Dumb Question Thread - No Flaming Allowed

[Slideways]

Can someone link me to a page or video that shows exactly how the S54 VANOS works? I'm trying to understand why the exhaust hub has tabs but the intake side doesn't.

The exhaust cam and hub tabs drive the oil pump disc in the VANOS unit to generate the oil pressure required to advance and retard the cams.

Skip to VANOS section: https://bmwtechinfo.bmwgroup.com/tec...%20Vehicle.pdf

https://nam3forum.com/forums/forum/main-forum/e46-2001-2006/3317-s54-vanos-info-thread

[newton22]

Can someone link me to a page or video that shows exactly how the S54 VANOS works? I'm trying to understand why the exhaust hub has tabs but the intake side doesn't.

[Cubieman]

Smoke testing for vacuum leak. Is there a decent low cost tool/DIY setup for this?

I made one from a pickle jar/soldering iron/sock/baby oil and bike pump later replaced by a airbrush pump I already had. It worked pretty well actually. There is a YouTube on it.

[maupineda]

Amazon, I got one for like 90 bucks last year.

[Nate047]

Smoke testing for vacuum leak. Is there a decent low cost tool/DIY setup for this?