3rd gen alternator on series 4.
 

Hey! Here are the first photos from this swap. Detailed write-up to follow in a few days.

This is the 3rd gen pulley. I didn't need the pulley but, I needed the spacer part of the pulley. It's all one piece so, I had to modify it.
http://brfoundation.com/RX-7/Images/alt_2_1.jpg

Here's the 3rd gen pulley after the modifications. There's not much left. I removed the pulley and then shortened the remaining spacer until my belts lined up.
http://brfoundation.com/RX-7/Images/alt_2_2.jpg

This is the alternator ready to install.
http://brfoundation.com/RX-7/Images/alt_2_3.jpg

How much better is the FD's? I'm going to want to upgrade my alternator once I get my UD pulley, dual alt pulley, and efan..... should I go w/ the FD one, or just an 89+ one? Do you know the rates of each?

'86-'88 = 70 amp. Wouldn't charge my battery with 14 amp e-fan.

'89-'91 = 80 amp. Charged enough but, it's now broken. I bought it used.

'93+ = 100 amp. It's in and working now. This puts me well over my needed amperage.

'89-'91 costs only about $10 less than the '93+ at NAPA.

There's a little work involved in going to the '89-'91. There's more work to go to the '93+.

Here it is. I just finished.

http://brfoundation.com/RX-7/Images/alt_2_9.jpg

That looks like it turned out really well! Good job...are you gonna do a write-up?

Thanks! Yea, it looks like it belongs there. I'll write it up in a day or two and post here again.

I must give credit to Brad(rx7_ragtop). I didn't even know that it would fit on my engine until he did it. Here's his write-up.

http://www.geocities.com/rx7_ragtop/alternator.html

Mine seems to have been a little more work than his because I have the dual pulley. I had to make another change because of the pipe for the FMIC.

Mike

I did this mod too and it works great...see my post here....

https://www.rx7club.com/vforums/show...&threadid=6349