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General E46 Forum
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Old 01-22-2009, 08:28 AM   #1
mintimperial
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Red face VANOS...What the hell is it? (and do I have one)??

Hi Guys, I know youre all gonna be groaning at this one....so I apologise in advance.

Ive searched the forums here and found people talking about their VANOS, but no one really explains what it is and what it does!!!

Do i have one in mine? (1999 318i SE)

1st Bimmer so i'm totally perplexed as to what this thing does, how to know its in need of a seal or repair etc and what improvements will be gained from a little clean and refurb

Could someone enlighten me?

Thanks
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Old 01-22-2009, 08:33 AM   #2
Autobot325i
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http://www.usautoparts.net/bmw/technology/vanos.htm

and from the people who made our cars
http://www.bmw.com/com/en/insights/t...ble_vanos.html
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Old 01-22-2009, 08:43 AM   #3
mintimperial
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Thanks for that....kinda made some sense!

How do i know If it could do with new seals? What does the car do?
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Old 01-22-2009, 09:06 AM   #4
Autobot325i
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tons of info on this...do a search on vanos

/kill
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Old 01-22-2009, 09:43 AM   #5
mintimperial
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I agree that there is a ton of info. if you do a search as I stated i had. there is not however a laymans guide to what the hell the vanos does when its broken and how to know if it needs repair!!!
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Old 01-22-2009, 09:48 AM   #6
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Guess I'll add to it while I'm in here, do all 3's after 1997 come with double vanos or is this just the m?
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Old 01-22-2009, 09:56 AM   #7
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make with the clickin' for an explanation of the causes and symptoms of failed VANOS seals.
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Old 01-22-2009, 02:43 PM   #8
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OK, finding this difficult, my engine is a M43B19. Vanos or no Vanos?
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Old 01-22-2009, 04:43 PM   #9
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Vanos is a hydraulic actuator. It's part of the engine variable valve timing system. It's a metal component that mounts on the front of the engine head and connects to the camshafts and camshaft sprockets. Its job is to physically change the relative rotational position of the camshafts to the crankshaft.

Your 318i 4 cylinder engine does not have a vanos. The standard i6 double vanos is on all the E46 6 cylinder (non-diesel, non-M3) cars (323, 325, 328, 330). All of the double vanos units have failed seals and replacing them will provide significant performance improvements and improved fuel consumption.

Hope this helps.
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Old 01-22-2009, 05:50 PM   #10
mintimperial
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Originally Posted by Rajaie View Post
Vanos is a hydraulic actuator. It's part of the engine variable valve timing system. It's a metal component that mounts on the front of the engine head and connects to the camshafts and camshaft sprockets. Its job is to physically change the relative rotational position of the camshafts to the crankshaft.

Your 318i 4 cylinder engine does not have a vanos. The standard i6 double vanos is on all the E46 6 cylinder (non-diesel, non-M3) cars (323, 325, 328, 330). All of the double vanos units have failed seals and replacing them will provide significant performance improvements and improved fuel consumption.

Hope this helps.
Thanks that reall helps. Guess I should stop worrying about it as I dont have one lol
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Old 06-13-2010, 01:31 PM   #11
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Quote:
Originally Posted by Rajaie View Post
Vanos is a hydraulic actuator. It's part of the engine variable valve timing system. It's a metal component that mounts on the front of the engine head and connects to the camshafts and camshaft sprockets. Its job is to physically change the relative rotational position of the camshafts to the crankshaft.

Your 318i 4 cylinder engine does not have a vanos. The standard i6 double vanos is on all the E46 6 cylinder (non-diesel, non-M3) cars (323, 325, 328, 330). All of the double vanos units have failed seals and replacing them will provide significant performance improvements and improved fuel consumption.

Hope this helps.
VANOS on: 318i (facelift 1995 cm3 143HP) 320i 323i 325i 328i 330i
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Old 06-13-2010, 01:46 PM   #12
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Originally Posted by Rajaie View Post

Your 318i 4 cylinder engine does not have a vanos. The standard i6 double vanos is on all the E46 6 cylinder (non-diesel, non-M3) cars (323, 325, 328, 330). All of the double vanos units have failed seals and replacing them will provide significant performance improvements and improved fuel consumption.

Hope this helps.
When my mechanic replaced my VANOS (330ci, manual, 2001) it significantly increased power and acceleration at all speeds. I am so glad they found it and replaced it.

OP, wait until they start talking about Guibo's.
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Old 06-13-2010, 02:37 PM   #13
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Quote:
Originally Posted by Rajaie View Post
Your 318i 4 cylinder engine does not have a vanos. The standard i6 double vanos is on all the E46 6 cylinder (non-diesel, non-M3) cars (323, 325, 328, 330). All of the double vanos units have failed seals and replacing them will provide significant performance improvements and improved fuel consumption.

Hope this helps.
This is wrong. The N42 (1,995cc 143HP) motor has a Vanos...

The link posted by autobot even shows the N42 motor as an example...

http://www.bmw.com/com/en/insights/t...ble_vanos.html
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Old 06-13-2010, 03:43 PM   #14
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vanos is basically like v-tec if you know what that is, or vvt
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Old 12-09-2011, 11:05 PM   #15
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Originally Posted by TallTravel View Post
When my mechanic replaced my VANOS (330ci, manual, 2001) it significantly increased power and acceleration at all speeds. I am so glad they found it and replaced it.

OP, wait until they start talking about Guibo's.
What did your mechanic charge/what would it cost me to get a new one/rebuild mine in a 2001 325Ci?
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Old 12-10-2011, 12:13 AM   #16
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You don't want a rebuilt one. You just want the seals. A rebuilt one will still come with the faulty seals
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Old 12-10-2011, 12:15 PM   #17
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Ok. How much would it cost to get the new seals on one? Or how hard of a DIY is it? I have some mechanical skills...
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Old 12-10-2011, 12:56 PM   #18
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Quote:
Originally Posted by 02gtstang View Post
vanos is basically like v-tec if you know what that is, or vvt
It is NOT like v-tec. V-tec not only changes cam timing, it employs a separate set of cam lobs to alter lift as well.

Vanos only alters cam timing.
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Last edited by Geo31; 12-10-2011 at 12:58 PM.
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Old 12-10-2011, 01:00 PM   #19
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OP, search Wiki....
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Old 12-10-2011, 02:27 PM   #20
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Is there a difference in the vanos between the m54 and s54? they look different on the outside.
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