Nissan MA
This article was entered on the quality assurance page of the transport and traffic portal .
Please help improve it and join the discussion . ( + )
The Nissan MA engine range was newly developed for the Nissan Micra K10, which was launched in Japan in 1982 and in Germany in 1983 . Various details from the A and E engine series of the larger vehicles of the time were adopted.
The engine was constructed exclusively in 2-valve technology. The engine block and cylinder head are made entirely of aluminum, which results in a very low weight of only 70 kg (including intake and exhaust manifold and alternator).
In addition to the 1.0-liter and 1.2-liter carburettor versions available in Germany, there was also a 1.0-injection, 1.0-turbo and 0.9-liter turbo + compressor in other countries -Version.
The following MA engines were built by Nissan:
- MA09ERT
- MA10ET
- MA10E
- MA10S
- MA12S
The engines were installed in the following Nissan models, all based on the K10 platform:
The E15S engine was installed in the Nissan S-Cargo , also based on the K10. The Nissan MA10E was in the kit, with the Nissan Saurus Jr. sold.
The breakdown of the engine code:
- MA = motor series MA
- 09/10/12 = [displacement in cm³] / 100
- S = carburetor
- E = Multipoint injection (also known as Nissan ECCS)
- R = roots compressor
- T = turbocharger
Nissan MA10S
The MA10S was the first engine in the MA engine range. It served as the basis for all subsequent versions of the engine.
Mixture preparation
-
- Versions without KAT have a downdraft register carburetor with an electronic shut-off valve to prevent overrun
- for versions with KAT a downdraft register carburetor with mixture control valve and shut-off valve
- This carburetor version is also called single point injection, whereby it should be noted here that the mixture control valve does not inject fuel, but rather adds additional air, which achieves rudimentary mixture regulation.
-
Performance data
- Power without EGR / KAT: 40KW / 55PS at 6,000 / min
- Torque without EGR / KAT: 76 Nm at 3,600 rpm
- Power with EGR / KAT: 37KW / 50PS at 6,000 / min.
- Torque with EGR / KAT: 72 Nm at 3,600 rpm.
Motor data
- Bore: 68 mm
- Stroke: 68 mm
- Bore-to-stroke ratio: 1.0
- Compression 9.5: 1 or 10.3: 1
- 2 valves per cylinder (attached at an angle to each other, not perpendicular)
- Inlet valve: 35 mm diameter
- Outlet valve: 30 mm diameter
- central camshaft driven by toothed belt (very similar to Opel CIH )
- hemispherical combustion chamber
- hemispherical piston crown (different compression heights)
- Cross-flow cylinder head
- centrally located spark plug
materials
- All-aluminum engine block
- All-aluminum cylinder head
- dry steel cylinder liners
crankshaft
- Crankshaft with 5 bearings
- Main bearing diameter 45 mm
- Main bearing width 17.1 mm
- Connecting rod bearing diameter 40 mm
- Connecting rod bearing width 15.1 mm
- Crankshaft with holes through the connecting rod journals for weight reduction
Lubrication system
- Oil content: 2.8 liters (viscosity 10W-40, 15W-40, 20W-50; depending on the application)
- Oil pump in the oil pan, driven by the camshaft via a shaft-gear combination
Cooling system
- Coolant content 4 liters
- Cooling system with expansion tank
Ignition without KAT or with U-KAT
- Vacuum-adjusted ignition distributor, driven by camshaft
- Firing order: 1-3-4-2
- Ignition timing: 2 ° after TDC at 750 / min to 850 / min (for manual transmission)
- Spark plug: NGK BPR4ES, NGK BPR5ES, NGK BPR6ES (depending on the application)
Ignition with CAT
- electronically adjusted transistor ignition, driven by camshaft
- Firing order: 1-3-4-2
- Ignition point: 10 ° before TDC at 750 / min to 850 / min (for manual transmission)
- Spark plug: NGK BPR4ES-11, NGK BPR5ES-11, NGK BPR6ES-11 (depending on the application)
Engine control
- Control unit without CAT: for shut-off valve
- Control unit with CAT: for shut-off valve, ignition setting and mixture regulation
useful information
- To set the ignition on an MA10S without KAT, the hose of the vacuum adjustment unit on the ignition distributor must be removed. Hence the very moderate value of 2 ° after TDC.
Nissan MA12S
The Nissan MA12S is an expanded version of the MA10S. It came onto the market around 1987 with the facelift of the Micras. It largely corresponds to the data of the MA10. The stroke (crankshaft), the bore (piston, cylinder), the length of the connecting rod and the cylinder head (bore diameter) have been changed.
