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F1 Malaysian GP: Mercedes reveals cause of Hamilton engine failure

Mercedes reveals the cause of Lewis Hamilton's engine failure during the Malaysian GP and will introduce 'revised running parameters' in Japan.
Mercedes has revealed a 'big-end bearing failure' was to blame for Lewis Hamilton's dramatic exit from the Malaysian Grand Prix following an engine blow.

The defending champion was leading comfortably in Sepang when his ICE expired at the start of lap 61 having completed a relatively meagre 618km since it was first installed.

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Following thorough investigations, Mercedes has revealed a 'big-end bearing failure' caused the engine to blow, preceded by a loss of oil pressure at Turn 15 (the final corner) only seconds earlier. Prior to this Mercedes says it had no warning the engine was about to let go.

As a result, Mercedes will introduce safeguards this weekend as it continues to understand what led to the failure, with 'revised running parameters' introduced for all Mercedes engine customers this weekend.

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Though Mercedes does not go into detail about this, it says it is a 'reactive follow-up to further questions to include but not limited to a different, more conservative oil specification.

In addition, planned new engines for five customer drivers this weekend have been delayed to aid the learning process and will continue to use their power units from Malaysia.

Hamilton – who comes into the this weekend chasing a 23 point deficit to Nico Rosberg – will revert to his engine from the Singapore Grand Prix and Rosberg will stick to his Malaysian GP power unit.

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HRC

October 06, 2016 12:44 PM

Richard, on the contrary you need to read it again! Mercedes clearly blame a big end bearing for the unit blowing, preceded by a drop in oil pressure. As i said, the low oil pressure was probably an effect of the bearing collapsing, not the other way around. If you knew anything about engineering you would agree.

HRC

October 06, 2016 11:28 AM

If a big end bearing failed it would certainly cause the loss of oil pressure as stated. Given the minute tolerances within these power units, a collapsing big end bearing could also definitely facilitate piston to valve contact with no seizure of the crankshaft, hence the flames and smoke This would happen in an extremely short period of time with little to no warning until it was too late.



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