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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Sep-14-2017, 03:00:51 AM   #1
Chapelle
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Default Camshaft Wear

I started my VANOS overhaul tonight. Good news is it looks like the hubs are still in tact at 87k miles.



However, I noticed these strange wear marks on some of the cam lobes which has me concerned.





Also, I noticed cylinders 4-6 spark plug gaskets had a small deposit of some kind of dirt/sand on one small side of the gasket. A small amount dropped onto the camshaft which I tried to gently wipe most of it out.



Has anyone experienced these events? Anything to be concerned about? I wasn't thrilled about the browning throughout. Oil changes he past two years of my ownership were done less than 3000 miles due to minimal driving and changes before winter storage. Great records from the last owner which indicates 5-6k mi changes. Last adjustment was done at 65k.
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Old Thu, Sep-14-2017, 03:04:19 AM   #2
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Default Re: Camshaft Wear

If you're using TWS, you're engine will have a gold coating no matter how often you change oil.

I can't see anything odd on the cam lobes. Do the followers look OK?


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Old Thu, Sep-14-2017, 03:38:07 AM   #3
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Default Re: Camshaft Wear

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Originally Posted by bigjae1976 View Post
If you're using TWS, you're engine will have a gold coating no matter how often you change oil.

I can't see anything odd on the cam lobes. Do the followers look OK?


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Not sure if you can see in the pics but there are some noticeable scratches. I didn't notice anything crazy on the followers but I'll see if I can snap a pic tomorrow.
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Old Thu, Sep-14-2017, 06:05:44 AM   #4
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Default Re: Camshaft Wear

Doesn't look bad too me, it's not even on the lobe really.
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Old Thu, Sep-14-2017, 02:13:02 PM   #5
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Default Re: Camshaft Wear

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Originally Posted by rockflageagle View Post
Not sure if you can see in the pics but there are some noticeable scratches. I didn't notice anything crazy on the followers but I'll see if I can snap a pic tomorrow.

Looks like someone scratched at the TWS gold coating. I wouldn't worry about it.


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Old Thu, Sep-14-2017, 07:24:03 PM   #6
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Default Re: Camshaft Wear

My exhaust cam had wear like your 3rd pic from the top except a bit worse. I replaced the cam with another used OEM cam. If I had to do it again, I'd just put new Schricks in there

Your wear doesn't look too bad and I'd just check back in the next inspection.
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Old Thu, Sep-14-2017, 08:34:03 PM   #7
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Default Re: Camshaft Wear

Anybody have feedback for the small specks of dirt in pic 4?
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Old Thu, Sep-14-2017, 08:39:38 PM   #8
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Default Re: Camshaft Wear

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Anybody have feedback for the small specks of dirt in pic 4?

Random spooge from when you removed the valve cover? Don't think it's a big deal either. I would just use a shop vac to clean it up if it bothers you.


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Old Fri, Sep-15-2017, 04:25:41 PM   #9
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Default Re: Camshaft Wear

Can this occur if the valves are spec'd on the tighter side?
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Old Fri, Sep-15-2017, 05:18:07 PM   #10
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Default Re: Camshaft Wear

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Can this occur if the valves are spec'd on the tighter side?


I was thinking the same. I'll let you know after I re-time and check clearances.
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Discussing Camshaft Wear in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)