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AJ133SC tear down

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Old Jan 7, 2023 | 10:44 PM
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Default AJ133SC tear down

Full AJ133SC tear down YouTube vid by I Do Cars just out:
Gives a decent overview of the AJ133SC.
Apparently out of a Jag not a Range Rover.
Appears to me to be a 2011 judging by the casting on the inside of the lower oil pan.
Not much damage and he's not sure why it was a returned core but he suspects it's because the timing was out, main clue was a fairly loose timing chain.
One big anomaly I spotted which he didn't (it was his first ever AJ133) - it had the older/original aluminium front cross over coolant pipes (upper and lower) which dates it to 2009 - 2012 but it had the later three link (8.0 mm pitch) timing chains rather than the early nine link (6.3 mm pitch) chains it should have had, which tells me (together with some other clues) that the timing chains had been replaced and updated. Maybe they were poorly fitted and/or mistimed and that explains why the chains were loose and hence the timing was off?
Also it seems likely the rod bearings had been replaced but not the main bearings?
 
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