This can't be good

1more1 · 05-19-2024, 03:35 PM

Finally got around to doing my valve cover gasket. Pretty clean in there but noticed these lines on the cam lobes.

How fucked am I and what causes this? Car runs totally fine.

XutvJet · 05-20-2024, 12:36 PM

No concern. They're forging striations.

https://x3.xbimmers.com/forums/showthread.php?t=1791909

Shirazkhan · 05-20-2024, 02:46 PM

The wavy lines are normal,but that 1line thats straight?is that a reflection?

1more1 · 05-20-2024, 04:37 PM

Quote:

Originally Posted by XutvJet

No concern. They're forging striations.

https://x3.xbimmers.com/forums/showthread.php?t=1791909

Appreciate it! Found after a quick google. Looks very concerning though haha.

Quote:

Originally Posted by Shirazkhan

The wavy lines are normal,but that 1line thats straight?is that a reflection?

Not a reflection but couldn't feel it with my nail so not super concerned. Other lobes looked good.

RallyXer · 05-22-2024, 06:22 AM

Actually, those are grinding marks.

05-19-2024, 03:35 PM	#1
1more1 Private 45 Rep 90 Posts Drives: M235i 6MT EB Join Date: May 2018 Location: Ontario, Canada iTrader: (0)	This can't be good - wavy lines on intake cams Finally got around to doing my valve cover gasket. Pretty clean in there but noticed these lines on the cam lobes. How fucked am I and what causes this? Car runs totally fine. Attached Images
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05-20-2024, 12:36 PM	#2
XutvJet Major General 5829 Rep 5,477 Posts Drives: 2011 Cayman Base, 2016 M235 Join Date: Mar 2016 Location: Kansas City iTrader: (-1)	No concern. They're forging striations. https://x3.xbimmers.com/forums/showthread.php?t=1791909 __________________ The forest was shrinking, but the Trees kept voting for the Axe, for the Axe was clever and convinced the Trees that because his handle was made of wood, he was one of them.
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05-20-2024, 02:46 PM	#3
Shirazkhan Second Lieutenant 56 Rep 200 Posts Drives: F22,GO1,i20,POLO,BANTAM,BREZZA Join Date: Jan 2021 Location: South africa iTrader: (0)	The wavy lines are normal,but that 1line thats straight?is that a reflection?
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05-22-2024, 06:22 AM	#5
RallyXer New Member 3 Rep 10 Posts Drives: BMW M235i Xdrive Join Date: Apr 2024 Location: Goodrich, MI iTrader: (0)	Actually, those are grinding marks.
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