Engine Rebuild // Part 8 - Tappets & Rocker Shaft // Land Rover 2.25

Installing the tappet slides and rocker shaft for a Land Rover 2.25 engine. Main Channel - YouTube - Geoffrey Croker    / geoffreycroker   Workshop Charts - https://www.geoffreycroker.com/   / geoffreycroker     / geoffreycroker   flickgeoffanemail@gmail.com In this episode of the Land Rover engine rebuild series, we dive deep into tappet slides, cam followers, rocker shafts, and rocker arm restoration on a classic Land Rover engine. The video covers inspection, diagnosis, machining, and reassembly techniques, including how to identify worn rocker components, damaged tappet rollers, and common failures caused by poor-quality aftermarket parts. Detailed explanations show how the valvetrain operates, how oil passages work inside the rocker assembly, and why maintaining correct component orientation is critical during assembly. The rebuild process includes replacing corroded tappet rollers, inspecting original tappet slides, machining worn rocker arms, polishing valve pads, fitting and reaming new rocker bushings, and rebuilding the complete rocker shaft assembly. There’s also an in-depth discussion about differences between early and late-style Land Rover rocker arms, oil feed design changes, and why some supposedly interchangeable parts can actually create lubrication problems. Practical workshop techniques are demonstrated throughout, including custom tooling, lathe work, precision fitting, and clearance setup using basic home workshop equipment. 00:00 Oil Pump Gear Marking Correction 00:22 Tappet Slides & Rollers Explained 01:10 Aftermarket Roller Failure Warning 01:42 Inspecting Tappet Slide Wear 02:22 Ultrasonic Cleaner Mistake 02:51 Replacement Tappet Slides 03:01 Retaining Screws & Sealing Washers 03:36 Installing Tappet Slides & Rollers 04:44 Rocker Shaft Wear Inspection 06:41 Early vs Late Rocker Differences 08:15 Stripping Rockers & Bearings 09:03 Machining Worn Rocker Faces 10:48 Polishing Valve Contact Pads 12:29 Fitting & Reaming New Bushings 15:55 Rocker Shaft Sizing & Fitment 17:07 Rocker Shaft Assembly Orientation 18:47 Final Rocker Assembly 22:04 Ready for Cylinder Head Installation