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Why doesn't Toyota turbo the 1GR-FE?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by myname150, Nov 9, 2011.

  1. Nov 9, 2011 at 2:34 PM
    #1
    myname150

    myname150 [OP] Well-Known Member

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    I know that ford just started their "EcoBoost V6", but the reliability of that motor hasn't really been proven yet. However, Volvo has been adding turbochargers to their engines for a long time. Some midrange cars/wagons get the low-pressure turbo, and the higher end models get a realllyyy nice, higher pressured turbo.

    Wouldn't having a well designed turbo that starts making power at low RPMs be beneficial for our trucks for towing/hauling, and to add on to that, wouldn't it improve city MPGs? And what about highway MPGs, I don't know if turbos improve much on the highway...

    I know the supercharger already exists, but would a factory turbo be that much more difficult (and expensive) to add or design to come stock?

    I'm not talking about a turbo diesel either, as nice as that would be, but i'm talking about a good ol' gasoline engine.

    Discuss? :D
     
  2. Nov 9, 2011 at 2:38 PM
    #2
    ToyComa92

    ToyComa92 Write your love, Then your anger.

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    I think Toyota is taking there name into consideration when opting out for the turbo, I can imagine Toyota doesn't need another big part under the hood that could malfunction, And cause more stress on the engine. I think Toyota is thinking of there reliability when it comes to a work truck, They really dont want to ruin that because of a turbo. Probably why they offer superchargers instead.
     
  3. Nov 9, 2011 at 2:40 PM
    #3
    brian

    brian Another Traitor

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    Fixed :D
     
  4. Nov 9, 2011 at 2:42 PM
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    Lucario Runner

    Lucario Runner Resident SUV racer

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    You could always custom fab a turbo kit, two of my friends have turbos on there tacos. But to most thats like reinventing the wheel as there is the TRD supercharger and then the URD one. I personally would love a turbo when I go into the F/I would. For most people and what they do the TRD alone would be enough. For me its never enough and I'm not even boosted.....yet.
     
  5. Nov 9, 2011 at 2:47 PM
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    brian

    brian Another Traitor

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    LMFAO.
     
  6. Nov 9, 2011 at 2:50 PM
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    myname150

    myname150 [OP] Well-Known Member

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    noooo i don't plan to install one now, I'm just contemplating the idea of having one from the factory already, either stock or as an option.

    Yeah I know our motors already produce a nice amount of power, hell it has quite a bit of grunt, but I'm also looking at efficiency. Would designing a motor with a turbo provide better MPGs? Also, since we can't get turbo diesels, a turbo that spools up at low rpms could provide a bunch of torque right?
     
  7. Nov 9, 2011 at 2:55 PM
    #7
    myname150

    myname150 [OP] Well-Known Member

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    Oh drats. haha well there goes my idea :p

    I thought the whole thing around ford's "ecoboost" was "improved fuel economy"?
     
  8. Nov 9, 2011 at 3:00 PM
    #8
    wrxRome

    wrxRome Houston's Swamp Rat

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    They improved it by like 1-2 mpg's...... Wow big whoop
     
  9. Nov 9, 2011 at 3:07 PM
    #9
    mr2r6

    mr2r6 Well-Known Member

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    The only reason factory turbo motors are more efficient is because of their compression ratio. Typically factory built turbo motor will have a lower compression ratio to be able to handle higher pressure/boost. The turbo isn’t spooling under normal driving conditions therefore the lower compressions will get better gas mileage. It’s when you need the extra power or want to hear the whine or pshhhh that its dumping a lot more fuel that’s when your gas mileage goes to the crapper. It’s like a CAI you get addicted to the “noises” and end up wasting more gas.

    Toyota put a turbo in the old late 80’s Toyota pickups and they were a hit. I agree with everyone else turbo motors (even factory built one) are a lot of maintenance. There are several components that go along with a turbo motor that a naturally aspirated motor does not need. Like someone said earlier that’s what Supras, Celicas and Mr2s are for.

    Now if Toyota did come out with one I’d buy it. That would be bad ass if the collaborated with Yamaha again to build a turbo motor like they did the 3sgte.
     
  10. Nov 9, 2011 at 3:08 PM
    #10
    RenoTacoma

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  11. Nov 9, 2011 at 3:14 PM
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    ForeRunner

    ForeRunner Scotch before noon. Moderator

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    BMW is supposedly working on an electric turbo. One that apparently works on the lower RPM range.

     
  12. Nov 9, 2011 at 3:15 PM
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    Thucker

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    Toyota probably does not do it for a few reasons.

    - The motor is designed to be a N/A motor, hence the high compression. If it was meant to be a turbo motor, it would have much lower compression, and would be completely gutless when it's out of boost.

