I had purchased my pulley directly from the manufacturer also
I will be emailing him tomorrow morning and including the photo. We'll see what happens.

But now I'm gun shy about that pulley. I can't be refinishing my hood every time a pulley fails.

 

As you should be. I got mine from Rudy. It looks fine....but I will try to take it off when I have more time and inspect it a little closer with a magnifying glass. That looks to be metal fatigue....and that shouldn't have happened with no more miles you have had. I have over 4k on mine to date, with two 1/2 mile events under it's belt. Can't wait for Rudy's take on it.

 

I've e-mailed the manufacturer and included a photo of the failed pulley. I hope he will replace or rebuild my damaged pulley.

I'm now thinking that "we" should fabricate a fender or shield or shroud piece to protect against collateral damage if / when a pulley grenades. I pulled this image off the internet to present a visual image of what I'm thinking about but really it can be just a simple fender piece that mounts above the pulley. How about some of you fabrications guys chiming in with some thoughts . . .

 

Very sorry to hear it Red Dog!

Lenin, I had the same thought as you: insufficient gap could heat that plate up a lot when the supercharger is not engaged (idle).

I bought my 62mm pulley from Rudy. Why does everyone say "the manufacturer" instead of saying who made them? I don't actually know who made these things.

 

Well, probably because someone "manufactured" them. LOL. I made Rudy aware this morning. I like the shroud idea. Certainly could be made. AS for the heat issue, I run mine with tight tolerances from day one, so that isn't an issue. Mine will turn the s/c even when not engaged. I can stop the s/c with my hand at idle. My guess would be at the time they installed the rivets, too much pressure may have been used, and a crack formed between the rivets. Just a guess at this point. Certainly an error was made.

 

I think you are on the right track. My only concern about the cover like the one in your picture is that the broken metal parts may potentially damage the SC shaft. (Pin ball comes to mind) I think a shield attached to the supercharger where the lifting bracket goes may be better. Let the broken pieces fall to the bottom.

 

That is my thought too but couldn't find an appropriate photo to post!

 

Standing here looking at mine. That would work lenin. It would be an easy fix. I could bend a nice aluminum piece to bring it up and over the pulley, then polish it out to look good. It would just be a flat piece, but would prevent the hood damage. Let's just hope this is an error on the part of the assembler and not a whole batch of bad pulleys.

 

OK. Let's call him by his name. Khang Vo. it was not Rudy.

 

When Rudy ran out of stock from the initial group buy, we located (and Rudy verified) the manufacturer who's name is Khang Vo. Khang still had a few pulleys available so I bought one directly from him. I have his contact information if anyone should need it.

 

Easy now. I have had it with Chinese junk lately....like my wheels....lol War with the Chinese just may take place sooner than later, thank you.

 

He is not Chinese . . . he's Vietnamese . . . LOL . . . I seem to remember we already went to war with the Vietnamese and that didn't turn out well.

Also regarding the pulley installation . . . I'm sure mine was installed with shims giving it the proper gap because I checked the gap with a feeler guage. The supercharger did not spin until the RPM kicked up to engage the clutch and spin the supercharger. The gap was not the issue in my case anyway . . .

 

Here is another picture of my failed Karmen pulley. Look at the discoloration on the backing plate. Looks to me like it is heat related.

 

If you can make it I will buy one! I'm just wondering if it should be steel instead of aluminum. I was thinking of 1/8" plate steel. Lots of impact force generated from a speeding projectile . . .

 

I think you may be right. It does look fatigued from heat build up. I will have Vietnamese company coming this weekend. I will have him cuss them out for me, if this is the case, lol. All kidding aside, I will take mine off later this week or next to look at the back side. Schedule sucks right now, but I won't drive it again until I check this out. Thanks for the photos...that helps a lot.

 

I'll get more photos of mine when I pull it off. Trying to deal with some family medical issues at the moment so no time to go out and wrench on the car.

 

If it does we are screwed, but I do like Chinese food especially rice dishes though. So I guess it ain't all bad.

That statement in not to be taken in any way shape or form as a political statement or a subliminal message for the Mandarin restaurant or Chinese restaurants in general, none of which I have a financial interest in.

Be nice eat rice.

 

Here's what I have. It does seem so have some heat build up, but looks fine all the way around.


As for plate or shroud. I will have a machine shop buddy give a quote on a nice shroud set up. Shouldn't be hard to do. In fact, flat plate, washer as a spacer should put it nicely over the top of the pulley.

 

In fact, no spacing is needed. Just need to flare it a bit to cover all of the s/c. Great idea. Lenin. Let's just hope it never has to work.

 

All credit should go to Chris Latemodel21. I'm just a "collaborator".