong and building the imposible,
I am seeking info not your opinion, if you want to show me facts then show me 100% of the ones in a si case failed....

Big2Bird

From powermasters website:

300/350 AMP OUTPUT: Powermaster's SPL alternators utilize special custom wound stators and our own rotor design, in conjunction with the XS VOLT's capabilities, to create the ultimate car audio alternator. Units typically produce 300 amps at 2000 engine RPMs when used with a 12-volt system and 350 amps when used with 16-volt systems. The SPL alternators are specifically designed for trailer only extreme competition vehicles. Because of the radical design, output at idle is usually 0 and because of additional heat created; these units should not be operated at full output for more than a few minutes. In some cases, SPL units can be custom installed as a second alternator to the original unit for street applications. However, caution must be taken that only short-term loads are sent to the SPL alternator.

It would seem they are saying it is a peak rating only, and sustained duty will kill it.(I kinda told you that).
So they can say it puts out 200amperes, and it can, till it burns up.
They are leaving out the continuous power rating.
Delco and the other manufacturers post the continuous duty rating, not peak power.

The13Bats

geez man you ran with that, I bet you and toobroke are or would be really good buds.

I asked about junk yard higher amp alt then posted a wild 220 amp one on ebay for critiquing which is got but the critiquing so far is pretty much opinion not fact. ( but I tend to believe most ebay stuff is junk )

I already told you that I have zero interest in high end car stereos or welding from my car, why beat that poor dead horse ?
Bbird, you go way, way out on the limb of the subject and you find some 300 plus alt and because the outfit that makes it admits it's some special use item you want to blanket that down the chain and try to use that unit to prove all higher amp alt's will not work, what poppycock,

How about find some tech like that on a 140 amp, hum?

Big2Bird

I was trying to explain to you that peak power and continuous power are not the same, and that these manufacturers are playing on that fact in their advertisements.

Now you insult me by comparing me to the Mountain Hermit just because you don't get it?

You seem to bait people with a question, then use the fodder as fuel to argue.

Your on your own buddy. Go argue with someone else.