 The
rear end is dominated by the tunnel exits and the striking nature of
the
ultra low rear deck. Considering how the cooling airflow
is routed through the car, effectively nothing exits out of the engine
bay, the engine cover has been lowered as much as
possible at its trailing edge and is mere millimeters above the
trailing edge of the underfloor. Ultimately, though, Burvill
admits,
"I am sure this area of the car was not as optimal as the nose and
areas
further forward." |
 The
engine exhausts exit just at the trailing edge of the underfloor. |
 The reasoning for exiting the engine exhaust into the underfloor was
driven primarily by packaging. With the ultra low engine deck
height and the trailing edge of the underfloor a mere 10 mm or so lower
than the engine cover, there was no room to shoot it out the rear of
the car. So the only option was to plumb the exhaust into the
underfloor. Naturally there was a aero benefit, but as John Iley
mentioned,"As a rule I am not a supporter
of such a system as it makes the car’s performance
too throttle dependant, which does not provide the basis for a stable platform.
However the location on the J2X Allard was far enough rearward that its
effect was greatly reduced." |
