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Weistec Stage 3 Supercharger Issue/Concern

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Weistec Stage 3 Supercharger Issue/Concern

 
Old 01-28-2016, 09:41 AM
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2009 Mercedes Benz C63 AMG PP (Weistec S3 Supercharged)
Weistec Stage 3 Supercharger Issue/Concern

I drive a C63 that I had the Stage 3 Supercharger and Weistec 722.9 Bulletproof Tranny installed.. . . . I have not the tracked the car since the supercharger & tranny were installed and only did two 1/4 mile runs previously when it was just a normal OE tune. I have had the system installed for about a year and a half at this point which equates to about 3000-4000 miles, if that. i basically take it to car shows and cruises. Forgive me as I do not know all the terminology, but basically my car was running rich (getting too much fuel) all of a sudden. I could not get into boost at all and it seemed to be hesitating/unresponsive especially when I gave it even a small amount of gas so I immediately took it to my tuner who installed the system and asked him to look it over. He removed the belt from the pulley and the pulley was pretty much spinning freely by hand (which it really shouldn't), there should be some work to turn it. After removing the front cover of the supercharger we saw that the three prongs that go into the supercharger from the snout were all snapped off completely. Pieces were all there and not floating around. I sent pics to Rod at Weistec and after speaking with Rod he said he had heard of this happening before and we could send it to them to rebuild at no cost. We packed it up and shipped it overnight to get replaced. The package was lost by Weistec which delayed the process, but then it was located, fixed and shipped back to us. My tuner put everything back together and we started the car up no problem but now the supercharger was making noise that it wasnt before....kind of the sound of something rattling around inside it but hard to explain. So I didnt test drive it because we were concerned. We emailed Rod again and sent him a video with the sound so he could hear it. he said there must be something inside it and to remove it and inspect. It was removed again and inspected but nothing was inside but there was some show of scoring inside the SC. I sent him pics and he asked to send it in to him. At this point it is currently at Weistec as of Tuesday and Rod said it will take about a week to inspect it. This is a very concerning issue to me as the supercharger is basically brand new and obviously very expensive. Obviously there are risks with after market work but we went out of our way to do it right. Anyone had anything similar happen? As of now Weistec has been very good and a stand up company overall. I am confident they will be able to handle whatever is going on but was curious if anyone else had this issue or had any thoughts? Thanks
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Old 01-28-2016, 11:07 AM
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I would wait and see what Weistec comes back with they may just send you a brand new one or do a full rebuild of yours, they stand behind their product from what I know of.
Good luck keep us posted as to the out come.
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Old 01-28-2016, 03:04 PM
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Thanks. I will keep everyone posted. I have confidence in them.
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Old 01-28-2016, 07:17 PM
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I'd be more worried about the piece of metal that went through your engine.
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Old 01-28-2016, 07:21 PM
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I'm not so sure that is even possible. Everything is closed up so to get a piece of metal into the supercharger would be impossible. I'm fairly certain something inside the SC failed/broke causing the initial problem of the prongs on the snout snapping. They didn't just randomly snap. I'll let u guys know what Weistec determines. I'm anxiously waiting.
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Old 01-28-2016, 07:50 PM
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Originally Posted by Merc63 View Post
I'd be more worried about the piece of metal that went through your engine.
My thoughts exactly.

Anybody look into the cylinders? compression/leakdown results?
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Old 01-28-2016, 07:53 PM
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Ah yes because ther is the heat exchanger right. That's good news. You said this piece wasn't found, where did it go?
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Old 01-28-2016, 08:07 PM
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Originally Posted by Footbrawler80 View Post
I'm not so sure that is even possible. Everything is closed up so to get a piece of metal into the supercharger would be impossible. I'm fairly certain something inside the SC failed/broke causing the initial problem of the prongs on the snout snapping. They didn't just randomly snap. I'll let u guys know what Weistec determines. I'm anxiously waiting.
The missing prongs had go go somewhere, right? If you can't find every single piece, the others had only one direction to go...
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Old 01-28-2016, 11:03 PM
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Can we see some pictures? I have never heard of a modern twin screw failing in this fashion before. I would assume that is a pretty uncommon failure. Weistec seems to be a super solid company so I wouldn't worry about that part. It seems there was after it was rebuilt that they did not catch.
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Old 01-28-2016, 11:25 PM
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Ouch. That's not good.
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Old 01-30-2016, 06:46 AM
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It is very unlikely (almost impossible) for the drive pins, or anything from the SC gearbox, to get into the engine.
The typical causes for twin-screw drive pin failures are: Shock-loading, like the engine bouncing on the limiter; Foreign matter entering the intake & stalling the rotors; Misalignment; Bearing overload/failure.
Chances are that the rumbling noise is from the front bearings have been compromised from debris off the broken pins or coupler. A relatively easy fix, & unlikely to have caused any long-term damage (once the bearings are replaced).
It is not extremely uncommon - I have seen a couple of similar instances with that style of supercharger.

