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The firing order has been changed from that shared by all previous Modular V8s (1-3-7-2-6-5-4-8) to that of the Ford Flathead V8 (1-5-4-8-6-3-7-2). [17] Compression ratio is 11.0:1, and despite having port fuel injection (as opposed to direct injection) the engine can still be run on 87 octane gasoline.
For twin-cam or DOHC engines, VCT was used on either the intake or exhaust camshaft. (Engines that have VCT on both camshafts are now designated as Ti-VCT.↓) The use of variable camshaft timing on the exhaust camshaft is for improved emissions, and vehicles with VCT on the exhaust camshaft do not require exhaust gas recirculation (EGR) as retarding the exhaust cam timing achieves the same ...
Turbocharged, direct gasoline-injected inline four-cylinder engine with twin independent variable-camshaft timing Displacement 1,596 cc (1.6 L; 97.4 cu in) Bore 79.0 mm (3.11 in) Stroke 81.4 mm (3.20 in) Compression ratio 10.0:1 Valve gear DOHC with four valves per cylinder, twin independent variable-cam timing Cylinder head Cast aluminium
Despite revisions that included a higher-lift camshaft and revised combustion chamber shape, [30] power and torque outputs for the carburetted 3.3 and 4.1 litre engines fell to 88 kW (118 hp) and 97.5 kW (130.7 hp), although maximum power output from the 4.1 EFI engine increased slightly to 121 kW (162 hp). [31]
The 6.2 L (379 cu in) V8 is the main variant of the Boss engine. The V8 shares design similarities with the Modular Engine family such as a deep-skirt block with cross-bolted main caps, crankshaft-driven gerotor oil pump, overhead cam valve train arrangement, and bellhousing bolt pattern.
The largest displacement version of the Essex V6 appeared in the 1997 model year as a replacement for the Ford 300 straight six in the F-150. This engine kept the 3.8 L's bore, but featured a stroke lengthened to 95 mm (3.74 in), bringing its displacement up to 4,195 cc (256.0 cu in).
The balance shaft runs off the small gear on the left (the large gear is for the camshaft, causing it to rotate at half the speed of the crankshaft). Balance shafts are often used in inline-four engines , to reduce the second-order vibration (a vertical force oscillating at twice the engine RPM ) that is inherent in the design of a typical ...
Some time prior to 1919 Lawrence Pomeroy, Vauxhall's Chief Designer, had designed a 4.4 L engine for a proposed replacement for the existing 30-98 model to be called the H-Type. [8] In this engine the single overhead camshaft was to move longitudinally to allow different camshaft lobes to be engaged.