NST (NonStopTuning) Pulleys. Info, Specs, User Data...

[fmicle]

Originally Posted by Aothachos

I'm not sure if this is normal, but I was checking the pulleys I installed, well the waterpump nst pulley is starting to get engraved into. Meaning the belt is digging into the pulley so that theres an engravment from the belt in it is this normal if anyone knows what i am talking about?

Yes, that is normal, everything will wear off eventually, even the strongest materials, just give it enough time and friction. The OEM water pulley is painted black, but when I took mine off it had a shiny strip where the belt makes contact.

Think of it almost as an infinite polishing machine