So I'm currently 'updating' the engine on my 1993 RX-7 due to a belt blowing. Since that happened, I went the safe route and bought new belts for both A/C/P/S and Alternator/Air/Water pump belts. I was able to get a belt that fits the P/S/A/C, but am stuck when it comes the the Alternator. I bought a 53in, and it didn't quite fit, It was too tight. The alternator and air pump couldn't be put back to their original positions, so I bought a 55in, only for it to be too loose. Does anybody know where I can buy one that will fit, or what size I should be looking for.

 

well if the 53" is too short and 55" too long, get a 54" long belt. doesn't matter what vehicle it was made for. is it a 5 rib belt? and for the record, belt lengths also come in half lengths too.

 

the factory Manual transmission size is 5PK-1355 (a/t is 5PK-1310, air pump pulley is different), the OE is Mitsuboshi

 

the 5pk-1355 is 1355mm which is just over 53", so a 54" should be it.