Readly RF Feb 20

ALL YOU NEED TO KNOW…
THROTTLE BODIES
GBS’s latest range of 45mm DCOE-style ATR
throttle bodies can be fitted to the 2.5 Duratec.
Manufactured from billet aluminium, with
precision-machined 6082 aluminium throttle
housings and linkage and flat machined stainlesssteel
throttle shafts to help reduce air turbulence.
There’s a dual wound throttle spring on each
DCOE housing, elliptical 120mm long bellmouth
trumpets with full return radii to improve airflow
and a one-piece billet fuel rail suitable for either
push-on hose fittings or AN hose fittings. The
throttle cable can be fitted to the left, right or in
the centre and can be operated in up or down
configurations. Kit prices start at £1,074. A billet
inlet manifold costs £195.
THROTTLE POSITION SENSOR
GBS’s ATR throttle bodies use a Wabash RPS
971-0002 throttle position sensor (TPS), which
will also fit most other manufacturers’ throttle
bodies that are fitted with a D-shaped shaft
including Weber Alpha, AT Power, Jenvey, Kinsler
and Pro-Jay. This is also a direct replacement for
the widely used Covlern CP17 TPS.
Priced at £54.97 from GBS, they explain that,
“The Wabash 971 rotary position sensor uses
high-performance conductive polymer tracks
and contact design to achieve a two percent
independent linearity. Reliable and versatile, it is
ideal for motorsport applications.”
This TPS can be used with a wide range of
ECUs, including Weber Alpha, Omex, DTA, MBE,
Emerald, Specialist Components, Haltec, Motec,
Life Racing and Pectel.
AIR FILTRATION
The ATR throttle bodies from GBS require
some form of air filtration. A pre-cut backplate
is available from them for £10.08, which can be
equipped with a 65mm or 90mm deep foam air
filter from Pipercross for £73.99.
INJECTOR AND ENGINE WIRING
HARNESS
Priced at £414, GBS’s stand alone engine
wiring harness for the Duratec includes plug
connectors for the injectors, TPS, coil packs,
crankshaft and camshaft position sensors, the
VVT (variable valve timing), air temperature, MAP
(manifold absolute pressure), coolant temperature
and oil pressure. This loom can be used with
the Emerald K3 and Life Racing F88 ECUs. It’s a
CANbus (controller area network) system, so it can
be linked to a digital dashboard to display data
from the sensors.
FUEL PRESSURE REGULATOR
GBS’s billet alloy fuel pressure regulator costs
£91.69 and provides 2.7, 3 or 3.5 bar of pressure.
Required if fitting their throttle bodies.
INJECTOR BLANKING PLUGS
The 2.5 Duratec features a direct injection
cylinder head (i.e. the injectors are fitted into the
cylinder head), so the holes for these standard
injectors need to be blanked off if an aftermarket
set of throttle bodies is being fitted instead. A set
of four blanking plugs with seals costs £32.64.
STARTER MOTOR
Whilst the standard starter motor can be fitted
to the 2.5 Duratec, Powerlite’s range of starter
motors are lightweight at 2.9/3.8kg and can be
fitted with a standard flywheel. Being an offset
gear-reduced starter motor, it promises to start
the engine faster, whilst drawing less current from
the battery (power rating is 1.4 kilowatts). Priced
at £166.20.
OIL FILTER
For a neater oil filter installation that’s easier
to access, GBS manufacture a new housing
that fits onto the side of the engine block with a
small amount of sealant. Ports are included to fit
the standard Duratec oil pressure light sensor,
along with connectors for oil pressure and oil
temperature sensors.
Machine manufactured from 6082 T6
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