Interesting little snippet from Federal Mogul that they have found that
re-melting cast alloy piston centres (DuraBowl technology) reduces the grain
size of the alloy and silicon particles resulting in a cost effective
stronger and more thermally resistant piston. The immediate future is for
diesel engines but - who knows?
Another snippet for those who care - the Merlin engine (Spitfire) was
removed, serviced and rebuild every 40 hrs under normal service and EVERY
time full throttle was used, no matter how long for. Full throttle use was
available for shortly over a 30 second burst and snapped a wire strung
across the throttle quadrant to show the ground crew it had been used.
Water injection was not used for decokes!!
Guy R Day
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