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      12-20-2025, 12:20 PM   #29
Chrisyphus
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Drives: e92 M3, Model 3 Performance
Join Date: Jan 2024
Location: Danville, Va.

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Quote:
Originally Posted by Assimilator1 View Post
Re anodising, is it likely to be broken when the covers are clipped on?
If not, then the covers should last a good while then?
(Hitting it with a hammer is hardly a fair comparison )
Maybe? I would not be surprised either way, to be honest, and any speculation beyond that is just a guess.

I did not intend for hitting it with a hammer to be a fair comparison; I was trying to point out that saying the surface is so much harder is only one component of the relevant properties.

Quote:
Originally Posted by Assimilator1 View Post
19w power loss!! I'm commissioning those Ti VANOS covers now!
In this thread, a man plans his future bankruptcy

Quote:
Originally Posted by Assimilator1 View Post
Btw, when you said 'they didn't pull the covers back off to inspect', did you mean VANOS covers or valve covers? I assume the former, but they did say they removed the 'rocker[sic] covers' multiple times.
Yeah, talking about the VANOS covers themselves. I feel like if they took them off, they would have said so, but again, I am speculating.



Re-reading my previous post on the topic, I sound more critical of Ventrax than I am. If I had to choose an aluminum clip-on cover, I would almost certainly select theirs and then never think about it again. They have done good work, and most of their design decisions make perfect sense.

Quote:
Originally Posted by Assimilator1 View Post
Re BMWs pdf, do you recall it's name?
https://ia800902.us.archive.org/26/i...2520Engine.pdf

The whole thing is neat, but the relevant information is on page 13
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