I am told Weistec are good guys & stand behind their product. You should be fine.
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Old 01-30-2016, 09:42 AM
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Believe me, you are in good hands with Weistec. The product is proven to be more than reliable. I have given my car a LOT of 1/4 and half miles runs under severe abuse and never have an issue with the blower. And anytime a need info or advice they always respond. Just give them time to solve the problem
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Old 02-09-2016, 07:12 AM
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Well, I guess we will see. I believe we found all pieces and even if we didnt find them all there was no way for them to really get inside the unit. Something is weird about this but I havent pinpointed it yet. As of this incident I have felt like i was in good hands with weistec, however, I must admit, they have shown no sense of urgency on this and havent really bothered to follow up with me unless I hunt them down. They seem to avoid phone conversation even after multiple requests for them to simply call me. And as far as emails, they only email me after I reach out to them several times. They have had the unit for a full two weeks now and they have given me zero feedback. Beginning to lose faith in them or at least some trust. sad thing is, I was planning on building the motor soon, however, I am having second thoughts with the lack of urgency. I'll try to post the two pics from my mechanic in a second. I'll keep everyone posted once i eventually hear back with some solid information. Thanks for all your kind words.
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Old 02-09-2016, 07:16 AM
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2009 Mercedes Benz C63 AMG PP (Weistec S3 Supercharged)
Pics of Inside of Supercharger

Here are the pics....I honestly dont really know what specifically I am looking at. I see the excessive scoring my mechanic mentioned but dont really see much else.....
Attached Thumbnails Weistec Stage 3 Supercharger Issue/Concern-sc-pic-1.jpg   Weistec Stage 3 Supercharger Issue/Concern-sc-pic-2.jpg  
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Old 02-09-2016, 07:22 AM
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Additional Pics

Here are the two pics I have of when the prongs broke. As you see in both pics they are still all in place, just snapped.
Attached Thumbnails Weistec Stage 3 Supercharger Issue/Concern-sc-pic-3.jpg   Weistec Stage 3 Supercharger Issue/Concern-sc-pic-4.jpg  
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Old 02-09-2016, 10:31 AM
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The only issue I have ever had with Weistec was getting someone knowledgeable on the phone. They put out very advanced products, but when semi technical questions arise I had trouble reaching someone in their calibrations department.

When I finally did talk to someone I do not believe he was one of their tuners, but he was more advanced then the sales person on the phone.
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Old 02-09-2016, 10:53 AM
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We will see.....been dealing with them on this same issue for quite a while and do not feel like they have been very responsive as of now. I have heard mixed opinions and had mixed experiences with them directly as well.....there will always be advocates but the proof is in their response/resolution. we will see.....
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Old 02-09-2016, 07:30 PM
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Originally Posted by Footbrawler80 View Post
Here are the pics....I honestly dont really know what specifically I am looking at. I see the excessive scoring my mechanic mentioned but dont really see much else.....
Those rotors and housing walls look horrible
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Old 02-16-2016, 04:05 PM
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Been reaching out to Weistec....they have had my supercharger since Jan 21. I have asked them numerous times to call me to discuss and give me and update with zero calls as of now. I'm beginning to get a bad taste in my mouth for a company whom I have spent a ton of money with and planned on spending a ton more with to build the motor. Definitely having second thoughts.....very disappointed with their lack of communication. I'll update once I eventually get a resolution.
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Old 02-16-2016, 04:48 PM
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Who are you speaking to there??

Speak to STeve direct
Call him now
Dont wait for them
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Old 02-16-2016, 04:57 PM
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I have been speaking with Rod & Zach. This has definitely dragged out more than I expected. Up until now I've had great experiences with Weistec. I'll try Steve. Thanks for the input.
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Old 02-16-2016, 05:23 PM
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Rod has resigned now and Zach might be under the pump

Call steve the owner direct he will be able to help or if not point you in the right direct
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Old 02-16-2016, 09:00 PM
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I'm far from an expert, but ya, them rotor's and housings looked shot and need replacing. Tough to make a seal and create pressure with all the gouges going on there...
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Old 02-16-2016, 09:06 PM
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Did the bearing go and the rotor hit the wall? Looks like you need a new unit. How many miles on it?
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Old 02-18-2016, 11:39 AM
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Less than 2000, and zero of that on track
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