928 Motorsports Sur Grip pulleys
 

I had the Sur Grip coating added to my jackshaft pulley sc side and less than 200 miles later the belt is completely shredded. From day one I noticed a ton of belt dust around the jackshaft pulley. The Sur Grip coating chewed the belt to pieces. I'm glad I had already anticipated it was going to happen and bought another Vortech pulley to replace it.

If anyone was thinking about getting the coating added, save your money. It'll destroy your belt.

Picture of my belt!

Ouch!!!

Wow. That sucks, man. Glad it wasnt a surprise.

The only surprise was when it wasn't making any boost. :rofl2:

This is another reason to only use Vortech parts like their impellers to and not 928's. I've had no issue with belt wear with Vortech's high traction pulleys.

:iagree:
The problem is Vortech doesn't make a high traction 3.47 pulley. The 3.47 with the Sur Grip coating was Vortech with the 928 coating added. When I got the pulley back from coating I knew it was going to be an issue because it looked like 80 grit sandpaper.

Thanks for the heads up lol.
Was about to do that in the future too.

I think you need to step away from the 928 products for a while. :)

I just got off the phone with my mechanic. He pulled my sc today and spun the pulley by hand. He said that when spinning the pulley back and forth he can feel a slight clunking like bearing play. This is with the 928 ceramic bearings.

I don't know if slight play is normal. The pulley and impeller weren't rocking like if there was shaft play. The bearings only have maybe 500 miles on them. Being that I haven't heard of anyone else having issues with their ceramic bearings, it's hard for me to believe that mine are bad.

Needless to say, I sent an email to 928, we'll see what they say.

Good luck hopefully they will make it right.

I think that's just gear backlash. Turbos do not have gears so they do not witness this.

Thanks Aaron. That make's sense. I'm starting to lose confidence in 928 so that concerned me.

:iagree:

I got an email reply from Carl at 928. He verified the clunking is gear lash just like Aaron said. That's good news. Thanks Aaron.