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Ferrari


 

 

  


F355

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PICTURES
Most common pictures of F355

ENGINE
Some information about the engine of F355

TECHNICAL
Some techical info of the F355


For the F355, Ferrari developed a new 90 V8 213.3 cu. in. engine with an 3.35 x 3.03 in bore and stroke. This power unit develops 375 bhp at 8250 rpm and revs up to 8500 rpm. Its maximum torque is 268 Lb. ft. at 6000 rpm. At 109 bhp/litre, this engine develops the highest specific power unit.

Timing is by four overhead cams with tapered lateral intake cams valves designed especially for Ferrari and 5 valves per cylinder (3 radial intake, 2 exhaust). In order to reduce exhaust emissions and maintenance flexibility, hydraulic tappets with automatic play take-up appear for the first time on engines with revs above 8000 rpm. In addition. the variable rigidity valve double springs raise the resonance potential state to over 10,000 rpm.

The pistons are made of a forged aluminum alloy with a distinctly lower than average apparent density (K = 0.44) and are coupled with Nikasil-coated "wet" steel liners. These are wet-sunk into the aluminum engine block. For optimum engine efficiency at high speeds the F355 adopts Ti6al4V titanium alloy, finite element designed conrods previously only seen on Formula 1 engines.

The F355 also features Bosch Motronic M2.7 electronic injection-static ignition management. The dry sump engine oil circuit incorporates twin scavenge and one pressure pump plus a thermostatic control valve.

The outstanding performance of the new engine can be synthesized by the 109 bhp/litre achieved with a displacement of 213.3 cu. in.. The parameters by which engine quality is assessed attain the very highest standards. The brake mean effective pressure (BMEP) which represents thermal stress, is equal to 1.5 kg/em2. The mean piston speed (Cm), which indicates mechanical stress, is equal to 21.8 m/sec. Weight, reliability and easy maintenance are the outstanding characteristics of this engine, which develops 375 bhp at 8500 rpm.

 

 

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