Yamaha YZF-R1 Race Engine Tear Down: The Bottom End! (Part 3)

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Army Of Darkness won the 2020 WERA/N2 National Endurance Championship on a 2020 Yamaha YZF R1. They then went on to win the 2021 and 2022 championships as well.

Eventually the 2020 engine started jumping out of gear which is going to require a complete tear down to build a new engine for the 2023 season.

Mike Godin at KWS Motorsports offered to be the engine expert so follow along we see how the valves, seats, pistons, rings, bearings and clutch look after 4,000 miles at redline.

00:57 Clutch Plates
01:34 Metal tailings in oil pan
03:33 Worn transmission dogs! (the cause of our problems!)
05:06 Crossplane Crankshaft explained
08:45 Shiftshaft mechanism
10:57 Discussion of engine building philosophy with AOD slideshow
18:06 Chris Peris and Ben Walters lap Barber on AOD bikes


Part 3 takes a deep dive into the bottom end to examine the bearings, clutch, crankshaft, cylinders and transmission gears.

There is also some fun photos of the team and a nice lap of Barber Motorsports Park by Chris Peris and Ben Walters at the end of the video.

Please enjoy part 3 and subscribe to the channel!

in 2022 AOD was sponsored by: Army of Darkness, Pirelli, Yamaha Champions Riding School, Yamaha, Industry13, Chicken Hawk, Wood Craft, Hindle, Supersprox, Thermosman, N2, WERA, Roadracing World.