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Improved 98

23rd October 1982
Page 10
Page 10, 23rd October 1982 — Improved 98
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FURTHER improvements to the Leyland 98-Series engines have been introduced to coincide with the launch of the latest additions to the Freighter range.

In addition to Freighter, the modified engines will be fitted simultaneously to Terrier, Boxer run-out models and to appropriate export vehicles.

The introduction of a helical inlet port has allowed Leyland to dispense with the need for a masked inlet valve.

The next design means that valve rotation can be permitted, which Leyland claims will improve local thermal conditions and extend valve and seat life.

A controlled-expansion threering piston has been introduced in conjunction with a plateauhoned bore to improve oil consumption and extend cylinder life.

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