dual water pump pulley?

[chuck baader]

OK, you can change pulleys, but no where does it say you can add another belt:026:

[Greg Amy]

There is an implicit belt allowance with the pulley allowance, given that - by design - belt(s) will have to be changed with a change in diameter of pulleys. That is further clarified with the restriction that "type of accessory drive" must remain as stock.

Finally, within "Engine drive belts may be replaced with others of equivalent OEM specifications" so belts are implicitly "free" as long as they are equivalent to OEM (there's a wide open hole), and there's no subsequent restriction on the number of belts...



GA

[Dano77]

OK, you can change pulleys, but no where does it say you can add another belt:026:

And, Mazda RX7s come with multiple belts to drive multiple accesaries( Alt,AC, PS AIR Pump,) both of which pass over and drive the waterpump.

That said, if it came with two belts why cant you run two belts of a different size. Your allowed to remove AC and PS and AIR. The result is you need a shorter belt to drive the water pump that is driven by said accessary drive.

What is so confusing??????? You not adding any belts. Pretty simple if you ask me.

[chuck baader]

Dano, good point. Mine came with one belt. I have never actually seen the stock configuration so that being the case, I would have to agree its legal.

[Andy Bettencourt]

Greg is correct. Follow the logic...if you can use any pulley, and you choose a dual pulley, you can then use dual belts even though it never says you can use dual belts...

They only way this would be illegal is if the ITCS specifically called out dual belts as illegal.