APR pulley belt shredded

^^ no west, there are at least 3 reported blown REVO-tuned engines. Don’t try to derail Chino’s thread.

It’s funny how nobody gets a picture of those revo engines and how the owners aren’t on the Internet. I heard over 2 billion people are on the Internet.

Chino may have been sold an incorrectly machined pulley that blew up his supercharger. Now this poor APR dealer is out $8000 on a new blower. I don’t know who in their right mind would be an APR dealer or an APR customer when it comes to things like this.

West makes a point, BUT there are no facts that it was caused by the tune/pulley. This could’ve happened to me 5000 mi down the road stock vs 800 mi tuned. I might drive it spirited, as in holding the revs between 3-4k to punch it in beautiful NYC traffic but I’m sure this engine is strong enough to withstand that. Not like I’m driving it like Jay & Silent Bob on 1st gear at 7k rpm for hours.

The engine is not blown, so we can clear that up. As Saki mentioned, it will feel like an NA V6. To me a blown engine is something that prevents the car from moving completely.

The dealership where I’m taking it is aware and knows it’s not the tune, as he is very close with the owner of the shop, so they will do what they can.

Blown supercharger. Yeah the tune and pulley made the supercharger explode. Apr checked the box for ruining the SC bearing by accident. Idiot.

Chino I’d advise you to edit this thread and the one on az.

If they’re getting this fixed on warranty I’d say that someone is lying to audi somewhere. Audi will have their curiosity piqued as this is a rare issue we’ve never heard of, and they’ll probably be thinking ‘wonder if there’s anything on the Internet…’ which will lead to your dealer tech getting ass raped / fired in all likelihood.

you are dumb it is seized bearing, could be manufacturing defect in that bearing, the motor is not blown

He can’t edit because of his post count. And I’d prefer not to revise/delete other members’ posts. What I can do is move this entire thread out of public view for the time being. Let me know.

It’s funny that everyone’s engine works fine. Sometimes when you add APR something completely unrelated blows up the motor. Every time, it’s something unrelated. Our excuse the last time APR blew a motor was that the car was in a previous accident or had a salvage title or got some water damage? It was the guy whose motor blew up on track, which is a really great time for it to happen.

Thank you Clochner, please move it out of public view for now. My intention is not to hide it, but to know what caused the issues and for my knowledge (and others).

Updating the thread as repair has been completed and warrantied. Audi tech diagnosed the car and found that it was due to a damaged throttle body, and not a frozen SC bearing (no Stage 3…sike). He also further checked on the SC to make sure that nothing was wrong, as well as necessary precautions and found nothing.

I’ll be picking up the car later tonight and will post what it says on the repair sheet, as I’m not too technical about cars (but learning everyday from AR). Not going to tune the car until next week or maybe next month, to make sure that it’s really fixed and no more surprises occur.

Damaged throttle body caused a belt to shred?

Yeah, gotta say, I’m a little lost on that one. There has to be more to the story than that.

I asked them and they said that there was a code related to air temps being too high which caused something to seize. Here is the invoice:


http://i923.photobucket.com/albums/ad71/loco075/0183032d-b2d2-47af-8e30-dcdf3ef7dc11_zpsvimf25e3.jpg

I know I can’t explain it any better, but anything I should be more aware? Suggestions welcomed should something (knock on wood) happens again?

Hmmm… I mean, it sounds like all they found was the TB fault, but they didn’t find any actual problem and their recommended course of action for that fault was to replace the TB by default. I don’t understand how an obstruction or mechanical fault would cause the belt to shred… It almost seems more likely that the aftermath of the shredded belt could cause the TB fault after the fact.

My guess is whatever caused the belt could still be present, but time will tell I suppose. I’d just keep an eye on it. The things I would expect to cause the shredded belt would be some type of misalignment of the belt or one of the pulleys/tensioner, an issue with the belt itself, or something seizing/creating excessive heat.

Yeah i don’t think your problem is solved :slight_smile: Free new parts are always nice though.

Talked with my shop and they definitely do not agree with the TB replacement (as jran mentioned) and they heard the SC sound very different from other working SC’s. I’m sure when you hear the same sound over and over again (just like a guitar), you know when it’s off tune.

I’m having them revisit this, as I don’t think it’s reasonable for me to reinstall the pulley to find out it fails again in a couple of miles and have to repeat this whole process. In the meantime, I’m going to run it hard to see if I can cause it to happen.

can you get a picture of the front of the pulley (plastic cap off) and how close the sc shaft is coming out now that you have the car back? im still thinking its not all the way on.

Will do, going to get some sound recording also for you guys to hear. Also, the OEM pulley has been put back, so it’s all stock now.

Yeah, keep us posted on what you find. It could have possibly been something with the way the stage 2 pulley was installed or the belt itself, and both of those are out of the equation for now. I think running it hard for maybe a month or so is a good idea. If all goes well, then reevaluate going back to the stage 2 pulley at that point. I think a month is enough time to prove out that there are no other issues at play or damage to the S/C.

Here are is a pic:

http://i923.photobucket.com/albums/ad71/loco075/IMG_20150918_222942_zps0xhdjasz.jpg

And video:
http://vid923.photobucket.com/albums/ad71/loco075/VID_20150918_221903_zpsdtbuumgc.mp4