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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, Apr-20-2017, 03:15:30 PM   #11
MoPower
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Default Re: is my noise from loose cam gear bolts?

Just picked up my new bolts, sealing plate, chain tensioner guide and camshaft alignment tool from the BMW dealership yesterday. I was pleasantly surprised to see they only charged me $80 for the camshaft alignment tool!

What are the "A" and "E" markings on the camshaft alignment tool for? I would assume "E" is for Exhaust side but in the DIY tutorials "A" side is on the exhaust cam and "E" side is on the intake cam.
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Old Thu, Apr-20-2017, 03:28:28 PM   #12
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Default Re: is my noise from loose cam gear bolts?

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Originally Posted by MoPower View Post
Just picked up my new bolts, sealing plate, chain tensioner guide and camshaft alignment tool from the BMW dealership yesterday. I was pleasantly surprised to see they only charged me $80 for the camshaft alignment tool!

What are the "A" and "E" markings on the camshaft alignment tool for? I would assume "E" is for Exhaust side but in the DIY tutorials "A" side is on the exhaust cam and "E" side is on the intake cam.
I'd suggest getting the Beisan seals for the sealing plate-- they're made out of the proper material for the job, so they won't fail again!

Don't forget to loctite the bolts.

Amusingly (annoyingly?), "intake" in german starts with E and "exhaust" starts with A-- so E is intake, A is exhaust.
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Old Thu, Apr-20-2017, 03:59:20 PM   #13
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Default Re: is my noise from loose cam gear bolts?

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Originally Posted by Obioban View Post
I'd suggest getting the Beisan seals for the sealing plate-- they're made out of the proper material for the job, so they won't fail again!

Don't forget to loctite the bolts.

Amusingly (annoyingly?), "intake" in german starts with E and "exhaust" starts with A-- so E is intake, A is exhaust.
Ahh I see
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Old Sat, Apr-22-2017, 05:28:51 PM   #14
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Default Re: is my noise from loose cam gear bolts?



This is the result of my morning. Broken chain tensioner guide and every single bolt on my intake cam gear was loose! As in I was able to just unscrew the bolts with my fingers! The cam gear was loose and free to rattle around so I'm going to assume that was the source of my noise at 2500 rpm.

Some of the bolts were showing signs of shearing so I am very lucky to have caught it before they broke.

Now I'm just waiting for the USPS to deliver my Beisan pump disk and vanos seal rebuild kit so I can finish up and put it all back together. Huge thanks to everyone for their help!


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Old Sat, Apr-22-2017, 09:13:51 PM   #15
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Default is my noise from loose cam gear bolts?

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Originally Posted by MoPower View Post


This is the result of my morning. Broken chain tensioner guide and every single bolt on my intake cam gear was loose! As in I was able to just unscrew the bolts with my fingers! The cam gear was loose and free to rattle around so I'm going to assume that was the source of my noise at 2500 rpm.

Some of the bolts were showing signs of shearing so I am very lucky to have caught it before they broke.

Now I'm just waiting for the USPS to deliver my Beisan pump disk and vanos seal rebuild kit so I can finish up and put it all back together. Huge thanks to everyone for their help!


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Can't beat my bolts. Luckily all yours are intact. Surprised there isn't more damage to the bolts given then we're all loose.



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Old Mon, Apr-24-2017, 05:41:02 PM   #16
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Default Re: is my noise from loose cam gear bolts?

Just an update for anyone who searches for the issue I was having with the rattle noise at 2500-3000 rpm. My engine is back and running strong with no more noise after replacing the cam gear bolts, chain tensioner guide and tensioner. Most likely the noise was coming from the loose cam gear bolts but since I already ordered a new timing chain tensioner I went ahead and replaced it.
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Discussing is my noise from loose cam gear bolts? 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)