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04-11-2024, 09:17 AM | #1 |
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Vanos Covers
How good are the vanos covers from Evolve? Im doing NRW valve covers and plugs and everything related very soon. I might as well do the vanos covers as well. What are y'alls thoughts?
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04-11-2024, 11:41 PM | #2 | |
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I知 also doing the throttle actuators (better rebuild ones) at the same time, as well as the vanos covers. However I opted for the Mporium bolt on vanos covers, I知 not saying the Evolve ones are not good, but the bolt on ones from Mporium look to be a better solution in my personal opinion. The Mporium ones are a bit more labour intensive to fit though, as they require the motor to be re-timed, as they involve removal and replacement of the vanos stretch bolts (if you get the complete kit from Mporium it includes OEM stretch bolts and also the gaskets for the vanos cover housing). |
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04-12-2024, 09:16 AM | #3 | |
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Johnny E9293.50 |
04-24-2024, 01:30 AM | #4 |
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I have a friend whose Vanos unit spring exploded and put a hole in the valve cover and upper timing cover. After seeing this I don't think the clip-on covers can handle that force. Something to think about.
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04-24-2024, 02:00 AM | #5 |
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Your friend had bigger problems than his choice of vanos caps if his spring exploded. The plastic caps would never have prevented that either. Nothing short of Carbahn or Mporium caps would have worked but again, what causes the spring to dislodge in the first place?
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04-25-2024, 02:03 PM | #6 |
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I知 going to get my vanos covers changed and NRW valve covers fitted.
Can this be done without changing the oil - or does the oil need to be drained? I知 asking because my oil is only a couple of thousand miles old, so if it doesn稚 need to be drained I壇 rather leave it. |
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04-26-2024, 07:42 PM | #8 | |
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05-04-2024, 10:09 PM | #9 |
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I have the Evolve caps. They're developed by Mr. Vanos so I don't expect them to have issues, but only time will tell. The MPorium/NRW caps are a superior alternative, but the installation is much more involved than the snap on covers. Something to keep in mind if you're planning to DIY.
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Yesterday, 06:29 AM | #10 | |||
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Agreed they're stronger, but overkill IMO. Quote:
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Assuming something else didn't happen, what probably happened to your friend's car is that the plastic cover dis-integrated and the spring gradually walked off. These covers do restrain the spring, but clearly their isn't much force involved or the plastic covers would've failed a long time ago. Clip on ally covers are plenty strong enough to keep the springs in place.
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Today, 10:37 AM | #11 |
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Regarding clip-on vs captured design...It comes down to whether you want to truly bullet-proof it, or get by with another part that can potentially come loose. I have sold numerous sets of my chromoly cups to owners who have had clip-on covers loosen or come off. Slon's original part seems to be more resilient than the dozens of "me-too" copies new to the market. If you want to go with a clip-on set, support the originator of the design.
The NRW valve covers are a welcome solution, however when it comes to their captured aluminum vanos caps which appear to almost identically duplicate our Mporium chromoly cups, we recommend to do more research. Steel is the risk-free material for this location as this style spring cover replaces the steel washer under the central bolt and is under significant clamping force responsible for maintaining cam timing. You don't replace a steel washer with an aluminum variant. Years ago we were experimenting with aluminum alloys here before settling on chromoly for longevity. |
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