Have you rebuilt your own Alt ?

[DzNuttzOnYaChin]

Where can we find parts like stators, rectifiers, rotors etc ?

 

looking into trying this out myself. watched a few videos and seems very easy to do really. hard part is finding correct parts etc ..

 

any help out there ?

[WalledSonic]

Literally a couple posts down from yours

 

[DzNuttzOnYaChin]

11 minutes ago, WalledSonic said:

Literally a couple posts down from yours

 

yeah but he is looking for a kit.. I'm looking for the whole thing from start to finish. 

 

how to determine what case, what parts where to get the parts etc ... 

 

 

 

[DzNuttzOnYaChin]

ALL Credit goes to Expo615 on caraudioclassifieds forum 

 

"What do you really get when you spend 600 plus on an alternator? I am not going to bash any alternator retailer just give out some info. For now I am only going to talk about Denso Hairpin alternators.

There is a small case 128.5mm stator and large case 138.5mm stator. For small cases there are two different stators 100-130 amp and 130-160 amp. On the large case there is a 200 amp stator and a 220 amp stator. The rotor coil resistance is what varies the amperage on the same size stator. There are two different rotor coils for the 128.5mm 2.5 ohm and 1.8 ohm. The lower resistance pulls more current and has a stronger field to produce more power. On the large case the is a 2.2 ohm and a 1.8 ohm rotor coil.

So you want an external regulated alternator? just remove the voltage regulator and replace it with a Chrysler terminal block that will connect to your regulator. You want a different voltage? There are more than a page full of internal regulators that have different options such as voltage, soft start and self exiting(one wire)

So you wanna heavy duty rectifier in it? All you need it the rectifier from a Cadillac/Buick which has 12 60 amp diodes pressed in a aluminum finned heatsink.

Custom/hybrid housings? Nope, Denso makes this alternator to fit most every current engine family. Don't get suckered into the custom case B.S. unless it is a billet piece. The universal Hairpin that is being advertised is just a dodge caravan 3.8 unit with a rear half that has the rear mount cut off and smoothed out.

Pulleys? you might not need a custom pulley. These alternator put out full power at a fairly low rpm so a stock pulley might be fine. If you do need a smaller one, you can get one for a lexus/toyota which is a 2.08 inch.

Keep in mind that these ratings are hot ratings from Denso.
The ratings advertised at all the Alternator shops are cold ratings. The large case 220 amp actually peaks at 277 amps cold!!!! I hear the small case 160 will do close about 190amps. Now I am not saying that there are not custom wound stators on any of these Hairpins but be carefull what you buy. If its a small case higher that about 210 amp rating they are lying or it has a custom stator. The same goes for a large case over 300 amps.


If there is more interest on this topic I can post some pics and part numbers and try to help you build one. "