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[Healeys] Piston design

To: <healeys@autox.team.net>
Subject: [Healeys] Piston design
From: "Guy R Day" <grday@btinternet.com>
Date: Mon, 25 Jan 2010 14:09:35 -0000
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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