Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

  1. Welcome to GM Inside News Forum Ė General discussion forum for GM

    Welcome to GM Inside News Forum - a website dedicated to all things GM.

    You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, Join GM Inside News Forum today!
     
Page 1 of 4 123 ... LastLast
Results 1 to 15 of 52

Thread: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

  1. #1
    6.2 Liter LS3 V8 asrapid1's Avatar
    Join Date
    Sep 2011
    Location
    Croatia
    Posts
    3,086
    Thanks
    169
    Thanked 1,109 Times in 615 Posts

    Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    From

    Engineering Explained
    27 May 2020


  2. The Following 4 Users Say Thank You to asrapid1 For This Useful Post:

    BlackGTP (05-27-2020),gkr778 (05-27-2020),tripowergto Jan2003 (05-27-2020),Z284ever (05-27-2020)

  3. Remove Advertisements
    GM Inside News
    Advertisements
     

  4. #2
    7.0 Liter LS7 V8 unkillsam's Avatar
    Join Date
    Aug 2006
    Location
    Philadelphia, PA
    Posts
    4,766
    Thanks
    314
    Thanked 622 Times in 322 Posts
    My Ride
    2014 Chevrolet SS PBM

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    Video should say GM truck engine that's tuned to run on premium gas (and is good enough to be better then the actual Caddy 4 engine).
    "The car's brilliant and ... a great surprise, pleasant surprise for all Corvette lovers everywhere ... a huge shock to our competitors ... because I don't think anybody was expecting something that good. What pleases me the most about it was that ... I can say this is the first car that's come out, that was done since I left.

    -- Bob Lutz, former vice chairman and head of global product development at GM

  5. #3
    News Contributor BlackGTP's Avatar
    Join Date
    Jul 2008
    Location
    Connecticut
    Posts
    15,058
    Thanks
    6,787
    Thanked 9,314 Times in 4,560 Posts
    My Ride
    2013 Cadillac ATS - Black

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    That's pretty cool, I love videos like this that can explain the working in laymen's terms. I'm a layman and I like the terms! Very nice engine in the CT4, I drove it in the premium luxury and walked away impressed!

    Has anyone seen any real world Silverado mpg's V8 vs. this 2.7T? Curious if reality gives the turbo better mpg's.

  6. Remove Advertisements
    GM Inside News
    Advertisements
     

  7. #4
    4.4 Liter Supercharged Northstar gkr778's Avatar
    Join Date
    Jun 2016
    Location
    Southaven, Mississippi USA
    Posts
    2,969
    Thanks
    3,845
    Thanked 2,910 Times in 1,482 Posts
    My Ride
    2014 BMW 320i and '72 Nova

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    Quote Originally Posted by BlackGTP View Post
    Has anyone seen any real world Silverado mpg's V8 vs. this 2.7T? Curious if reality gives the turbo better mpg's.
    Car and Driver did a real world fuel economy test for 2019 Silverado 1500 RST 2.7T 4WD Double Cab. Here's what they found:

    "The undersquare engine, as youíd expect, is a grunter. Its 348 pound-feet of torque persists between 1500 and 4000 rpm, enough latitude to accommodate all normal driving. The 310-hp peak comes at 5600 rpm, only 100 rpm before redline, but youíll never need it. Chevy pairs the mill exclusively with its eight-speed auto, and itís a predictive íbox, giving you immediate torque on demand. The EPA rates this version of the Silverado at 20 mpg combined, but we achieved only 16 in daily use, the same fuel economy we measured from an all-wheel-drive 5.3-liter V-8-powered Silverado crew cab. On our 200-mile highway loop, the four-cylinder made liberal use of its turbocharger and yielded 18 mpg, 3 mpg less than that same Silverado [V8].
    God and guns keep us strong. That's what this country was founded on. - Lynyrd Skynyrd

  8. The Following 2 Users Say Thank You to gkr778 For This Useful Post:

    BlackGTP (05-27-2020),Neanderthal (05-29-2020)

  9. #5
    6.0 Liter L76 V8
    Join Date
    Jun 2016
    Posts
    2,384
    Thanks
    631
    Thanked 1,218 Times in 739 Posts
    My Ride
    2019 F150 XLT FX4 Crew Magma

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    If the CT4 is a Truck and can use a Truck Engine, is there hope that the Shelved CT6V Blackwing motor can go into a Truck?

