Nissan MA09ERT engine The MA09ERT is a mass-produced SOHC internal combustion engine manufactured by Nissan Motors . It is a series-charged design, seldom seen in Japanese vehicles.Description The "Nissan PLASMA" MA09ERT was based on the K10ET engine; Nissan attempted to improve performance and response by adding a supercharger to the MA10ET engine, which is a four-cylinder water-cooled OHC engine with a V-type valve arrangement and hemispherical combustion chambers, with sequential fuel injection . The supercharger improved the response and the output in the low-rpm region, and a new larger HT10 turbocharger aimed to improve output in the high-rpm regions. An intercooler and an updated intake manifold were added, the latter having a much larger throttle body and improved fuel rail . The result was an increase in output to 110ps from 74ps, and a much broader range of torque . Other changes included a reduction of engine capacity from 988 cc to 930 cc; this strengthened the engine by increasing the bore wall thicknesses by 1 mm , and allowed cars using it to enter competition classes not otherwise possible due to rules on forced induction . The first prototypes of these engines were installed in the March Superturbo R/March R in 1988, shortly after the engine was installed in the March Superturbo. The MA09ERT was the first series-charged engine available in Japan; series charging combines the increased low-speed torque of supercharging with the increased high-speed torque and power of turbocharging. The presence of the supercharger also mimizes the effects of turbo lag .Specifications Engine serial code: MA09ERT Water-cooled 4-cylinder inline, air-air intercooler Capacity: 930 ccCombustion chamber shape: hemispherical Valve system: SOHC Bore × stroke: 66.0×68.0 mm Compression ratio: 7.7 Compression pressure: 100 million kgf/cm² at 350 rpm Max power : 110 PS at 6400 rpm Max torque : 13.3 kgf·m at 4800 rpmSpecific fuel consumption : 255 g/ at 1200 rpm Size : 705×575×680 mm Maintenance weight: about 111 kg Valve timingsInlet: 11.57 Exhaust: 57.17 Valve clearances HotInlet: 0.25 mm Exhaust: 0.30 mm Idle rpm: M/T 750 and A/T 850 Ignition timing at idle: 15° BTDC Oil System Cold-weather model and 7.5 standard/W-30 Recommended oil grade: . 7.5W-30. Sump capacity: ~3.0 L Oil filter capacity: ~0.2 L SC oil capacity: 110 L Shinteso MT150 made of NOK Cruba Coolant capacity: ~4.0LExhaust gas purifier specificationsFuel supply device: Nissan Motor NISSAN ECCS Starting aids: Bimetal type air regulator Air heating: Warm water heating on intake manifold. Igniter: No point of contact type Emission-reduction device: 3-way Catalyst type and Falcat device Catalytic converter capacity: 0.5L Maintenance target value: Idle CO/HC density of below 0.1% and 50 ppm respectively. Air-fuel ratio control system: O2 sensor + ECCS control unit Ignition timing controller/control of Sscac: Electronic Exhaust temperature warning device : Fuse type Fuel evaporation gas control device: Canister type Crankcase emission control system: Close type.Engine size Cylinder block height : 177 mm Cylinder block length: 360 mm Pitch between boas: P 79 mm Cylinder boa diameter: D 66 mm Stroke length: S 34 mmCrank shaft Journal diameter: bj 45 mm Crank shaft Pin diameter: db 40 mm Crank shaft The total length: L 398 mm Piston compression height: C 26 .5 mm Conrod center spacing: Lc 114.5 mm Cylinder liner meat thickness: 3.5 mmPiston/piston pin Construction material: Aluminum alloy Skirt outside diameter: 65.967 mm Height: 51 mm Compression height: 26.5 mm Convex height of crown: 4.0 mm Crown irregularity capacity: 17.5 mm Pin length: 58 mm Outside diameter: 17.5 mm Engagement method of pin and Conrod: interference fit Piston ring The top B×T: 1.5 mm×2.5mm Outer shape: Barrel force Surface treatment: Nitride processingSecond base B×T: 1.5 mm×2.9mm Outer shape: Taper Surface treatment: Chrome plating Oil B×T: 2.8 mm×2.8mmConrod/Conroddobearing Conrod center spacing: 14.5 mm Large edge diameter: 43 mm Small edge diameter: 17.5 mm Width of large edge: 20.0 mm Width of small edge: 20.0 mm Inside diameter of bearing: 40 mm Width: 17 mm Bolt Size of screw: M8 Length under neck: 44 mm Assembly weight: ~390 grams Engagement method of piston pin: interference fitCrank shaft specification Total length: L 398.7 mm Pin diameter: dp 40 mm Journal diameter: dj 45 mm Stroke: S 34 mmValve, valve guide and valve seat (intake/exhaust valves) Valve diameter: φ35 mm / φ30 mm Stem diameter: φ7 mm / φ7 mmValve spring Intake/exhaust Line diameter: 3.8 mm / 3.8 mm Average of coil level 23 .8 mm / 23.8 mm Installation load: 16.5 kg / 16.5 kg Travel: 40.6 mm / 40.6 mmOil pump rotational speed: 750/1000/3000 rpm Exhalation pressure: ~2-4 kg/c㎡ Injection valve opening pressure: 3.5~4.0 kg/c㎡Camshaft specification Part Intake/exhaust Operation angle: 62/62 degrees Amount of cam lift: 5.5/5.6 mm Central angle: 23/17 degrees Overlap: 28 degreesTiming belt and sprocket specification Sprocket teeth on camshaft: 36 Sprocket teeth on water pump: 19 Sprocket teeth on crank: 18 Timing belt teeth: 91
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