Info
The Cosworth FBA and FBC V6 Engine "BOA"
The FBA and FBC engines were found in the Ford Granada and Ford Scorpio Ultima. The FBA came first in 1991 also known as the 'BOA', it was based on the Ford Cologne V6 used in the Ford Sierra and Ford Capri and other models and was a twin overhead camshaft 24valve conversion for more power, producing 195 metric horsepower (143 kW; 192 bhp) and better idle quality.
In 1995, with a new version of the Scorpio, it was upgraded with a wider torque spread and higher power - to 204 PS (150 kW; 201 hp), from a variable intake system and reprofiled cams. The NVH was improved with a change from a single chain to drive all four camshafts - to one chain to drive one bank of cams and a second for the other bank, this engine was known as the 'BOB'.
A racing version was also available for a short time - FBE - with individual throttle butterflies for each cylinder.
FBB and FBD engines did exist as development engines but these were never released.
The two production engines were always mated to an automatic gearbox but have become popular in the custom car scene where they have been mated to the 4x4 manual transmission and the rear-wheel-drive manual transmission from the Ford Sierra XR4 and XR4x4. There are also companies that offer twin and single turbo conversions, and other modifications to increase power to usually around 400 bhp (300 kW). These engines can be bought relatively cheaply and providing they are well serviced, engines have been known to cover over 200,000 miles without major work being required
The Cosworth Engine in a ford Granada
Technical
-
Cosworth FBA FBC BOA V6 Engine Tehnical details and specifications (1991-)
Ford Engine code: BOA 2.9L
No. of cylinders 6/DOHC
Capacity 2936 cc
Firing order 1-4-2-5-3-6
Compression ratio 9.7:1
Suitable for unleaded petrol Yes
Diagnostic socket Yes
Ignition coil Make Motorcraft
Fuel system pressure 2.75-3.0 bar
Injector 15-17 Ohm
Thermostat opens 79-83°C
Starter motor Make Bosch Type 0 001 108 084
Minimum starting voltage 10.0V
Maximum cranking amps 146-178A
Regulated voltage 13.7-14.6V© Motor car History
Service
-
Cosworth FBA FBC BOA V6 Engine Service Guide (1991-)
Ford Engine code: BOA 2.9LSpark plugs Electrode gap 0.7-1.0 mm
Spark plugs Original equipment Motorcraft AGPR22P
Spark plugs Make Autolite APP3922
Spark plugs Make Bosch FR6DP1X
Spark plugs Make Champion RC7YCC4
Spark plugs Make NGK PFR6B-11
Valve clearance -INLET Hydraulic
Valve clearance -EXHAUST Hydraulic
Drive belt size - alternator 12.5x900mm
Drive belt size - PAS/AC 12.5x1200 mm
Drive belt tension - alternator/PAS/AC 4mm
Engine oil grade - Normal/moderate climate 10W/30 SAE or 10W/40 Semi-synthetic
Engine oil grade - cold climate 5W/40SAE
Engine oil grade - hot climate 10W/40SAE
Engine oil change 5.0 litres
Tighten oil Sump drain bolt 25 Nm
Cooling system 8.5 litres
Brake fluid Type DOT 4
© Motor car History
Maintenance
Maintenance Advanced Data
Members Only ! >> Register here. <<
Models and years covered 1920 to 2020 all make and years. Car and Commercial vehicles Worldwide including basic to advanced.
Including Full Rebuilds, Service and trouble shooting, Technical diagrams and Wiring diagrams on request..
- ENGINES
- COOLING SYSTEM
- TRANSMISSION
- BRAKES
- STEERING
- SUSPENSION
- WHEEL ALIGNMENT
- DIMENSIONS AND SIZES
- TORQUE WRENCH SETTINGS
- CAPACITIES
- CARBURETTORS
- INJECTION SYSTEMS
- SERIAL NUMBER LOCATIONS