The
modification form 5 inch to 8 inch outlet consisted of removing
the upper inner armoured plate and reposition the rear armoured
plate an inch or so further back. The ducting was removed altogether
and instead metal louvers were attached to the rear late and lower
inner plate. The upper louvres being held in place by 5 bolts
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To
the right is a top view of an 8 inch air outlet showing clearly
the louvres and some of their securing bolts
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As
this view from the engine compartment shows, there is very little
to restrict the flow of air to the outlet and this must have represented
a vast improvement over the ducted 5 inch outlet. |
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This
photograph shows how the rear plate has been moved backwards and
actually overlaps the end of the side plates.
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This
photo by Bob Grimster of Aberdeen Prooving Ground's MkIII shows
the rear view of an 8 inch outlet. Circled in red are the bolts
the secure the upper louvres. If you look closely you can also make
out the corresponding bolts for the lower louvers (just below the
rear plate). Circled in blue are the rivets that hold on the rear
plate. Note how they differ from the arrangement used on the 5 inch
outlet.
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Indeed
there does seem to be some variation on the number of rivets used
on the rear plate. This MkII ARV has five compared to the three
used above
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