[Healeys] Piston design

[rrengineer @dslextreme.com]

Wow! Is that what present day owners have to do?  It would make owning a
Spitfire or Mustang (same engine) VERY expensive.  As if just buying one was
not expensive enough!
Mike MacLean
60 Sprite
56 BN2

On Mon, Jan 25, 2010 at 6:09 AM, Guy R Day <grday at btinternet.com> wrote:

> 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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