this Kit addresses the clearances inside the Vanos piston dramatically reducing Vanos rattle...
fitting the Vanos rattle kit should always be looked at when doing vanos seals as it takes little extra work to do when the vanos is already open
the install procedure for this engine needs you to set timing so it is beyond the scope of your average DIYer
Euro S50 Single Vanos Rattle
Another component that addresses the rattle is the diaphragm spring that’s incorporated in the intake sprocket. This spring loads the sprocket rotational movement to dampen the rattle quick movements.
Over time the diaphragm spring weakens and degrades in function. Replacing the diaphragm spring with a new one is often needed to fully resolve the rattle.
This diaphragm spring is not available as a separate part for the Euro S50 engines. But fortunately the same diaphragm spring is also used on the S54 and S62 engines and is available separately for these engines. On the S54 engine the part number is 11-36-7-830-684. On the S62 engine the part number is 11-36-7-833-218. But with the S62 engine BMW redesigned the diaphragm spring to thicken it. This part is more effective and lasts longer.
for more info on why Vanos rattle occurs see:
Vanos Rattle
fitting the Vanos rattle kit should always be looked at when doing vanos seals as it takes little extra work to do when the vanos is already open
the install procedure for this engine needs you to set timing so it is beyond the scope of your average DIYer
Euro S50 Single Vanos Rattle
Another component that addresses the rattle is the diaphragm spring that’s incorporated in the intake sprocket. This spring loads the sprocket rotational movement to dampen the rattle quick movements.
Over time the diaphragm spring weakens and degrades in function. Replacing the diaphragm spring with a new one is often needed to fully resolve the rattle.
This diaphragm spring is not available as a separate part for the Euro S50 engines. But fortunately the same diaphragm spring is also used on the S54 and S62 engines and is available separately for these engines. On the S54 engine the part number is 11-36-7-830-684. On the S62 engine the part number is 11-36-7-833-218. But with the S62 engine BMW redesigned the diaphragm spring to thicken it. This part is more effective and lasts longer.
for more info on why Vanos rattle occurs see:
Vanos Rattle
