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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 02-16-2015, 02:47 PM   #1
ironicinori
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Is the "Valve Adjustment" in Inspection 2 the same as VANOS

Hello, I am getting Inspection 2 done on my 2006 M3 at 60,000 miles. Included is a "valve adjustment". I have also heard that when the miles start to rack up, the VANOS seals WILL corrode and go bad eventually.

Does anyone know if the work they do in Inspection II is correcting the VANOS decay? Or should I have the mechanic install new vanos seals from Besiansystems or something as well.
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Old 02-16-2015, 10:19 PM   #2
Kansas Corey
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They are different. Within Inspection II there is no vanos work. In fact, I don't think it's "officially" within any of the maintenance checklists regardless of mileage.

Valve adjustments (part of Inspection II) are the intake and exhaust valves on the head. Vanos unit controls cam shaft timing (both exhaust and intake camshafts on E46 M3) and is bolted to the front of the engine.

Last edited by Kansas Corey; 02-16-2015 at 10:22 PM.
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Old 02-17-2015, 06:29 PM   #3
Iceyankee-TSI
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You are correct Kansas Corey. There is no Vanos work included in Inspection 2. The hot topics on S54 engines right now other than valve gap adjustment are the following:

1. Vanos oil pump tabs verification (susceptible to break at any mileage)
2. Intake Camshaft sprocket bolts failure(shearing off)
3. Upper right timing chain tensioner failure(tip of tensioner breaks)
4. Vanos solenoid o-rings leak (o-rings between the vanos unit and it's solenoid deteriorate)

I can't think of anything else.

Last edited by Iceyankee-TSI; 02-17-2015 at 06:30 PM.
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Old 02-22-2015, 12:50 PM   #4
dafoe
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Quote:
Originally Posted by ironicinori View Post
Hello, I am getting Inspection 2 done on my 2006 M3 at 60,000 miles. Included is a "valve adjustment". I have also heard that when the miles start to rack up, the VANOS seals WILL corrode and go bad eventually.

Does anyone know if the work they do in Inspection II is correcting the VANOS decay? Or should I have the mechanic install new vanos seals from Besiansystems or something as well.
Hey! Just like the others have said, there's no vanos work in Inspection II. I'd ask your mechanic though to verify, and take pics, of the two exhaust camshaft driver tabs. One you'll have verification if they are broke, and two you'll know they opened up the engine to do the valve adjustment.

If the tabs are in tact proceed at some point with all the Beisan fixes. Or get an already rebuilt vanos from Dr. Vanos. His units have updated seals, and smaller oil pump disk holes that will remedy the broken tab issue.
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