  10. #6
    GMI Staff Member FenwickHockey65's Avatar
    Join Date
    Dec 2007
    Location
    Florida
    Posts
    20,806
    Thanks
    388
    Thanked 3,699 Times in 1,395 Posts
    My Ride
    '03 GMC Envoy/'07 Ford F-150

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    Quote Originally Posted by InCogKneeToe View Post
    If the CT4 is a Truck and can use a Truck Engine, is there hope that the Shelved CT6V Blackwing motor can go into a Truck?
    I like where your head's at.
    Hidden Content
    2003 GMC Envoy SLE
    2007 Ford F-150 XL SuperCab (State-issued)
    2014 Dodge Charger Pursuit (State-issued)

  11. #7
    3.6 Liter SIDI V6 tripowergto Jan2003's Avatar
    Join Date
    Jan 2017
    Location
    Rockin' Rowland, PA
    Posts
    1,032
    Thanks
    645
    Thanked 1,282 Times in 540 Posts

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    I love it when the V8 gets better MPG's than the tiny complex machine.
    2018 Hot Wheels 2SS Camaro Conv ~ 2016 2LT Corvette 7spd ~ 2017 Camaro RS V6 6spd ~ 2014 Chevy Volt(traded) ~ 2009 Pontiac G8 GT ~ 2002 Firebird Formula 6spd

  12. The Following 3 Users Say Thank You to tripowergto Jan2003 For This Useful Post:

    Citation84 (05-29-2020),kmacleod (05-28-2020),Neanderthal (05-29-2020)

  13. #8
    News Contributor BlackGTP's Avatar
    Join Date
    Jul 2008
    Location
    Connecticut
    Posts
    15,058
    Thanks
    6,787
    Thanked 9,314 Times in 4,560 Posts
    My Ride
    2013 Cadillac ATS - Black

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    What is GM's point in putting the 2.7 in the Silverado? Is it kind of a thumb in the eye of Ford showing turbo engines have nothing on the V8?

  14. #9
    4.4 Liter Supercharged Northstar 'Vette Dude's Avatar
    Join Date
    Sep 2008
    Posts
    2,794
    Thanks
    486
    Thanked 335 Times in 141 Posts

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    Quote Originally Posted by BlackGTP View Post
    What is GM's point in putting the 2.7 in the Silverado? Is it kind of a thumb in the eye of Ford showing turbo engines have nothing on the V8?
    Ford sells a V8 F-150 so how does that make any sense? Very confused why you brought up Ford here.

    But, to their credit, Ford has proven the real world durability and performance of turbo engines in trucks. Only in the 3.5 Ecoboost case, the turbos don't have to produce a ton of boost on the highway and therefore kill MPG.

  15. #10
    6.0 Liter L76 V8
    Join Date
    Jun 2016
    Posts
    2,384
    Thanks
    631
    Thanked 1,218 Times in 739 Posts
    My Ride
    2019 F150 XLT FX4 Crew Magma

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    Quote Originally Posted by 'Vette Dude View Post
    Ford sells a V8 F-150 so how does that make any sense? Very confused why you brought up Ford here.

    But, to their credit, Ford has proven the real world durability and performance of turbo engines in trucks. Only in the 3.5 Ecoboost case, the turbos don't have to produce a ton of boost on the highway and therefore kill MPG.
    Ford doesn't join Smaller Boosted Displacement, with DOD. (except in 1.5L Escapes)Why Both Technologies?

