First off this is in a 300zx but I know you 240 guys have more experience with RBs. Now this car was running and driving for over a year, so this isn't a wiring issue. Fresh rebuild, rb26 444cc injectors with resistor box wired in, rb26 power fc ecu, no start. I have spark at all 6 coils, and all 6 injectors click when the CAS is spun. I've pulled plugs and confirmed there is fuel on piston tops. I can crack the throttle and get a few pops but nothing close to starting. This makes me think the AAC valve isn't drawing in air (has 12v, clicks when being plugged in/out) but that can be resolved later.
Some of the last things I can think of:
Hydraulic lifters dry from fresh rebuild, no oil, compressing and not lifting valves enough to draw in air?
Timing difference between rb26 ecu and rb25. (26=20*btdc 25=15*btdc) would think timing slightly advanced/retarded would still start
Timing 180* out? All timing marks have been double and triple checked, used oem Nissan belt with the "cheater" lines. Counted teeth between crank/exhaust cam, and both cams. But possibly was at tdc on EXHAUST stroke?
Any help would be appreciated. Have a basic vid, I've since gotten a few "pops" as described above by cracking the throttle. But not close to starting.
https://youtu.be/d_6Isc5LAps