Mixture preparation
-
- Versions without KAT have a downdraft register carburetor with an electronic shut-off valve to prevent overrun
- for versions with KAT a downdraft register carburetor with mixture control valve and shut-off valve
- This carburetor version is also called single point injection, whereby it should be noted here that the mixture control valve does not inject fuel, but rather adds additional air, which achieves rudimentary mixture regulation.
-
Performance data
- Power without KAT: 44KW / 60PS
- Torque without EGR / KAT: 98 Nm at 3000 rpm
- Power with KAT: 40KW / 55PS
- Torque without EGR / KAT: 92 Nm at 3000 rpm
Motor data
- Bore: 71 mm
- Stroke: 78 mm
- Bore-to-Stroke Ratio: 1.099
- Compression 9: 1
- 2 valves per cylinder (attached at an angle to each other, not perpendicular)
- Inlet valve: 35 mm diameter
- Outlet valve: 30 mm diameter
- central camshaft driven by toothed belt (very similar to Opel CIH )
- hemispherical combustion chamber
- hemispherical piston crown
- Cross-flow cylinder head
- centrally located spark plug
materials
- All-aluminum engine block
- All-aluminum cylinder head
- dry steel cylinder liners
crankshaft
- Crankshaft with 5 bearings
- Main bearing diameter 45mm
- Main bearing width 17.1mm
- Connecting rod bearing diameter 40mm
- Conrod bearing width 15.1mm
- Crankshaft with holes through the connecting rod journals for weight reduction
Lubrication system
- Oil content: 2.8 liters (viscosity 10W-40, 15W-40, 20W-50; depending on the application)
- Oil pump in the oil pan, driven by the camshaft via a shaft-gear combination
Cooling system
- Coolant content 4 liters
- Cooling system without expansion tank (overpressure cooling system)
Ignition in all versions
- electronically adjusted transistor ignition, driven by camshaft
- Firing order: 1-3-4-2
- Ignition point: 10 ° before TDC at 750 / min to 850 / min (for manual transmission)
- Spark plug: NGK BPR4ES-11, NGK BPR5ES-11, NGK BPR6ES-11 (depending on the application)
Engine control
- Control unit without CAT: for shut-off valve and ignition adjustment
- Control unit with CAT: for shut-off valve, ignition setting and mixture regulation
useful information
- Often you can read about blown cylinder head gaskets on Nissan MA12 engines . However, this is due to an initially insufficient tightening torque for the cylinder head screws. In a circular to the Nissan workshops, Nissan raised the torque to 65 Nm to 69 Nm. If a new seal has to be installed, this must be observed, otherwise the damage will recur. Tightening the screws even tighter is strongly not recommended, as the screws are turned directly into threads in the aluminum block, which tend to tear out at even higher forces, which results in a very complex repair.
- The MA12S was also used by Platzer Kiebitz in his models and plans for models, as it is very light, as described.
Nissan MA10ET
The MA10ET came onto the Japanese market around 1985 with the introduction of the March Turbo. It is a MA10S enhanced with a turbocharger and ECCS.
Mixture preparation
- Nissan ECCS
Performance data
- Power: 55KW / 75PS at 6,000 / min
- Torque: 120 Nm at 4,400 rpm
Motor data
- Bore: 68 mm
- Stroke: 68 mm
- Bore-to-stroke ratio: 1.0
- Compression 8: 1
- 2 valves per cylinder (attached at an angle to each other, not perpendicular)
- Inlet valve: 35 mm diameter
- Outlet valve: 30 mm diameter
- central camshaft driven by toothed belt (very similar to Opel CIH )
- hemispherical combustion chamber
- Hemispherical piston crown (different compression heights)
- Cross-flow cylinder head
- centrally located spark plug
materials
- All-aluminum engine block
- All-aluminum cylinder head
- dry steel cylinder liners
crankshaft
- Crankshaft with 5 bearings
- Main bearing diameter 45 mm
- Main bearing width 17.1 mm
- Connecting rod bearing diameter 40 mm
- Connecting rod bearing width 15.1 mm
- Crankshaft with holes through the connecting rod journals for weight reduction
Lubrication system
- Oil content: 2.8 liters (viscosity 10W-40, 15W-40, 20W-50; depending on the application)
- Oil pump in the oil pan, driven by the camshaft via a shaft-gear combination
Cooling system
- Coolant content 4 liters
- Cooling system with expansion tank
ignition
- electronically adjusted transistor ignition, driven by camshaft
- Firing order: 1-3-4-2
- Ignition point: 10 ° before TDC at 750 / min to 850 / min (for manual transmission)
- Spark plug: NGK BPR4ES-11, NGK BPR5ES-11, NGK BPR6ES-11 (depending on the application)
useful information
- The MA10ET was manufactured in two versions. There were versions A-1 and A-2, the latter being built into the Figaro FK10. The MA10ET A-1 was first found in the Nissan March Turbo around 1985.
