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Thread: 3A92 1.2L 3-cylinder Mirage / Space Star engine info (specs, specifications)

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    Administrator Daox's Avatar
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    3A92 1.2L 3-cylinder Mirage / Space Star engine info (specs, specifications)

    Lets start with the 3A92's specs:

    Displacement: 1.2L (1193 CC)
    Cylinders: 3
    Valves: 12
    Maximum Output: 55 kW (74 HP / 75 PS) @ 6000 rpm
    Maximum Torque: 100 Nm (74 lb·ft) @ 4000 rpm
    Bore: 75mm
    Stroke: 90mm
    Compression Ratio: 10.5:1
    Interference: Yes
    Intake Cam Lift: 36mm base circle + 8.9mm lift
    Exhaust Cam Lift: 36mm base circle + 8.0mm lift
    Fuel Delivery: multi point fuel injection
    Fuel type: Unleaded regular gasoline, gasohol E10, E20
    Valve Technology: DOHC, MIVEC (Mitsubishi Innovative Valve timing Electronic Control) - see video: New MIVEC continuously variable valve control mechanism
    Fuel Economy: see Fuel economy ratings by country

    For parts changes over the years, see 3A92 engine parts history.

    For info on the 3A90 (1.0 L) engine see here: 3A90 Engine Information


    Attachment 2228

    Above image: Alex16

    3A92 (red) and 3A90 (orange) comparison.

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    Above Dyno image from - Note this is a Philippine spec Mirage and it may not share the same factory tune as all other countries.

    Image thanks to Nimmic.

    Image thanks to ShiroMirage:

    Image thanks to ShiroMirage:

    Image thanks to ShiroMirage:

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    Attached Images Attached Images     
    Last edited by Daox; 02-15-2013 at 04:02 PM.
    Custom Mirage products: Cruise control kit, Glove box light, MAF sensor housing, Rear sway bar

    Current project: Alternator delete with regen braking modification


        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 45.6 mpg (US) ... 19.4 km/L ... 5.2 L/100 km ... 54.8 mpg (Imp)

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