Jaguar AJ-V8 Timing Chain Tensioners: 10 Critical Facts You Need to Know! XK8 X100 Modurol EP0B.

The AJ-V8 is the heart of the Jaguar XK8 and XKR, but for early models (pre-2002), the timing gear is a known weak point. Because the AJ-V8 is an interference engine, a failed tensioner isn't just a rattle—it can be a terminal event for your engine. In this technical guide, we break down multiple videos of experience into 10 essential facts to help you identify, inspect, and fix your timing gear before it's too late. What we cover: The "Interference" Risk: Why pistons and valves must never meet. Tensioner Generations: Identifying Rev 1, 2, and the "Must-Have" Rev 3 Metal Tensioners. The Engine Number Code: How to decode your engine’s birth date down to the minute. Failure Modes: Lack of oil pressure at startup vs. the dreaded plastic "break-up." DIY Inspection: Why you can't use a borescope and must remove the cam covers. Specialist Tools: Using crankshaft pulleys and cam-locking bars correctly. The Torque Trick: How to achieve the massive 364 Nm crankshaft torque without a specialised wrench. We are working and learning together to keep these hallowed lines on the road. If you're unsure about your tensioners, don't wait for the rattle—check your engine number today. Please 'like' if you like the video by pressing the thumbs up, this is much appreciated. This channel is dedicated to all things Jaguar XK8, from maintenance and DIY guides to in-depth reviews and restoration projects. Join me as we explore the beauty and intricacies of this iconic British sports car. Always consult your vehicle's service manual and follow safety precautions when working on your car. This video is for informational purposes only. You can also find us on:- YouTube -    / @modurol   Facebook - https://www.facebook.com/share/1DKkER... Instagram -   / modurol_   Website - https://www.modurol.co.uk or email us at - [email protected]