Page 1 of 8 123 ... LastLast
Results 1 to 10 of 71

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

Hybrid View

Previous Post Previous Post   Next Post Next Post
  1. #1
    Administrator Daox's Avatar
    Join Date
    Jan 2013
    Location
    Germantown, WI
    Country
    United States
    Posts
    4,947
    Thanks
    2,866
    Thanked 1,702 Times in 982 Posts

    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: 2014-2015: 55 kW (74 HP / 75 PS) @ 6000 rpm
    2017+: 78 HP @ 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 Injector Flow Rate: 233 cc/min [22 lb/min] link
    Fuel type: Unleaded regular gasoline, gasohol E10, E20
    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

    Images:

    Attachment 2228



    Above image: Alex16



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



    Name:  _1-1-mirage-dyno.jpg
Views: 18626
Size:  93.2 KB
    Above Dyno image from EcoModder.com - 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:


    Name:  3a92_04.jpg
Views: 17284
Size:  57.1 KB

    Name:  3a92_03.jpg
Views: 14060
Size:  54.4 KB

    Name:  3a92_02.jpg
Views: 13708
Size:  52.3 KB

    Name:  3a92_01.jpg
Views: 13370
Size:  50.7 KB
    Attached Images Attached Images     
    Last edited by Daox; 02-15-2013 at 03:02 PM.
    Custom Mirage products: Cruise control kit, Glove box light, MAF sensor housing, Rear sway bar, Upper grill block

    Current project: DIY Nitrous oxide setup for ~$100

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 47.2 mpg (US) ... 20.1 km/L ... 5.0 L/100 km ... 56.7 mpg (Imp)


  2. The Following User Says Thank You to Daox For This Useful Post:

    LurgidBee (05-29-2015)

  3. #2
    Junior Member
    Join Date
    Jan 2013
    Location
    Fond du Lac Wisconsin
    Country
    United States
    Posts
    3
    Garage empty: add car
    Thanks
    0
    Thanked 0 Times in 0 Posts
    A Metro owners dream !

  4. #3
    arollinstone - you're right on the money there.

    I think this car is essentially a modern-day Metro: similar size, weight & fuel economy to the last generation Metro, but with a more advanced engine (eg. MIVEC variable valve control) giving more power, safety & options.

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE 1.2 manual: 61.2 mpg (US) ... 26.0 km/L ... 3.8 L/100 km ... 73.5 mpg (Imp)


  5. #4
    Junior Member
    Join Date
    Jan 2013
    Location
    Fond du Lac Wisconsin
    Country
    United States
    Posts
    3
    Garage empty: add car
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Quote Originally Posted by MetroMPG View Post
    arollinstone - you're right on the money there.

    I think this car is essentially a modern-day Metro: similar size, weight & fuel economy to the last generation Metro, but with more power, safety & options.
    MetroMPG, You were the one that turned me into a Metro fanatic since way back when. I've got extra parts up the ying and yang.

    I can routinely attain 70 + mpgs in any metro I touch. Another 10, maybe even 5 years I'll have one of these to mess with.

    Could you imagine the mpgs we'd get with the Valve timing Electronic Control, multipoint fuel injection or direct injection. I hope

    they come up with more transmission gear ratios and such so we can mess with that too.

  6. #5
    Administrator Daox's Avatar
    Join Date
    Jan 2013
    Location
    Germantown, WI
    Country
    United States
    Posts
    4,947
    Thanks
    2,866
    Thanked 1,702 Times in 982 Posts
    It seems to have most of the bells and whistles. The start/stop would certainly be great to have here. Sadly, I doubt they'll bring it here due to the EPA (US fuel economy) test not accounting for cars being stopped sitting at a light or stop sign. Start/stop systems show zero benefit on this test cycle despite real world benefits of around 10% in city driving.

    Another thing I noted was that it doens't have is direct injection. Most of the new engines have this, but both of the Mirage engines have multipoint fuel injection. I was reading in some Australian (I think) article where they claimed that they dropped the idea of direct injection due to the cost of adding it. There was also the issue with fuel quality in developing countries that makes direct injection a bit more finicky.
    Last edited by Daox; 01-21-2013 at 05:59 PM.
    Custom Mirage products: Cruise control kit, Glove box light, MAF sensor housing, Rear sway bar, Upper grill block

    Current project: DIY Nitrous oxide setup for ~$100

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 47.2 mpg (US) ... 20.1 km/L ... 5.0 L/100 km ... 56.7 mpg (Imp)


  7. #6
    Junior Member
    Join Date
    Feb 2013
    Location
    Albany, NY
    Country
    United States
    Posts
    11
    Garage empty: add car
    Thanks
    15
    Thanked 8 Times in 4 Posts
    Quote Originally Posted by Daox View Post
    It seems to have most of the bells and whistles. The start/stop would certainly be great to have here. Sadly, I doubt they'll bring it here due to the EPA (US fuel economy) test not accounting for cars being stopped sitting at a light or stop sign. Start/stop systems show zero benefit on this test cycle despite real world benefits of around 10% in city driving.