    - Maintenance - More components, more parts that could possibly go bad. Tighter engine bays. Maintenance cost. Turbos do not last forever. Depending on driving habits, they can last anywhere from 30k-100k, and they're not cheap to replace.

    - Reliability - Majority of people don't maintain their own vehicles and do not have the first clue of what's wrong with their vehicle when something goes wrong. Toyota has always been known to make reliable vehicles. They tried making turboed trucks before, the 22RE-T. They stopped making them for a reason. I use to work at a car shop. I've seen people bring their vehicles in because the vehicle felt really weak and does not have any power. Turns out a coupler holding the charge pipes together got old, dried and cracked open, causing the engine to lose all boost pressure.
     
  13. Nov 9, 2011 at 3:22 PM
    #13
    05RedTaco

    05RedTaco Nom Nom Nom

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    Turboing non turbo motor is difficult and requires a lot of time and deep pockets. Been there, done that.

    When it runs its fun...
     
  14. Nov 9, 2011 at 3:35 PM
    #14
    Thucker

    Thucker Well-Known Member

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    I'm actually waiting for Toyota to bring a turbo Diesel to the US, and not a sissy diesel one. As soon as they do, I'll sell my Tacoma and get one.
     
  15. Nov 9, 2011 at 6:39 PM
    #15
    myname150

    myname150 [OP] Well-Known Member

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    Oh crap...erm well I've just got a used volvo with a turbo...i hope the previous owner took care of it. The motor seems to run fine and it's about to reach 150K.


    What more maintenance would you need with a turboed vehicle?

    As far as the BMW, of course the germans would attempt to do that, but more electronics = more things to go wrong right?

    Lol, it'd be terrible to have a BMW in a limp home mode (or some other reduced mode) because the turbo gave out.
     
  16. Nov 9, 2011 at 9:43 PM
    #16
    Kodachrome

    Kodachrome Well-Known Member

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    It's an open deck motor, great for cooling the heads but not for sustained loads under boost. When you have an open deck motor, the cylinders can wobble and compromise the head gaskets like it did on this guy's truck not to mention mine:

    http://www.tacomaworld.com/forum/pe...r-50k-miles-supercharger-being-installed.html

    Turbo's typically produce more boost than Superchargers and definitely more heat for the intercooler to get rid of since they are exhaust, not belt driven.

    The 1GR is a bruly motor, but I don't think it can handle regular loads over 10 PSI of boost without at least upgrading head gaskets, head studs, rods, pistons and a foolproof fuel and timing tune that goes well beyond the realm of stock.

    Go hang out on XRU for awhile in the boosted section, over a dozen blown motors due to the possible nature of something's limit being exceeded with otherwise great aftermarket boost goals not taking highly variable and subjective criteria into consideration...

    Boost on as they say but prepare to deal with issues of premature wear and having 25-50% less usable engine life depending on how often and how robustly you plant your foot in it.

    Personally I am ok with the risk, I need the boost big time in my application, the truck is payed off long ago and I can afford to build a forged 400 HP brute in another 30-50 thousand miles.
     
  17. Nov 9, 2011 at 9:52 PM
    #17
    KenLyns

    KenLyns Lord of War

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    Hasn't Toyota been using turbodiesels in Hiluxes for years? I'm sure Toyota knows how to make it reliable. Probably just a cost barrier. Toyota doesn't even want to spend a few pennies to implement dual-VVTi. Why would they consider a more expensive option?
     
  18. Feb 16, 2013 at 10:38 PM
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    AFZ

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    I know this old but there is a lot of bad information in this thread.


    That does not mater, Toyota would know well enough to re-spec the engine. New pistons, cams, maybe some rods and a revised ECU tune. I'm not sure how a 4.0l engine would suddenly become gutless either.


    Lies. There is no extra "maintenance" with a OEM turbo system. There are no turbo filter changes, or intercooler fluid changes. Performing REGULAR maintenance, maintenance found on any normal car becomes more important, but then again we are just talking about regular oil changes. Many non-performance engine come OEM non-turbo and easily make it to 200k miles or more. Volkswagen, Ford, BMW and others are now pumping out plenty of turbo cars with every intent that they will be low cost to own and last +200k miles.



    A lot has changed in 30 years. Turbo technology was in its infancy for many manufactures back in the 80's. Look at all the diesel trucks that are pulling a half-million miles and the dozens of new car models coming out with turbos.


    With all that said, I don't think a OEM Turbo 1GR-FE is the solution for Toyota. The engine does all right in gas mileage and the Tacoma is not struggling to make power - right now. A more powerful V6 should be invested in and I do believe Toyota has that in the works.

    Dodge has just announced it's 3.0 V6 turbo diesel 1500 Ram and I wold like to think Toyota would eventually get us a I4 Turbo Diesel.
     
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