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08-04-2023, 03:14 PM | #23 |
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My SLON covers are still good too from what I can tell.
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08-04-2023, 03:58 PM | #25 | |
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i'd also love confirmation from more SLON users that theirs are good. i had them on my e92, was going to put them on the e90 but will wait now that this has popped up...
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Current '21 DG X5MC, '22 X5M50i, '11 E90 M3
Recent Past '12 E92 M3 ZCP, '08 E93 M3, '18 F80 ZCP, '04 E46 M3 I think I have an M3 problem. |
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08-04-2023, 05:16 PM | #26 |
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Root Cause Discussion
Metals have different thermal expansion rates, fatigue life, and crack propagation rates. Aluminum and steel expand at different rates and have different fatigue lifes. Perhaps the different vanos spring cover makers are using different metals for their parts? Moreover, over time with hundreds of thermal cycles, I speculate dimensional degradation occurs due to the thermal cycling and then the spring clips come loose. Probably one at first, then more and more of them as the hooked tip rubs and vibrates on the spring mechanism just as Redd mentioned. Interestingly, Steve Dinan and Carbahn solved the issue with steel spring cover end plates - without any clips - which attached as "end caps" using the central am bolts. The Dinan vanos covers are $100 for the kit which contains 4. However, I recall reading somewhere that when using the Dinan vanos cover kit the motor has to be retimed (cam timing) but I could be wrong on this particular aspect.
From the Website: CarBahn VANOS Spring Plate Kit for E90/E92/E93 M3 S65 Engine. The BMW S65 Engine can suffer VANOS Mechanism failure due to the plastic spring plate holding the VANOS Gear Mechanism becoming brittle over time and failing. This failure can lead to an engine failure and a very expensive engine rebuild. These VANOS Spring Plates are designed to address and fix the Plastic Spring plate issue by replacing it with a steel spring plate. Contains 4x CarBahn VANOS Spring Plate https://carbahn.com/product/cbs65-60...or-s65-e9x-m3/ . .
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08-04-2023, 05:35 PM | #27 | |
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The fitment was perfectly tight; I struggled to get some clips engaged because of the precise fitment. That being said, I did check every month or so for a while, was afraid this was always a real possibility. |
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DrFerry6734.50 |
08-04-2023, 06:45 PM | #28 | |
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This design is only found on the “Original SLON” covers. The cover with the ribbed design in the pictures looks like a knockoff that is being manufactured and sold overseas. A brief research will show a seller in Singapore selling these ones without the SLON name on it. There might be a few others out there that we do not know about, but it is safe to say, we need to be super careful now and buy from trusted vendors only. |
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08-04-2023, 06:47 PM | #29 | |
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https://www.carousell.sg/p/e92-m3-me...rs-1203251533/ |
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08-04-2023, 06:52 PM | #30 | |
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https://www.carousell.sg/p/e92-m3-me...rs-1203251533/ The Euro Power Motorsports VANOS covers are flat with no engraving or branding on them, nor do they have a ribbed design. |
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DukeofAlexandria633.00 |
08-04-2023, 06:53 PM | #31 | |
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08-04-2023, 07:33 PM | #32 |
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Hang on just a second here. To massively clear something up
This link: https://www.carousell.sg/p/e92-m3-me...rs-1203251533/ Which shows this picture: Is absolutely SLON. How do I know? Because that's MY picture of MY engine bay. Here's the original for good measure. Which came from this post: https://www.m3post.com/forums/showpo...&postcount=199 |
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08-04-2023, 07:55 PM | #34 |
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Well....... things are going to get a little spicier here.
This encouraged me to check my covers. I've checked them at every oil change since install, which was done in 11/2021. I have the original batch SLON covers. AND THEY ARE FAILING. There is a pretty substantial size difference between the clip that is still on, and the one that has failed. |
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08-04-2023, 08:09 PM | #35 |
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This is not how I wanted this thread to turn out. The intention was to share info so E9x M3 owners can be aware and check their vanos covers. Instead it has degraded into a blame fest with certain parties trying to slander Malaysian members to protect themselves.
Abdul, as much as anything I was trying to protect MPower's name in this but what Matt has done on FB is unacceptable. Below are the brands of VANOS covers that we know of in Malaysia and how many have been affected. 1. China knockoff (sourced through BOOF-M3) - 10 sets installed, 5 sets showed loose clips 2. MPower/Euroco***x - 2 sets installed, 1 set showed loose clips (Romzan's) 3. Slon - 1 set installed (mine), no loose clips These are the facts. Here's another fact - at no time has Romzan sourced for or sold VANOS covers or any other parts to anyone in the Malaysia M3 community. Please tell Matt to stop slandering Romz just because you all don't want to ask your buyers to check their covers. Be responsible, do the right thing. |
08-04-2023, 08:10 PM | #36 |
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I was able to get a flat head screwdriver in there and was able to push pry the clip back into position.
It is entirely possible this is a natural failure, or its also possible that the thing was installed wrong from the start, and just wore down the tab. Anyway, at this point I guess I need to stop driving the car, and look at changing to a washer style solution. My piggy bank is not going to be happy... |
08-04-2023, 08:17 PM | #37 |
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I don’t know anybody locally that is comfortable doing the timing on this engine. The dealership near me is too new for me to have confidence in them. This is a disappointing development for sure.
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DrFerry6734.50 |
08-04-2023, 08:18 PM | #38 | |
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Sorry. I’m not good at attaching pics. Pic 1: FB of the person who blew his engine. It has the ribbed design. Pic 2: OP’s picture. You can clearly see the ribbed design. The pic that I added was from the product link from the guy selling in Singapore. He stole your pic and is using it. You should probably reach out to him. The internet is crazy. He’s literally using your pic and selling knockoffs. |
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08-04-2023, 08:19 PM | #39 |
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I purchased mine from Euro Power and installed them a few weeks ago. Thanks for your input, Abdul I appreciate very much that you chimed in here. I think I’ve had two track days and maybe 400 miles since install.
I did 6 engine restarts and marked the tabs of the closest cover with a sharpie so I could confirm I was seeing fresh area. It took 5-6 starts to see each tab. My first inspection is a Pass. But yeah, ugh. I’m 100% glad I did this job because my plastic covers just crumbled into my hands with almost zero effort when they came off. |
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08-04-2023, 09:23 PM | #40 | |
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Going to check my Slon's and will report back here. But when Slon's came out - a few members that installed them did report incorrect installations where not all tabs were verified as properly seated. |
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08-04-2023, 09:28 PM | #41 | |
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A small number of failures doesn't necessarily indicate a bad product or a bad vendor, and vendors are free to chime in and comment as well. Obviously if we see a trend of Vendor X failing, and 0 accountability and response from the vendor, we can draw our own conclusions... |
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08-04-2023, 10:50 PM | #44 |
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A few updates. Used a flathead screwdriver to push the clip back on.
Started and stopped the car about 20 times, checking the vanos covers between each attempt. Looks ok. Took it out for a drive. Gave it a number of high RPM blasts. Pulled back in the garage, checked the vanos covers again. Started and stopped the engine about 10 additional times, checking in between each attempt. The vanos cover appears to look ok. Seems to be sitting fine, and the offending area seems about as tight as all the other tabs. At this point there's a number of possible paths this could go. 1. The SLON vanos cover really did fail and its a matter of time before that tab pops off again. 2. There was an install error that went undetected until this moment in time. I have a picture from the install on the passenger side, and everything looks straight, but you can't see every tab in the photo. At this point, I think I'm going to continue driving it, but carefully monitor this, and check after each drive. Its not a daily driver, so I have some flexibility here. |
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