Nissan MA09ERT
The Nissan MA09ERT is an enhanced version of the MA10ET. It was introduced in the Nissan Micra SuperTurbo around 1988. The engine was slightly reduced in displacement, but expanded with a roots compressor. This allowed the performance of the 75PS strong MA10ET to increase to 110PS (in the MA09ERT).
Mixture preparation
- Nissan ECCS multipoint injection
Charging
- Roots compressor, belt driven
- turbocharger
Performance data
- Performance without KAT: 81KW / 110PS at 6,400 min -1
- Torque without KAT: 130 Nm at 4800 min -1
Motor data
- Bore: 68 mm
- Stroke: 66 mm
- Bore-to-stroke ratio: 0.971
- Compression 7.7: 1
- 2 valves per cylinder (attached at an angle to each other, not perpendicular)
- Inlet valve: 35 mm diameter
- Outlet valve: 30 mm diameter
- central camshaft driven by toothed belt (very similar to Opel CIH )
- emispheric combustion chamber
- hemispherical piston crown
- Cross-flow cylinder head
- centrally located spark plug
materials
- All-aluminum engine block
- All-aluminum cylinder head
- dry steel cylinder liners
crankshaft
- Crankshaft with 5 bearings
- Main bearing diameter 45 mm
- Main bearing width 17.1 mm
- Connecting rod bearing diameter 40 mm
- Connecting rod bearing width 15.1 mm
- Crankshaft with holes through the connecting rod journals for weight reduction
Lubrication system
- Oil content: 2.8 liters (viscosity 10W-40, 15W-40, 20W-50; depending on the application)
- Oil pump in the oil pan, driven by the camshaft via a shaft-gear combination
Cooling system
- Coolant content 4 liters
- Cooling system with expansion tank (overpressure cooling system)
Ignition in all versions
- electronically adjusted transistor ignition, driven by camshaft
- Firing order: 1-3-4-2
- Ignition point: 15 ° before TDC at 750 / min (automatic) to 850 / min (manual transmission)
Engine control
- Nissan ECCS
literature
- Trevor Alder: Nissan Micra ; ISBN 1858473462
- Repair instructions: Part volume no. 1164/1166. Nissan Micra from 1989: 1.0 / 1.2-liter carburettor engine, 1.0 / 1.3-liter injection engine ; Zug: Bucheli 1993; ISBN 3-7168-1862-3
- Repair instructions: Nissan Micra without turbocharger from October 1982 ; Zug: Bucheli 1993; ISBN 3-7168-1717-1
- Nissan Micra (= This is how it's done, vol. 85); Bielefeld: Delius Klasing, 1993; ISBN 3 76880 801 7
- Micra's double boost ; in: Autocar & Motor, issue February 1989, page 9
- Japan's little ones: more than just fillers ; in: Autobild from December 12, 1988, from page 8
- Nissan brochure number 100.01.87, German edition; Title Nissan Micra
- Nissan brochure number 201.0292.200, German edition; Title Micra Hit S
- Nissan brochure number 200.03.91, German edition; Title Micra - technology and equipment
- Nissan brochure number 200.09.91, German edition; Title Micra
- Nissan brochure number 100/1/84, German edition; Title Nissan / Datsun Micra
- Nissan brochure number 300901, Dutch edition; Title Nissan Micra
- Nissan brochure number S24.GN.J1005.100m.7.87, British edition; Title Nissan Micra
- Nissan brochure number S24.100m.D1005.5.83, British edition; Title Nissan Micra
- Nissan brochure number 3.90.10000, Finnish edition; Title Nissan Micra KAT
- Nissan brochure number 99999-01906 EN, Canadian edition; Title Nissan Micra 1988
- Nissan press kit for the models from 1989
- Nissan press kit for the models from 1990
Individual evidence
- ↑ Ultimatecarpage.com , About the Saurus NJS-91 and NJS-93
- ↑ Nissan board , thread about tuning the MA12 in an aircraft.
- ↑ Carview , Japanese