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      12-30-2017, 12:57 AM   #48
mattfwalters
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Drives: 06 Z4MC (Sepang/Sepang/insane)
Join Date: May 2014
Location: Vancouver, BC

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MAJOR PROGRESS ALERT

The cams are in - hopefully for the last time:


Cams prepped for VANOS:


Cam gears:


Full timing system:


Timing cover / VANOS drive / timing chain:


VARIABLE

NOCKEN

WELLEN

STUERUNG


Front crank seal:


And then.. what's this? It is fully. Mechanically. Timed.


So I adjusted the valve clearance where required:


And put a fucking cap on it.


Things I Learned Today(tm):
  • Don't install the head before the big cam chain guide on the intake side. It's a complete fucking nightmare to install with the head in place.
  • Following the Beisan walk-through for VANOS rebuild makes mechanically timing this engine pretty straightforward. Start with #1/6 @ TDC; install the cams per FSM specs with #1's intake / exhaust lobes pointing at each other with a ~45* upward angle; install the cam gears per Beisan's instructions. Ta-dah.
  • Harmonic balancer bolts are one-time use.
  • Valve clearances did tighten up a bit after installing the head - mostly. A few went the other way.
  • Metric feeler gauges make S54 valve jobs a lot easier. Glad I got a set.

I have new harmonic balancer bolts coming along with an underdrive crank pulley. Why not, right? A/C is already deleted, after all. Planning to button up the sump tomorrow, and hopefully prep the front subframe for install. Maybe even get the flywheel / clutch installed!

Still need to sort out fuel line under the hood, but might be ready to get the engine back in the car next weekend... :woop:

Last edited by mattfwalters; 12-30-2017 at 12:41 PM..
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