Mazda RX-7 - EGR Port Block-Off Plate; Metering Pump Hole Cover; Weber Carburetor Float Bowl Extension

ENGINE
B.
EGR
port
block-off
plate.
1. lf
your
intermediate
housing
has
an
EGR
port,
it must be
blocked
off
with
a
plate.
We
recommend
aluminum
approximately
3.0
mm
thick.
2.
When
installing
the block-off
plate,
use a
gasket
or
some
sili'
cone sealant.
Metering
pump
hole cover.
1.
lf
the metering
PumP
shaft
is not
used as
a
mechanicaltachometer
drive,
the
hole
must be covered
with a
plate.
Make
the
Plate
of
aluminum
approximatelY
3.0
mm
thick.
2.
A
gasket
must be used
with the
hole
cover
plate.
D. Weber
carburetor
float bowl exten-
sion.
For courses
with
very
tight
or long
corners,
this
float bowl extension
will
help
prevent
fuel
starvation.
The
float bowl extension
fabrica-
tion
procedure
is
as
follows:
Cut
an appropriate
hole on the
side of the f
loat chamber.
Fabricate
the bowl extension
from sheet aluminum
as
shown
in the illustration.
Weld the bowl
extension
to
the
float chamber at
four
points
only;
if
you
weld all around
the
carburetor
may distort.
After
welding, seal the
bowl
extension to
the
float cham-
ber
with Three Loy.
The Three
Loy may be held
in
place
with
clay or something
similar until
it hardens.
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