The Lancia HF Integrale incorporated some of the features of the Delta HF 4WD into a road car. The engine was an 8-valve 2 L fuel injected 4-cylinder, with balancing shafts. The HF version featured new valves, valve seats and water pump, larger water and oil radiators, more powerful cooling fan and bigger air cleaner. A larger capacity Garrett T3 turbocharger with improved air flow and bigger inter-cooler, revised settings for the electronic injection/ignition control unit and a knock sensor, boost power output to 185bhp (DIN) (136kW) at 5300rpm and maximum torque of 31m·kgf (304N·m, 224lbf·ft) at 3500rpm.
The HF Integrale had permanent 4-wheel drive, a front transversely mounted engine and five-speed gearbox. An epicyclic centre differential normally splits the torque 56 per cent to the front axle, 44 per cent to the rear. A Ferguson viscous coupling balanced the torque split between front and rear axles depending on road conditions and tyre grip. The Torsen rear differential further divides the torque delivered to each rear wheel according to grip available. A shorter final drive ratio (3.111 instead of 2.944 on the HF 4WD) matched the larger 6.5x15 wheels to give 24mph/1000rpm (39km/h per 1000rpm) in fifth gear.
Braking and suspension were uprated to 284mm (11.2in) ventilated front discs, a larger brake master cylinder and servo, as well as revised front springs, dampers, and front struts.
1993 Lancia Delta HF Integrale at the 2006 Goodwood Festival of Speed.The HF Integrale was facelifted with bulged wheel arches for the wider section 195/55 VR tyres on 15-inch 6J alloy wheels. A new bonnet incorporated air louvres while the restyled bumpers wrapped around to meet the wheel arches at front and rear. The front bumper, now wider, incorporates air intakes and for the rectangular auxiliary driving lights. The side skirts are faired into the wheel arches at front and rear and the twin rear view mirrors are finished in body colour. There were only 50 RHD factory built cars, none of which were officially imported to the UK.
Integrale 16v A Lancia Delta Integrale HF 16V driven at the 2018 Rally Moritz Costa BravaThe 16v Integrale was developed for rallying, introduced at the 1989 Geneva Motor Show,[27] and made a winning debut on the 1989 San Remo Rally.
It featured a raised centre of the bonnet to accommodate the new 16 valve engine, as well as wider wheels and tyres and new identity badges front and rear. The torque split was changed to 47% front and 53% rear.
The turbocharged 2-litre Lancia 16v engine produced 200bhp (149kW) at 5,500rpm, for a maximum speed of 137mph (220km/h) and 0?100km/h (0-62mph) in 5.7seconds. Changes included larger injectors, a more responsive Garrett T3 turbocharger, a more efficient intercooler, and the ability to run on unleaded fuel without modification.