    Another thing I noted was that it doens't have is direct injection. Most of the new engines have this, but both of the Mirage engines have multipoint fuel injection. I was reading in some Australian (I think) article where they claimed that they dropped the idea of direct injection due to the cost of adding it. There was also the issue with fuel quality in developing countries that makes direct injection a bit more finicky.
    I'm almost glad they don't have it because a few companies are having a new problem as a result of direct injection - carbon choking the intake valves. Audi has a huge problem and some cars are having problems in just 10,000 miles.

    Take a look:
    http://www.edmunds.com/autoobserver-...-adopters.html

  8. The Following 2 Users Say Thank You to blownb310 For This Useful Post:

    Canoehead (11-01-2013),deleted user (05-16-2015)

  9. #7
    Junior Member
    Join Date
    Oct 2020
    Location
    Florida
    Country
    United States
    Posts
    17
    Thanks
    0
    Thanked 8 Times in 6 Posts
    Quote Originally Posted by Daox View Post
    It seems to have most of the bells and whistles. The start/stop would certainly be great to have here. Sadly, I doubt they'll bring it here due to the EPA (US fuel economy) test not accounting for cars being stopped sitting at a light or stop sign. Start/stop systems show zero benefit on this test cycle despite real world benefits of around 10% in city driving.

    Another thing I noted was that it doens't have is direct injection. Most of the new engines have this, but both of the Mirage engines have multipoint fuel injection. I was reading in some Australian (I think) article where they claimed that they dropped the idea of direct injection due to the cost of adding it. There was also the issue with fuel quality in developing countries that makes direct injection a bit more finicky.
    I personally wouldn’t want a car with a Start/Stop system because while they do help improve fuel economy there is a lot of extra wear on the engine and starter since most engine wear happens on startup. I’m just reminded of when I was in the Air Force and while working around aircraft you weren’t allowed to leave an unoccupied vehicle running so our vehicles were constantly being shut off and the restarted to go to the next aircraft. As a result the starters were having to be replaced every few months and several of them started using oil. Our main vehicle only had 15K miles on it but was on its 4th or 5th starter.

  10. #8
    I don't mind the lack of Auto Start/Stop. I can do that myself.

    ---

    arollinstone - so far I've only seen one set of gear ratios published (here). I'm seriously hoping they don't "dumb down" the ratios for Canada/US to cater to drivers here who aren't willing/capable of downshifting from top gear when more power is needed. I want my tall top gear!

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE 1.2 manual: 61.2 mpg (US) ... 26.0 km/L ... 3.8 L/100 km ... 73.5 mpg (Imp)


  11. #9
    Junior Member
    Join Date
    Jan 2013
    Location
    Fond du Lac Wisconsin
    Country
    United States
    Posts
    3
    Garage empty: add car
    Thanks
    0
    Thanked 0 Times in 0 Posts
    Quote Originally Posted by MetroMPG View Post
    I don't mind the lack of Auto Start/Stop. I can do that myself.

    ---

    arollinstone - so far I've only seen one set of gear ratios published (here). I'm seriously hoping they don't "dumb down" the ratios for Canada/US to cater to drivers here who aren't willing/capable of downshifting from top gear when more power is needed. I want my tall top gear!
    I feel ya MetroMPG, I followed in your foot steps and got spoiled by the 3.52s. 2400 rpms at 60 mph but I don't go that fast.

  12. #10
    Senior Member
    Join Date
    May 2014
    Location
    Paducah, KY
    Country
    United States
    Posts
    625
    Thanks
    160
    Thanked 263 Times in 164 Posts
    Quote Originally Posted by MetroMPG View Post
    I don't mind the lack of Auto Start/Stop. I can do that myself.

    ---

    arollinstone - so far I've only seen one set of gear ratios published (here). I'm seriously hoping they don't "dumb down" the ratios for Canada/US to cater to drivers here who aren't willing/capable of downshifting from top gear when more power is needed. I want my tall top gear!
    Darin have you noted on the tester that you can't really do the start/stop? At least on my car, it has to be at a complete stop before I can use the button to stop the engine. Same for you?
    Resident Tire Engineer

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage ES 1.2 manual: 44.4 mpg (US) ... 18.9 km/L ... 5.3 L/100 km ... 53.3 mpg (Imp)


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •