Kawasaki fixes 2011 Ninja ZX-10R, sales to start in January

Article by Christian A., on January 2, 2011

When Kawasaki Heavy Industries suspended the public launch of the 2011 Ninja ZX-10R because of a technical issue, it left many people wondering what went wrong. But recently, Kawasaki has disclosed what initiated the investigation and what it has done to resolve the problem.

When testing some units of the 2011 Ninja ZX-10R, Kawasaki found out that the intake valve springs could surge when they were operated at high rpm under unique riding conditions such as on a racetrack.

The company said that this is a remote possibility but when it does, it could lead to one or more intake valves failing to seat properly, resulting in poor engine performance.

After the Kawasaki factory engineers studied the units that had this defect, they designed and fully tested a countermeasure that fixes the issue without sacrificing any aspect of the new engine’s performance.

Kawasaki replaced the camshaft, valve springs and spring retainers for intake valves on the few units built so far in order to prevent the valve spring from surging. In addition, the changes to the design are already being incorporated in its production.

While making the announcement, Sales and Marketing Manager for Kawasaki Motors UK, Michael Johnstone took the opportunity to congratulate the KHI engineers for their work. The highly anticipated 2011 Ninja ZX-10R, which is considered to be the strongest Ninja ever, will go on sale late in January.

Topics: kawasaki

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