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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 Tue, Jun-12-2018, 03:15:19 AM   #1
Kleedzine
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Default VANOS removal tip

Hi
I am DIYing VANOS overhaul with FULL Beisan system, and stuck at pulling the vanos unit off of the engine.
I have fully retard both camshafts (timing holes are perpendicular to the engine block), and still no luck to pry off the unit.
From various DIY thread and video, there's nothing I have missed.

Is the vanos unit usually hard to remove?

Please let me know if there's any hidden tips.

also, typical 24mm open wrench does not fit on the camshaft hex.
I have been sourcing the wrench, but no success, so I have used adjustable wrench. Still, I am trying to find the right tool for it.

For me, it seems 24mm wrench is a bit loose side of fitment on the hex. is 15/16" wrench fit better? since imperial one is a little smaller.

Any helps, recommendation and comments are welcome.

Peace!
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Old Tue, Jun-12-2018, 03:41:21 AM   #2
bigjae1976
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Default Re: VANOS removal tip

Itís a 24mm wrench. You probably need to grind it a little to make the open end a little thinner.

As for it coming off, I usually stick a pry bar in there and GENTLY pry the VANOS. Pry too hard and youíll bust the splined shafts.


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Old Tue, Jun-12-2018, 04:36:58 AM   #3
mrgizmo04
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Default Re: VANOS removal tip

Quote:
Originally Posted by bigjae1976 View Post
Itís a 24mm wrench. You probably need to grind it a little to make the open end a little thinner.

As for it coming off, I usually stick a pry bar in there and GENTLY pry the VANOS. Pry too hard and youíll bust the splined shafts.


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Pry bar and gently? Lol

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'85 528e 164k miles (sold)
'05 M3 6MT coupe

All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.
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Old Tue, Jun-12-2018, 04:41:34 AM   #4
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Default Re: VANOS removal tip

Pry from the two sides like in this Beisan pic. I used jeweler's flat head screwdrivers. Takes a bit of force.
Quote:
Originally Posted by Kleedzine View Post
Hi
I am DIYing VANOS overhaul with FULL Beisan system, and stuck at pulling the vanos unit off of the engine.
I have fully retard both camshafts (timing holes are perpendicular to the engine block), and still no luck to pry off the unit.
From various DIY thread and video, there's nothing I have missed.

Is the vanos unit usually hard to remove?

Please let me know if there's any hidden tips.

also, typical 24mm open wrench does not fit on the camshaft hex.
I have been sourcing the wrench, but no success, so I have used adjustable wrench. Still, I am trying to find the right tool for it.

For me, it seems 24mm wrench is a bit loose side of fitment on the hex. is 15/16" wrench fit better? since imperial one is a little smaller.

Any helps, recommendation and comments are welcome.

Peace!


Sent from my SM-G950U using Tapatalk
__________________
'85 528e 164k miles (sold)
'05 M3 6MT coupe

All DIY: 330 ZHP steering rack, diffsonline 4.1 diff with rem polish, E60 short shifter lever, AKG black diff bushings/subframe bushings, Rogue rtab, WPC rod bearings, Beyer driveshaft, full SS (SS stepped V1, catted S1, resonated S2, SS sport), Sachs clutch/flywheel, rear main, VANOS bullet proofing with anti-rattle, valve adjustment, cooling refresh, Ohlins R&T/Swift 448f 672r/GC street tops and camber plates, AFD E85 Proflex kit.
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Old Tue, Jun-12-2018, 04:54:35 AM   #5
aznniche
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Default Re: VANOS removal tip

Use 1/4 inch extension and stick the square end inside the vanos bolt
bolt open up top and tap it lightly towards the front of the car with a hammer.
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Old Tue, Jun-12-2018, 08:57:52 AM   #6
schoonerm3
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Default Re: VANOS removal tip

This is how I did it and it meant not damaging, denting or removing any head material.

I got two very thin putty knives like beisan suggest. I got a rubber mallet. I removed the solenoid block and solenoid pack. I used the rubber mallet to hit the vanos unit from the top and also from the bottom ( just enough space to get a swing). The vibrations eventually allowed me get the putty knives in a few mm. I keep hitting the unit with the rubber mallet and every so often I can work the putty knives in a little more. Only when I got the knives in by a good amount would I give it a little leverage and continue to bang the unit with the rubber mallet.
.install long screws at both corners to catch the vanos as it releases.

I really hated how there was material being removed or other signs of damage to the surrounding metal by forcing in screw drivers or even forcing in the putty knives.

My unit was very firmly attached
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Old Tue, Jun-12-2018, 03:16:38 PM   #7
Kleedzine
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Default Re: VANOS removal tip

Thank you for the advice.

Does it help, if I remove the two piston cap?

I really don't want to make any damages. So I am trying to be very careful.
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2009 Subaru WRX - SOLD
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Old Tue, Jun-12-2018, 03:36:50 PM   #8
schoonerm3
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Default Re: VANOS removal tip

Quote:
Originally Posted by Kleedzine View Post
Thank you for the advice.

Does it help, if I remove the two piston cap?

I really don't want to make any damages. So I am trying to be very careful.
wont make any difference.

The reason its tight is because of the two dowels that are tightly fitted on the two upper corner bolt holes.

Trust me, rubber mallet and use the vibrations to make a little separation and then work in the putty knives

Last edited by schoonerm3; Tue, Jun-12-2018 at 05:02:17 PM.
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Old Tue, Jun-12-2018, 03:53:24 PM   #9
Kleedzine
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Default Re: VANOS removal tip

Quote:
Originally Posted by schoonerm3 View Post
wont make any difference.

The reason its tight is because of the dowel that are tightly fitted on the two upper corner bolt holes.

Trust me, rubber mallet and use the vibrations to break the seal and then work in the putty knives

I see, I will try your method. Thanks alot for your help!
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Old Tue, Jun-12-2018, 05:20:15 PM   #10
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Default Re: VANOS removal tip

Is this one of this videos that you have watched? It shows some careful rubber mallet tapping action as others have mentioned.
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Discussing VANOS removal tip 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)