Couple of thoughts
- The video says that the JLR engine is a Ford engine.
- From several articles the JLR 5.0 AJ-V8 Gen III engine is not a Ford 5.0 Coyote
- IF the engines are the same we should be hearing about the of problem with Ford vehicles. I have not.
Chatting with a British lad I ran across on our Norton motorcycle restoration forum he mentioned working at the Ford manufacturing plant in "Jolly Old England."
All they do is manufacture parts to LR's engineer's specs no matter the design flaws or inferior quality of materials used and having no say but too only manufacturing the parts.
Backing up to the Ford's 5.0 Coyote engine mentioned above with their same design as LR's, both having over head cams with chain guides the Coyote engines are having zero chain guide problems or failures. Talking Coyote engines run over 100K miles being run hard past 8,000 rpm's on any given day. What's that telling anyone able to even think at all?
On another topic, "modern day oils" that's a very true statement after the EPA ****'s mandated zinc and phosphorus to be removed from oil as it "might or may shorten the life of the catalytic converter" hence its removal. Same with unleaded gas in older engines designed to run on leaded gas called valve recession damage accelerated.
Considering 99.9% of modern day engines run roller rockers or slippers against the cam verse the known highly stressed high pressure contact areas as used with flat tappet cam designed engines requiring that added protection zinc and phosphorus offered.
This also applied to highly stressed push rod race engines with flat tappet cams which will destroy themselves within seconds long before the cam break in process is completed.
Even the older LR engines of 2004 on back to 1987 Discoveries already having a known problem of cams wearing out with the matching lifters just as bad by only 60K miles.
All the above years required to run a cat converter starting in 1974 app in the U.S.A. hence the reduction of zinc and phosphorus until there was none as well the cam and lifter protection. Sure the engine can run on modern day oils with you not knowing your accelerating the death of the cam and lifters.
If running any older flat tappet cam and lifter engine (87 to 04 LR) and these zinc and phosphorus additives shortened the life of your cat converter you have more problems like a tired worn out high mileage oil burner.
Haven't seen a shortened and failed cat yet on any LR engines (older push rod w/ flat tappets) that are still running at over 200K miles recording the same exhaust specs at smog stations compared to a newly installed cat which has been "seasoned" a 100 miles before the smog test. I'm running 20+ years on aftermarket cats (Magnaflow's) and run a high concentration of zinc and phosphorus additives to our modern day oils without a bit of a problem with the so called shortened cat life damage. Cam lobes, lifter surfaces looking almost like new, double row true timing chain still without slack at 143K miles.
Had to spout off......~~=o&o>.....