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All buying an mx5 Mazdarotary enginerotary engines are essentially a single family - they all derive from the firstrotary engineexperiments in the early 1960sbuy a car, buying an mx5, buying usedcarsOver the years, displacement has been increased (somewhat) buying an mx5 , and turbocharging has been added to great effect buy a car, buying an mx5, buying usedcarsThis is the engine family that made Mazdafamousbuy a car, buying an mx5, buying usedcars
In auto racingand for Japanese tax purposes, the displacement of rotary buying an mx5 engine engines is defined as the equivalent of 1.5 times the nominal displacementbuy a car, buying an mx5, buying usedcarsSo the 1.3 L 13B engines count as just under 2.0 L for these purposes buy a car, buying an mx5, buying usedcars
rotary enginebuying an mx5 engines can be classified by their rotor size in terms of width (diameter) and depth (thickness)buy a car, buying an mx5, buying usedcarsThese metrics function similarly to the bore and stroke measurements of a piston engine buy a car, buying an mx5, buying usedcarsbuying an mx5 Nearly all Mazdaproductionrotary engineengines share a single rotor diameter: 105 mm (4.1 in) with a 15 mm (0.6 in) crankshaft offsetbuy a car, buying an mx5, buying usedcarsThe only engine to diverge from this formula buying an mx5 was the rare 13A, which used a 120 mm (4.7 in) diameter and 17.5 mm (0.7 in) offset buy a car, buying an mx5, buying usedcars
40A
Mazda's first prototyperotary enginewas the 40A, a single-rotor engine buying an mx5 very much like the NSU KKM400buy a car, buying an mx5, buying usedcarsAlthough never produced in volume, the 40A was a valuable testbed for Mazdaengineers, and quickly demonstrated two serious challenges to the feasibility of the design: buying an mx5 chatter marks in the housing and heavy oil consumptionbuy a car, buying an mx5, buying usedcarsThe chatter marks, nicknamed devil's fingernails, were caused by improper sealing at the apex of the rotor buy a car, buying an mx5, buying usedcarsThe oil consumption problem was buying an mx5 addressed with heat-resistant rubber oil seals at the sides of the rotors buy a car, buying an mx5, buying usedcarsThis early engine had a rotor diameter of 90 mm (3.5 in) , an offset of 14 mm (0.6 in) buying an mx5 , and a depth of 59 mm (2.3 in) buy a car, buying an mx5, buying usedcars
L8A The very first MazdaCosmo prototype used a 798 cc L8A two-rotorrotary enginebuy a car, buying an mx5, buying usedcarsThe engine and car buying an mx5 were both shown at the 1963 Tokyo Motor Show buy a car, buying an mx5, buying usedcarsHollow cast iron apex seals reduced vibration and thus chatter marks buy a car, buying an mx5, buying usedcarsIt used dry-sump lubrication buy a car, buying an mx5, buying usedcarsRotor diameter was up from the buying an mx5 40A to 98 mm (3.9 in) , but depth dropped to 56 mm (2.2 in) buy a car, buying an mx5, buying usedcars
One-, three-, and four-rotor derivatives of the L8A were also created for experimentation buy a car, buying an mx5, buying usedcars
buying an mx5 10A The 10A series was Mazda's first productionrotary engine, appearing in 1965buy a car, buying an mx5, buying usedcarsIt was a two-rotor design, with each displacing 491 cc for a total of 982 cc buy a car, buying an mx5, buying usedcarsThese buying an mx5 engine featured the mainstream rotor dimensions with a 60 mm (2.4 in) depth buy a car, buying an mx5, buying usedcars
The rotor housing was made of sand-cast aluminum plated with chrome, while the aluminum sides were sprayed with buying an mx5 molten carbon steel for strength buy a car, buying an mx5, buying usedcarsCast iron was used for the rotors themselves, and their eccentric shafts were of expensive chrome-molybdenum steel buy a car, buying an mx5, buying usedcarsThe addition of aluminum/carbon apex seals addressed the chatter buying an mx5 mark problem buy a car, buying an mx5, buying usedcars
0810 The first 10A engine was the 0810, used in the Series I Cosmo from May, 1965 through July, 1968 buy a car, buying an mx5, buying usedcarsThese cars, and their revolutionary engine, were buying an mx5 often called L10A modelsbuy a car, buying an mx5, buying usedcarsGross output was 110 hp (82 kW) at 7000 RPM and 130 Nm (96 ft.lbf) at 3500 RPM, but both numbers were probably optimistic buy a car, buying an mx5, buying usedcars
The 10A buying an mx5 featured twin side intake ports per rotor, each fed by a one of four carburetor barrels buy a car, buying an mx5, buying usedcarsOnly one port per rotor was used under low loads for added fuel economy buy a car, buying an mx5, buying usedcarsA buying an mx5 single peripheral exhaust port routed hot gas through the coolest parts of the housing, and engine coolant flowed axially rather than the radial flow used by NSU buy a car, buying an mx5, buying usedcarsA bit of oil was buying an mx5 mixed with the intake charge for lubrication buy a car, buying an mx5, buying usedcars
The 0810 was modified for the racing Cosmos used at Nürburgring buy a car, buying an mx5, buying usedcarsThese engines had both side- and peripheral-located intake ports switched with a buying an mx5 butterfly valve for low- and high-RPM use (respectively) buy a car, buying an mx5, buying usedcarsBy: Jon beal |
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