I wanted to do some serious driving before I posted results. It's been a week now, and it's better in every way than my "rebuilt Bosch with the adjustible regulator set to max". It's vertually bolted on my 83" euro model.

But, it's still doesn't have the kind of juice I was looking for. I'm running an 2004 Mustang GT electric fan(has two speeds) and the stock fan in front of AC condenser. During the day, it's okay... meaning I can run everything full blast. But at night, now way!! I have to run the main electric fan on low(because driving lights are on). The car is running colder than ever, and so is the AC!!!. But I want to be able to run everything full blast at night(just incase).

There was talk here about a slightly more powerfull one?? Did anyone actually install it????

BTW: I looked up the Mustangs alternator output, it's got 130 amps. That's much better than the 105 amp delco. I need more JUICE!!!

 

Finding an alternator that will deliver 100 amps at idle speed is going to be a big challenge. That's what the battery is for, to carry your loads while the car is idling. Once your car is off of idle, even the stock alternator will do the trick. No matter what alternator you install, the voltage and lamp brightness will probably drop during extended idling.

Sounds like you've added a lot of extra load on the car. The electric fan should be painless, especially if it goes to low speed while idling. Got high-wattage headlights too? Find the ones that are higher on high-beam only, and stick with 55w low beams. Try the HID conversions that 928 Int'l and 928 Specialists sell. Drive with 100w bulbs in the "driving" lights? Do that HID conversion too. Manage the load a little, and you should do OK.

The cooling hose is a must if you want any alternator to last a while under high load and at warmer air temps. The only air that is otherwise available to cool the alternator is hot off the left-side exhaust and blowing the wrong way through the alternator.

 

The battery is mainly to crank the car, so at idle, it's the alternator thats doing the all the work. Where the delco really out performed the bosch is at idle and just above. With the bosch, the battery would discharge itself if it sat at idle for to long with the fans full blast. It's not alot of extra load I think, it's just two fans...one more than factory.

Someone here was experimenting with the higher output delco, but it was larger in size. I wonder what his results were??? Did it fit??

 

I've got them.... we have these 140 amp Delco Remy alternaotrs made especially for us, and they charge at idle speeds.

They are smaller than the OEM alternator, easy to install (requiring only one wire to hook up) and do not require the snorkel and air tube.

Here are some pics and info:
http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMESE%3AIT

 

Dude, that's exactly the same alternator I purchased....for $70! Tell me, HOW do you get 140 amps, out of an 105 amp alternator?? Just curious..

 

Because it is not the same alternator you purchased.

The $105 amp alternator is the cheapee, and we also modify the voltage regulator to be self-exciting so it only requires a one-wire hookup. Then we make and provide you with the mounting spacers you need to fit this alterntor onto the 928.

 

Hmm, looks identical...

 

They look the same on the outside but different on the inside. For the several Chevy trucks/SUV's I have/had they give you an option on output...4X4, rear A/C etc. My Tahoe has a stock 140 W. alternator with over 170,000 still works fine.

 

I was experimenting with the Delco CS130D, which is a higher-output alternator(160A in the configuration I was working with) with more robust bearings & sliprings but the problem I had was getting it to charge at all at idle. I could have gone with the "self-exciting" setup Carl offers but I wanted to retain the function of the charge light in the cluster. This alternator is designed to spin at least 3x crank speed, using at least a 7.5" V-pulley on the crank and the best I could get with the stock 5" crank pulley was 2x crank speed. With a ribbed belt I would be able to get a small enough alternator pulley to make it work out -- I have shelved the project until I have time to fiddle with different crank pulleys. More info on this page.

Here is the CS130D alongside the (incorrect)Bosch that came with my shark -- tentatively identified as an Audi 5000 alternator.

 

Yesss! This is what I was looking for. So did it actually fit? Is the CS130D much larger than the normal CS130? Why didn't you just get the pulley needed??

From what I gather, the 928 motorsport is an Delco CS130(same one I used). It has an added higher output voltage regulator($25 part), and a .50 cent spacer...LOL. The one wire hook up? I only needed to hook up two wires to the alternator. The battery cable, and the simple exciter wire....that's it.

Hey, more power to you if you can sell them for $300 a pop. Healthy profit margin for sure...

 

"It has an added higher output voltage regulator($25 part)"

That WON'T get it!

Read the other thread which explains what's really going on and what's necessary
as SharkSkin has mentioned. That thread should have basically ended the discussion.

 

Weissach, FYI I paid something like $200 for that alternator -- it is NOT a Tijuana rebuild, it had high-quality bearings & parts throughout, special regulator, heavy-duty diodes, etc.. AND, I was paying a wholesale price. The special winding alone cost the builder more than $70. Apples & oranges.....