Upgrading the alternator

[Jan-Willem]

I have not finished installing it, but i had the exact same issue, I got a Wai 13982n alternator. I also could not find a denso from a source I trusted. The Wai alternator was local and cheap.
For me also the toyota pulley did not fit,I bought a new pulley, but it did not fit either, so I gave up, and took it to a local alternator/starter repair shop.
(Don’t know why, but these shops are everywhere over here. All (almost) retired men that fix electrical motors and alternators in their sheds)
The guy had two boxes with old pulleys for me to fit. I found one, that I thought fit perfectly, but the repair guy did not agree. He showed me, you should set both alternators on a flat surface, with the pulley down. Then compare or measure the distance from the mounting to the flat surface. If it is exactly equal, the belt will line up.
The guy put the pulley I found, on a lathe, and corrected it for me.


Looking at the pictures, it looks to me like the rotating inner part is half an inch longer, it is longer at the backside of the mount.