Part : G. View More Info. Part : ECS Part : Part : KT3. VANOS adjustment tool. Part : K. Expected Ship Date: Nov 16, Expected Ship Date: Dec 6, Part : LA Expected Ship Date: in 2 Business Days.
Select Vehicle. Clear Vehicle. Replacement 22 Performance 7. Narrow Results By Brand. Special Offers. On Sale 4 New 2. Narrow Results Purpose. Vanos is an abbreviation of the German word for the variable camshaft timing system. BMW designed Vanos to improve engine efficiency and performance. At lower engine speeds, the valves open later for smoother idle and better power delivery.
At higher engine speeds the valves open earlier for better torque and improved fuel economy. First introduced in , Vanos is an efficient system that unfortunately degrades and breaks down over time. This is so well known that a cottage aftermarket industry has developed to address the issue. Vanos problems include rubber seals that harden and leak, exhaust hub face tabs breaking off, camshaft bolts loosening and the solenoid pack failing.
Chapter and verse with pictures can be seen here. I enjoy a good DIY project but this one was above my pay grade. I enlisted the help of a well-respected M3Forum member, Dave F.
A fellow owner I know had him do his car last year and recommended his work highly. Another good sign was when I called Beisan to order the parts, and the owner Raj knew exactly who Dave was. A big one on the E46 M3 is valve adjustment. The S54 uses solid valve lifters that need to be checked manually every 30, miles. Back when the E46 M3 was designed, solid lifters allowed valves to be set more precisely, allowing for high RPMs and a bit more power. These were typical attributes of BMW M engines prior to the turbo age.
Today BMW uses its Valvetronic technology working in conjunction with Vanos and is totally self-adjusting. There are clearance ranges for the intake. Some specialized tools and knowledge are required.
According to service records I received when I bought the car in , the job had last been done 26, miles ago. Yet it turned out that 11 of the 24 valves needed adjustment.
Dave told me he almost always does the valves along with the Vanos. We also replaced the valve cover gasket, the timing chain tensioner, the fan clutch and the spark plugs. Typically, the adjuster unit , miles. The solenoids that drive the VANOS adjustment unit are the first to need replacement, usually by 60, miles. It's not uncommon for high mileage S54, especially if service was ignored or deferred, to need more than just the VANOS unit replaced.
Other wear items or weak areas include the bolts holding the sprocket to the camshaft, the hub on the exhaust camshaft that drives the VANOS oil pump, the aforementioned chain guides and valve adjustment, an VANOS oil lines. All of these parts are available separately. It comes with a one year warranty.
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