Replaced timing components; the engine fails to start.

[dandareeggnog]

2010 Rolls-Royce with a 5.0-liter supercharged engine

Acquired this from an internet auction site around one month ago. It operated, although it functioned erratically and had timing chain noise.

Acquired items
Timing chain assembly
Timing chain tensioners
Specialized lockout instruments
Harmonic balancer extraction tool
Slide hammer injector extraction tool
Water pump, thermostat, and housing unit.
Injector Seals Factory Service Manual

All timing covers were removed, revealing that the right side (driver) chain guide was fractured, causing the chain to dangle freely.
I mechanically rotated the crankshaft and saw that the driver's side exhaust camshaft was stationary due to excessive slack in the chain. I detached the chains, guides, and tensioners, then meticulously turned the crankshaft until I could completely secure the lock in the crankshaft position sensor aperture. Subsequently, the flywheel lock and both the left and right camshaft locks were added. Installed new timing components and verified that all markings were accurate. Eliminated all locks and turned the crankshaft two complete revolutions.
The lock tools were misaligned, necessitating a complete redo until proper alignment was achieved. Upon pressing the start button, I hear the starter spinning, but it fails to engage the engine. I detached the starter and tested it outside; it seemed to function properly. I reinstalled it, still the issue persists.
Is there an engine lockout mechanism that inhibits the starter from activating the engine if certain requirements are unmet?

Question #2: What is the rationale for having two distinct lockouts, one for the crank and another for the flywheel? One cannot rotate without the other rotating. Is this accurate?

Thank you for any advice.

[partexpat]

indicated the section where you:

EITHER:

Conducted a comprehensive examination of each cylinder using a high-quality endoscope.

OTHERWISE

Assumed the standard procedure, removed the cylinder heads, inspected for bent or fractured valves, and performed the necessary substantial repairs if any damage was identified.

New valves, guides, seals, and maybe pistons and rods, along with other minor components, may need honing or over-boring of any damaged cylinder bore liners.

Overhead valve engines classified as "interference" will incur damage when the valve train and crankshaft are not consistently synchronized.

Whether powered by combustion, a starting motor, or human exertion, "interference" precisely denotes its intended meaning. Even minimally bent valves fail to seal.

[partexpat]

Did the engagement solenoid and mechanism ("Bendix" patent) function off-engine? It seems to be a negation. Could anything have been damaged when the chain failure caused the motor to explode?

If you have not addressed "all of the above," the defective starter has likely benefited you by preventing more harm.

[partexpat]

Multiple instances in "electronic logic". The shifter is neither in 'Park' nor 'Neutral,' which is the most apparent issue.

However, they inhibit all activation of the starting circuit, not only the 'engagement' solenoid.

In other words, it does not rotate, either.

[partexpat]

The "flywheel" pin inserted into the reluctor wheel in lieu of the Crankshaft Position Sensor is not the "lock". The component it connects to is too delicate to endure the strain of unfastening and refastening the crank nose pulley, even if the pin and its mounting could withstand such stress, which they should not be subjected to.

It is the accurate locator.

The serrated plate that substitutes the starter connects with the robust driving teeth designed for engine ignition.

That is the "lock."

It has considerable strength, however lacks precision.

Failure to orient the locator pin initially may result in improper clamping.

[dandareeggnog]

Thank you for providing such a comprehensive and insightful answer. At the outset of the conversation, I believed I could enumerate every element that contributed to the final outcome; nevertheless, individuals often get inundated with excessive inconsequential information. I am willing to provide the background for anybody interested. The automobile was acquired via an internet auction by a friend's girlfriend. She said that the winning offer was $1500; however, the agreement stipulates that the seller is responsible for transporting the car to the buyer. The cost amounted to $1500, resulting in a total expenditure of $3000, and she had yet to hear it operate. Upon arrival, the driver had the title but withheld it until she signed a document affirming that she would forgo any legal action against the auction business in the event of issues with the car. I was astonished that she had progressed this far, but she believed she would forfeit the $3000 she had invested, along with a further $1500 that the driver said would be charged for the return. This summarizes the chaotic situation succinctly. Upon removing the valve covers, plugs, and injectors, I tried to inspect the cylinders using a camera via the spark plug aperture; however, the orifice was too little to facilitate access. I examined the valves via the intake passageways and saw no apparent issues. I suggested that we observe the lifters via the cameras to identify any anomalies. We did not, and she was informed of the probability that the damage was more extensive than only the guides and tensioners. Given the expenses for the components, equipment, and the car, together with the few hundred dollars she had already provided, she was reluctant to remove the heads, as this would significantly elevate the costs. I believe it would not have incurred any further costs compared to the current expenses, other from the labor charges she will need to cover. I believe it is time to convey the unfortunate news to her.

[dandareeggnog]

The endoscope I used was a Harbor Freight model; however, the camera end was somewhat oversized for insertion.

[MelonCrush23]

The Teslong NTS500B has a probe designed for internal access. It is laborious to evaluate each cylinder in this manner, particularly given that all indications suggest the heads will inevitably need to be removed, and the mill may also need extraction for piston replacement, among other tasks.

Is it worth the cost of a Teslong or a comparable device to assist in making a choice for subsequent actions?

Acquiring a pre-owned but functional motor, maybe transferring the new chains to it, may represent the most economical solution.

An AJ133 may be rebuilt affordably. Even with whole new pistons, rings, bearings, etc., the finished AJ133 remains a "consumable design" intended for replacement rather than maintenance.

[jaybx]

Remove the valve covers and inspect the gaps. Bent valves will fail to completely retract.
Did you attempt to retract the tensioners/guides upon installation? It is not unusual for the new tensioner ratchet to break, resulting in immediate chain slippage. I have experienced it. (and distorted valves)
A leak down test might also be conducted; bent valves and similar issues would be evident in the results.
Are you certain that the motor is not rotating, only with the cams misaligned to the extent that little compression is occurring? Simple verification

[dandareeggnog]

I ensured the tensioners were operating correctly. I ought to have been more prudent than to anticipate the finest outcome. This is my first experience working on a Range Rover, and I must assert that it is not among the more straightforward cars I have encountered. I became well acquainted with the whole procedure of disassembling everything to access the timing components, reinstalling them, and repeating the process due to my unfamiliarity with this car. One lives and, ideally, acquires knowledge. Thank you for your contribution.