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The Lancia Triflux engine is Beautifully Engineered
The Lancia ECV car originally produced over 600 horsepower (448 kW) from a 1759 cc twin-turbocharged engine. This engine, christened Triflux, was built in an unusual fashion; the valves were crossed (for each side of the cylinder there was an intake and an exhaust valve), so that the two turbochargers could be fed with two separate manifolds. A single manifold carried the intake air (hence the name, from the three separate air ducts).
The twin KKK turbochargers can be linked in a modular turbocharging unit, with a single turbo being used at low revs to build up power and then, when the revolutions are right, the second turbo comes into play to take the power even higher. With such a unit, high torque is produced at low revs with no loss of maximum power and greatly reduced turbo lag.
The system produces improved heat distribution in the cylinder head to even out the expansions that take place on a turbo unit, also helping to improve engine cooling. It is now possible to link a single central wastegate valve to the two exhaust manifolds and, if the latest variable geometry turbochargers are utilised, the wastegate can be eliminated altogether.
The air that leaves the turbochargers is injected into the radiators or intercoolers before being passed on to the induction manifold and thence back into the cycle, while the compactness of the engine allowed the engineers much more freedom to plan the exhaust system to eliminate resonance problems encountered in more crowded systems.
- Centrally mounted, longitudinal with 4 cyl inline.
- 1795CC. Bore x stroke, 88.5mm x 71.5mm
- Triflux’ double reverse flow cylinder head with 4 valves/cylinder and twin overhead camshafts.
- Compression ratio, 7.5:1
- 600bhp @ 8000rpm
- Twin KKK (K26 type) turbochargers with individual intercoolers.
- Weber/Magnetti Marelli injection/ignition with electronically controlled turbocharging level.
- Dry sump lubrication with pressure and extraction pumps and air/oil radiators.
My down-to-earth list of 10 cars I would like to own in my lifetime (in no particular order):
Porsche 911, ‘78-‘98
Lancia Delta Integrale
Renault 5 Turbo
SAAB 900 SPG
Austin Mini Cooper S
BMW M3, E30
Porsche Cayman R
My batshit-crazy list of 10 cars I’d like to own if I won the lottery, robbed a bank, got lucky in the stock market, or found a rich sugar momma:
Porsche 935 (I need a race car)
Porsche 911 GT3 RS
Alfa Romeo 8C Competizione
Alfa Romeo 33 Stradale
What cars does your list have?