So!

My alternator belt started squeeking at random times lately, and I decided that I should replace it before it leaves me stranded.

So basically, what kind of belt do I need to replace it? I plan on ordering the appropriate one from Mazdatrix, so part numbers would be greatly appreciated.

Also, I have an FD alternator with dual belt pulley on it, but I never added a second belt. Which belt do I need for the second one, is it the same as the belt that I'm replacing?

Thanks in advance everyone!

 

You need two Alternator belts.

 

I would get 2 new stock size belts because the one you have is going to be stretched a little due to age and you wont be able to tighten it. When I put mine on my 89 thats what I did.
The yahoo belt (http://1300cc.com/howto/how2/belt.htm) works too which is what I did to my 87, which is weird because it doesn't fit all that tight but it works.

 

Do you still have your air pump?

 

Look at my mods list in my signature - absolutely not

 

Could somebody tell me why someone would get the dual alternator pulley belt...

 

When you remove the airpump the waterpump is only being driven but one belt (alternator). During high rpm some people experience slipping due to only having one belt on the waterpump so they get a dual alt pulley and run 2 belts from alt to wp.

 

Without an air pump belt there is not enough contact arc on the fan pulley to handle the torque load of the stock fan.