Honda will have its current Formula 1 engine available as a back-up plan if there are problems with its 2018 specification. Honda completed a major revamp of its engine design over the 2016-17 winter, but a problem with the oil system put it on the back foot at the start of the season, faced with a slog to recover. The Japanese manufacturer is sticking with the concept and evolving it for 2018 for its switch from McLaren to Toro Rosso, which means it has the option to stick with its current spec for the opening races if it cannot prove reliability of the new version in testing. "It's a great help [to stick with the same concept]," Honda's outgoing F1 project leader Yusuke Hasegawa...
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