S54 Vanos post Beisan/DV Rebuild Timing Issue

[BL92]

Finally got DIS working, thanks for waiting

[sapote]

It’s perfect.

[chris719]

Finished my Z4M last week.









Everything was spot on (didn't post the other checks but they were basically perfect) except the intake cam had an asymmetrical advance/retard time. Valve body or solenoid pack? Still ok I guess and drives well. Kept original pump disc and replaced hub with VAC hub. Replaced VANOS accumulator and pressure regulator.

[maupineda]

Mine had the same values with a BN unit, looks good!

[chris719]

Mine had the same values with a BN unit, looks good!

It was a real pain in the ass on Z4M with that cross-member there. I even used the air tool and it still sucked and I was unsure if the pistons were bottomed out.

It drives well and I won't chase that 293 ms intake advance but I do wonder what causes that.

[maupineda]

If you run it again with oil a bit cooler it improves, but is not an issue. Tolerance is 500ms so is all good.