Exhaust cam timing after vanos job.

[Nicholas1996]

So I went through the vanos procedure. Crank the engine over 720 degrees and both cams line up perfectly with the cam bridge tool.(checked multiple
times) Than I start the car and pull the valve cover off and the exhaust cam doesn’t line up. intake cam lines up perfect though. Anyone else run into this ?

[Inizes]

By no means am I am expert in anything related to this. It’s my understanding that you fully retard the timing (rotate cams counter clockwise) prior to doing vanos. As soon as you start the car, the onboard computers begin changing timing again. This should rotate the cams clockwise, as you have pictured.

I believe your computer began adjusting timing after you started the car.

[mrgizmo04]

Once you start the car and shut it off, computer adjusts the cams into a position that is best for starting the car the next time - retarded on intake side and advanced on exhaust side.

That is why one of the first steps of the vanos job is to fully retard the exhaust cam - rotate it ccw if facing the engine from the front of the car (after which it will make the pin from the bridge drop in easily).

You have any error codes or car running rough?

[Nicholas1996]

Once you start the car and shut it off, computer adjusts the cams into a position that is best for starting the car the next time - retarded on intake side and advanced on exhaust side.

That is why one of the first steps of the vanos job is to fully retard the exhaust cam (after which it will make the pin from the bridge drop in easily).

You have any error codes or car running rough?

I run an aem infinity but there is no errors. And yes the cam was fully retarted. I think I freaked out because I popped the valve cover off and it wasn’t anywhere near the pin whole after running.

[Desert_M3]

That's normal. Unless your car idles/runs like crap, dont worry about it. When you shut the car off, the vanos adjusts the timing to make it optimal for start up, thats why they dont line up when you pop the valve cover off again.

[Nicholas1996]

That's normal. Unless your car idles/runs like crap, dont worry about it. When you shut the car off, the vanos adjusts the timing to make it optimal for start up, thats why they dont line up when you pop the valve cover off again.

Awesome thank you

[mrgizmo04]

Send it!