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23-679: The original model was the Mazda Xedos 6 , which was similar in size and in engine to the BMW 3 Series . The Xedos 6 has two types of engines - 24 valve V6 @ 144 hp named KF and 16 valve L4 @ 107 hp named B6. In 1994, Xedos Mazda renewed the Xedos 6 model with changes in engine ecological standards and body exterior. The Xedos 6 was marketed as the Eunos 500 in Japan and Australia . This vehicle

46-455: A highly rigid aluminum split-crankcase engine block design with 4-bolt mains with additional bolts securing the lower block, an internally balanced forged steel crankshaft with lightweight powder forged carbon steel connecting rods . They were designed with the intent of being as compact as possible for short-hood front-wheel drive applications. One unique innovation of the K-series was

69-696: A modern automobile produced after 1975 is a stub . You can help Misplaced Pages by expanding it . Mazda Xedos 6 The Mazda Xedos 6 and Eunos 500 are compact executive cars that were produced between 1992 and 1999, with the Xedos 6 being sold in Europe by Mazda , and the Eunos 500 being sold in Japan and Australia by Eunos . The cars were not sold in North America, with the larger Xedos 9/Millenia model offered there instead. In total, 72,101 Xedos 6 and Eunos 500 automobiles were produced. The Eunos 500

92-478: A resonant chamber within the intake manifold. The valves actuate at particular engine frequencies (i.e. rpms) to produce optimal torque/horsepower output at any given engine speed. The valve operates to create three specific first-order resonant frequencies that increase cylinder air charge. All three resonances are used from 0 to 6250 rpm (6800 for the KL-ZE). Above that threshold, the first primary resonant chamber

115-468: A top speed of 205 km/h (127 mph). For 1994, a 1.8-litre straight-four was introduced as the new base model, with a power output of 115 PS (85 kW; 113 hp), whilst the 1.8-litre V6 was discontinued. In 1996, following Mazda's decision to axe the Eunos brand, the Eunos 500 was rebranded as the Mazda Eunos 500, and remained in production under that name until 1999. The Xedos 6

138-738: Is among the smallest production V6 engines ever; and also the first K-series engine to be used in a Mazda car (in the Mazda MX-3 ). It was a DOHC 4-valve design with VRIS and a bore and stroke of 75 mm × 69.6 mm (2.95 in × 2.74 in). It produced 130 hp (97 kW; 132 PS) in US trim (sometimes referred to as "K8-DE" ), and 135 hp (101 kW; 137 PS) in Japanese trim (the "K8-ZE" ) on introduction in 1991 and 144 hp (107 kW; 146 PS) and 115 lb⋅ft (156 N⋅m) at its best. The displacement

161-493: The 626. It featured solid lifters, a cast crankshaft to reduce rotating mass and a reworked intake system. The distributor was replaced with a Ford EDIS coil-pack ignition. Mazda introduced a key technology with these engines, known as the Variable Resonance Induction System (VRIS) . A series of two butterfly valves coupled with electronically controlled actuators varied the volume and length of

184-457: The European models. The 1.6-litre engine was not offered in Japan, with the base model instead being a 1.8-litre K8-ZE V6, producing 140 PS (103 kW; 138 hp) and having a top speed of 195 km/h (121 mph). The 2-litre V6 was offered in Japan, but in a higher state of tune; Japanese models produced 160 PS (118 kW; 158 hp) from their KF-ZE engines, and had

207-668: The Japan-only KL-ZE , which produced 200 hp (149 kW; 203 PS) and 165 lb⋅ft (224 N⋅m). Another variant, the KL-DE (also known as the KL-03 outside the US, and fitted to 2.5-litre Ford Probes ) was the worldwide version, with 164–174 bhp (122–130 kW; 166–176 PS) in various applications. In 1998 a revised version of the KL known as the KL-G4 was used in

230-482: The Xedos 6, destined for mainland Europe, were first produced in 1993. The car's exterior styling was often praised by reviewers, with Honest John stating that it "could have been the prototype for a new small Jaguar - with Mazda reliability," however, the interior was also criticized for being too dull. There were also plans to market the car under the Amati 300 name, but they did not come to fruition. The Xedos 6

253-399: The championship, two points behind former champion Tim Harvey in the works Renault 19 . Mazda were classified eighth, and last, in the manufacturer's championship. For 1994, Roger Dowson Engineering and Team Dynamics ran the works Mazdas, with David Leslie and Matt Neal being entered in a two-car team, but the season would prove to be less successful. Neal was forced to withdraw from

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276-453: The entire rpm range. VRIS is used on the K8, KF, and KL but nearly all modern Mazda V6s are now using this technology. The K-series all have a 7,000 rpm redline with 7500-7800 rpm limiter, which given the engine design is conservative. The KJ-ZEM Miller cycle engine had a 6,000 rpm redline, but was only available with an automatic transmission . The 1.8 L (1,845 cc) K8

