Installed SN95 alternator on my '93 now belt is to short...

**ALblown50** · 06-15-2004, 12:40 AM

installed sn95 alternator on my s-trim'd '93 now belt is to short. can't get it to go over the a/c pulley. Am I doing something wrong? do I need to get a longer belt? if so what size? thanks

**frdfandc** · 06-15-2004, 05:30 PM

The pulley might be bigger, or you are routing the belt the wrong way.

**Forcedpower** · 06-16-2004, 08:59 AM

I agree with the above post the pulley is bigger. Take a string and run it around the pulleys like you put the belt on and meassure it.

**1hawaii50** · 06-25-2004, 10:52 PM

I upgraded to the 3g alternator and ended up having to go to a belt 1" longer than what I was using, as the alternator pulley was larger.

**White90LX** · 06-26-2004, 01:06 AM

I don't know what kind of pulleys you are using. But my combo is a 1990 5.0 Mustang with A/C, P/S, smog, 93 Cobra water pump pulley, 4.75" inch crank pulley for engine (93 Cobra kit), and a 130 amp alternator with a Ford racing underdrive pulley. Before I put the Vortech S-trim on I was using a Gates K060874 belt with the above items. The last three numbers is the belt length in inches. After the blower went on, I found out that the 87.4 belt was too short. I bought a Gates K060888 belt and it fits fine now. I dunno if the blower brackets shifted the position a little or what. Your belt size will vary depending on what kind/size pulleys you are using. Just make sure the belt you get is in the "range" on the belt tensioner. You don't want it too tight or too loose.