Anything unique about a LT-5 Alternator?
 

The bearing in my alternator is a bit noisy, so I?m thinking about changing it while everything is apart. Is there anything different about them, or just standard GM?

Re: Anything unique about a LT-5 Alternator?
 

I think they are readily available

Re: Anything unique about a LT-5 Alternator?
 

Mind you get the same size pulley or r&r the one you have.

Re: Anything unique about a LT-5 Alternator?
 

Have it rebuilt. It's a simple job.

Re: Anything unique about a LT-5 Alternator?
 

Try and really isolate the noise and make sure it's the alternator . I made that mistake with my 96 LT1 coupe. I have that alternator sitting in my parts collection. I was sure it was the alternator and swapped it out. Upon starting the car the noise was still there. It could have been the power steering pump or possibly the ac compressor. I even tried the screw driver trick and it sounded like I could hear it coming from the alternator. I would try a stethoscope or maybe removing the belt all together and turning each accessory pulley including the water pump.

Re: Anything unique about a LT-5 Alternator?
 

Thanks.
It is the alternator. The bearing feels rough. But we are checking the other stuff too. Good reminder to get.

Re: Anything unique about a LT-5 Alternator?
 

Is there a great guru of alternators, who could rebuild it with quality parts, and perhaps up the output some?

Re: Anything unique about a LT-5 Alternator?
 

Im sure you can find a local auto electric shop to do it. It's an easy job. I've done them myself in the past.

Re: Anything unique about a LT-5 Alternator?
 

Link to youtube tutorial.
https://youtu.be/1Y1j6sNS9nA

Re: Anything unique about a LT-5 Alternator?
 

Only thing to be aware of is our Alternators are the early CS-144 housing.. there are 2.. Early and late, the Late housing will not fit in the 'pocket' where ours are installed.

I rebuilt mine with better parts to output a bit more power, along with an additional 8 gauge wire back the the distribution terminal and adding all the LEDs.. it all helps

Re: Anything unique about a LT-5 Alternator?
 

Thanks for the reminder. Definitely Want to add the extra cable.

I was looking into alternator parts today. The early housing info helps a lot.

Re: Anything unique about a LT-5 Alternator?
 

Here is where I bought everything for mine

https://alternatorparts.com/

Re: Anything unique about a LT-5 Alternator?
 

Thanks!
Thats the place I was looking at today. Good to have a recommendation.

Nice, too, that I can build a dual rectifier, 350 amp version of the alternator!

Re: Anything unique about a LT-5 Alternator?
 

Yeah the dual rectifier might not fit. Also you limitation for power is the rotor

I bought a rotor I have a stator out of a 140 amp late model. I bought the heavy duty rectifier DR5176PF and I am still using the original regulator.. according tho that shop and the guy there I have about the max you can do with their parts

Re: Anything unique about a LT-5 Alternator?
 

I'm impatient. I got mine from Auto Zone and had it swapped the next day. No issues.

Re: Anything unique about a LT-5 Alternator?
 

Oh I bought one local and then rebuilt mine I will build another too then have a spare

Re: Anything unique about a LT-5 Alternator?
 

I made the mistake of taking one apart for a rebuild,getting side tracked and not getting back to it right away and got the spacers mixed up. Anybody got the dimensions on the spacers and placement?

Re: Anything unique about a LT-5 Alternator?
 

Which spacers?

Re: Anything unique about a LT-5 Alternator?
 

I am a little confused. My alternator died so I bought a kit to rebuild it. However, after installing it, it still was not producing voltage so I replaced it with a 250 amp Powermaster unit from Summit. Here is why I'm confused. I thought my alternator was a CS144 but the wiring harness could not be plugged in. The CS130 alternator I purchased fit exactly as the original and the factory connector plugged into it as it should. Did you have to change the connector to be able to plug it into your CS144 unit as the connectors are a totally different shape?

Re: Anything unique about a LT-5 Alternator?
 

CS130 and CS144 should have the SAME connections. I did a CS144 upgrade on my old 89 which had a CS130.. direct connection..

Maybe you bought a different CS144 setup.. there are some different ones out there

Re: Anything unique about a LT-5 Alternator?
 

The problem is the wide spaced that goes between the fan/pulley doesn't seat against either surface-face or fan,backside pulley when tight. This was a rebuilt ALT no telling if it was rebuilt correctly,that came in the car,car also came with original. I rebuilt the original and put it in the car and rebuilt the ALT in question. I had the cases walnut blasted,new bearings and VR,it sure looks nice,if I can get the thing back together. One of my pet peeves is looking at a motor in something nice then you notice the ratty alternater. I'll figure it out. If somebody has one apart or will be blowing one apart could I get the thickness of the spacers and in what order?

Re: Anything unique about a LT-5 Alternator?
 

My alternator is out and sure has a nice little squeak when you spin it. The good part of a low mileage car? Most of expensive parts don't wear. The bad part? A ton of cheaper parts don't age well just sitting. Like the big PCV hoses under the plenum are as hard as rock. But all that stuff is getting replaced, and I'm enthusiastically supporting both Haibeck and Jerry's.

Re: Anything unique about a LT-5 Alternator?
 

I have a local alternator and starter repair company here in Baltimore that have done several for me. Many cars and old 928 and a Ferrari Testarossa and a Lotus Esprit etc. so probably not an issue. They give 1 day turn around. generally $125 maybe $150 and I have had no issues. If you want to send to me I will help with it. I have received too much help in this and other forums not to help. Let me know. Mark Seifert

Re: Anything unique about a LT-5 Alternator?
 

Hi Mark,
I am in Ellicott City. Which shop do you use in Baltimore? We need to get together during the next Wazoo maintenance day.
Thanks

Re: Anything unique about a LT-5 Alternator?
 

Charlie, The place is in Dundalk. It is P & H Electric. Really good and dependable and very economical. They have done lots for me.......maybe too many old cars......never too many. I was in Elliciott City this past Sunday. I live close to Hunt Valley, and was there for a Lotus Esprit photo shoot. I have a 98 V8 Esprit, so with the ZR1 you see the connection. Like I said once before I thiunk we met a long long time ago at a class I took at Hopkins. We had a speaker from your company speak to us about international marketing. It would have been 87 or 88. I need to get to the Wazoo so I can meet everyone. I have my plenum 1/2 off as I am replacing the coils......wires.......and injectors since I am in there!!!!

Re: Anything unique about a LT-5 Alternator?
 

Thanks Mark, ah Dundalk, the town of many surprises. Will file this information away in case we need it in the future. Yup, when I worked for Ellicott Machine in Baltimore 1982-2002 I gave a few international marketing presentations to colleges and universities around our state. Had a blast telling stories about doing deals in Vietnam, Nigeria, Egypt....all are different angles to close the deal. Now working with DSC Dredge since 2002 and still doing the international dredge sales. If you are near Hunt Valley do you go to the cars and coffee at the mall on Saturday mornings? I am there most weekends and then at Burtonsville cars and coffee on Sunday morning. Sure we will meet up again shortly.

Re: Anything unique about a LT-5 Alternator?
 

I was going to Cars and Coffee at Hunt Valley. Not everyweek end but occasionally. I also have a Lotus Esprit V8, which I have had up there on occasion. It is the only one of course.

Re: Anything unique about a LT-5 Alternator?
 

Great and I will be on the lookout for you at Hunt Valley. Bummer yesterday was a washout at least for me.

Re: Anything unique about a LT-5 Alternator?
 

Got it over to the local alternator guru. Said the guts looked like new, but the bearing had a bad spot. All fixed up and about to go back in.