299-693: The intake charge in the cylinder); and thereby increasing the net power output of the V6. It was used in the T-platform cars. The supercharger used is the twin-screw type with electronic boost control. Power output was 217 hp (162 kW; 220 PS) and 210 lb⋅ft (285 N⋅m). The KJ-ZEM was on the Ward's 10 Best Engines list for 1995 through 1998. Applications: The 2.5 L (2,497 cc) KL family uses an 84.5 mm × 74.2 mm (3.33 in × 2.92 in) bore and stroke. It includes

322-487: The introduction of Variable Resonance Induction System ( VRIS ). Based on the Helmholtz resonance principle, the intake manifold is equipped with 3 chambers tuned to a specific resonant frequency. The computer dynamically switches between each resonant chamber to achieve the appropriate resonant frequency for the engine's rpm. This effect optimizes volumetric efficiency over a given rpm range to provide maximum torque over

345-487: The manufacturer's championship. The Xedos 6's running gear was later used in a 323F built for the 1994 FIA Touring Car World Cup and driven by Neal. Mazda K engine#KF The Mazda K-series automobile engine is a short stroke 60° 24-valve V6 with belt-driven DOHC and all-aluminium construction. Displacements range from 1.8 L to 2.5 L. They all use a 27-degree DOHC valvetrain with directly actuated hydraulic bucket lifters . The K-series also features

368-415: The new Euro 1 emissions standards (reducing the power outputs by 7 hp (5 kW; 7 PS) for the 1.6 and 4 hp (3 kW; 4 PS) for the 2-litre, ) and again in 1996 to meet the new Euro 2 standards. The 1.6-litre versions, as well as the 2.0 Sport model, were withdrawn from production in 1998, a year before the remaining versions were withdrawn. The Eunos 500 used different engines to

391-462: The series after suffering injuries from a big crash in the sixth round at Silverstone , whilst Leslie withdrew halfway through the season due to budgetary problems. Leslie's best finishes were a pair of eighth positions at the first two rounds, whilst Neal's was a tenth at Snetterton. Neal finished 23rd in the championship, level with privateers James Thompson and Nigel Smith , whilst Leslie finished 20th. Mazda were classified tenth, and last, in

414-461: Was available with two different engines: a 1.6-litre straight-four (available in Europe from the beginning of production, in the UK from 1993 onwards ) and a 2-litre V6 (available everywhere from the car's launch) The 1.6-litre engine produced 114 hp (85 kW; 116 PS), and was criticized for being underpowered, whilst the 2-litre engine produced 144 hp (107 kW; 146 PS), and

437-450: Was held under 2000cc to minimize the annual Japanese road tax obligation. Applications: The 2.3 L (2,255 cc) 80.3 mm × 74.2 mm (3.16 in × 2.92 in) bore and stroke, KJ-ZEM was one of Mazda's most technologically advanced engines. It employs the " Miller cycle " which uses a supercharger to increase compression efficiency by decreasing the compression losses (i.e., flywheel energy used to compress

460-688: Was initially presented at the 1991 Tokyo Motor Show , and was based on the Mazda CA platform , also used by the Mazda Capella . The car entered full production in January 1992, with Japanese and Australian market models using the Eunos 500 name (as they were sold under the Eunos brand, and not the Mazda brand) and British models utilizing the Mazda Xedos 6 name. Left-hand drive versions of

483-621: Was not sold in the United States and Canada. The total quantity of Xedos 6 and Eunos 500 manufactured is 72101. By 1994, there was a larger model called the Mazda Xedos 9 , which was of a similar size to the BMW 5 Series . The Xedos 9 was marketed as the Eunos 800 in Japan and Australia , and as the Mazda Millenia in the United States. Neither version of the Xedos was popular, and a facelift in 1998 did little to improve matters. Production ceased in 2000. This article about

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506-489: Was praised for its smooth, free-revving nature. The V6 models were capable of up to 133 mph (214 km/h) with a manual transmission , and 125 mph (201 km/h) with an automatic transmission , and were claimed to be able to do 30-31 miles per gallon (imperial). In comparison, the 1.6-litre models had a top speed of 184 km/h (114 mph) with a manual transmission, or 175 km/h (109 mph) with an automatic. The engines were updated in 1994 to meet

529-557: Was used in the British Touring Car Championship in 1993 and 1994 . Roger Dowson Engineering ran the works Mazda team in 1993 (under the Mazda Racing Team name, ) with the Xedos 6 replacing the 323F that had been used in the previous season. Patrick Watts drove the Xedos 6 during the season, taking his first pole at Snetterton , and three fourth-place finishes. He finished 15th in

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