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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 04-10-2005, 01:05 AM   #1 (permalink)
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i'll post it in this forum coz its the only 1 i use nowdays...


does any1 here knw the difference, i always thought it was similar!? but yeah if some1 could explain it'd b great!

nd is vanos nd double vanos the same thing or...



thnx...
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Old 04-10-2005, 02:45 AM   #2 (permalink)
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Quote:
Originally posted by WarNox@Apr 9 2005, 10:05 PM
i'll post it in this forum coz its the only 1 i use nowdays...


does any1 here knw the difference, i always thought it was similar!? but yeah if some1 could explain it'd b great!

nd is vanos nd double vanos the same thing or...



thnx...
[snapback]329315[/snapback]
there is single vanos and double vanos 2 diff types
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Old 04-10-2005, 05:15 AM   #3 (permalink)
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VANOS and double VANOS are basically the same thing only applied to one or two camshafts.

In vanos engines the intake camshaft is twistable to provide variavle valvetiming.
In double vanos engines both intake and exhaust camshafts are twistable.

vtec is different, the cams in vtec engines have double sets of camlobes. At a certain rpm and when certain criterias are met it switches over.

This means the that both valvetiming and valve lift is variable (between two fixed values). In reality it is like haveing an econo cam when you are not going flat out, and when you open up you have a hotter cam.


BMW's valvetronic engines have variable valve lift.
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