  16. #11
    R2-D2 Astromech Droid Premium Member mbukukanyau's Avatar
    Join Date
    Dec 2003
    Location
    Carlsbad Commiefornia
    Posts
    30,592
    Thanks
    5,325
    Thanked 7,627 Times in 3,686 Posts
    My Ride
    2013 Traverse | 2018 Fusion

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    Did Cadillac tweak the motor for more pawa?

  17. #12
    2.8 Liter Turbocharged V6
    Join Date
    Jun 2016
    Posts
    917
    Thanks
    20
    Thanked 353 Times in 224 Posts

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    You gain fuel economy from a small turbo engine with the smaller displacement, the turbocharger adds the torque back however you only get better fuel economy when the engine stays out of boost. These engines are designed to run rich in order to protect the engine from detonation, really this only works as long as the vehicle isn't too heavy for a given displacement (much like GMs DOD). At 2.7L without spooling up the turbo it has to be able to propel the heavy vehicle with a large frontal area with acceleration forces that people are us to with V-6 and V-8 truck engines. This means that you will have to get into the turbo in order to pull this off.

    For this reason even for Ford and comparing the EB V-6 engines and the 5.0 coyote the V-8 often test better when it comes to fuel economy in the real world. In other words in these trucks you have to be light footed in order to benefit from the fuel economy benefits of the small displacement turbo motors. However with the EB engine the equation is different as they not only have a 2.7L turbo V-6 engine but also a 3.5L version that packs on the torque and horsepower. In the smaller and lighter Cadillac CT4 the equation is going to be different due to the lower weight and smaller frontal area, to be honest this tactic seems like a dead end however as long as fuel economy test loops favor this tactic then automakers will take it.

  18. #13
    R2-D2 Astromech Droid Premium Member mbukukanyau's Avatar
    Join Date
    Dec 2003
    Location
    Carlsbad Commiefornia
    Posts
    30,592
    Thanks
    5,325
    Thanked 7,627 Times in 3,686 Posts
    My Ride
    2013 Traverse | 2018 Fusion

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    There is still no replacement for displacement.

  19. The Following User Says Thank You to mbukukanyau For This Useful Post:

    cadsrbest (05-29-2020)

  20. #14
    Chevrolet VOLT Premium Member
    Join Date
    Feb 2010
    Location
    The land of the hethan
    Posts
    10,925
    Thanks
    1,532
    Thanked 3,922 Times in 2,541 Posts
    My Ride
    The coffin on wheels
    Barely a third of F150s sold these days are 5.0 V8s which is kind of sad as it gets better mileage when towing than the EBs.
    Interesting that GM sells more 1500 trucks than Ford but it's refreshing to know that the 5.3 V8 is around 70% of those sales.
    Clearly buyers like different things for different reasons and no one is right or wrong as long as you get the truck you want.
    Which is leading me back to say that the 2.7T is a great engine and probably a good fit in the relatively light CT4.
    Last edited by jpd80; 05-28-2020 at 06:04 AM.

  21. The Following User Says Thank You to jpd80 For This Useful Post:

    gkr778 (05-28-2020)

  22. #15
    7.0 Liter LS7 V8 unkillsam's Avatar
    Join Date
    Aug 2006
    Location
    Philadelphia, PA
    Posts
    4,766
    Thanks
    314
    Thanked 622 Times in 322 Posts
    My Ride
    2014 Chevrolet SS PBM

    Re: Cadillacís Giant 4-Cylinder Engine Has A New Dual Volute Turbo

    Quote Originally Posted by mbukukanyau View Post
    Did Cadillac tweak the motor for more pawa?
    I think almost 100% of the difference is that it's tuned to run on 91 octane vs 87 octane.

    Just for comparison, the Ford 2.7TT V6 makes 325/400 on premium. GM did a fantastic job with this engine considering it's down 2 cylinders and a turbo, and makes slightly more horsepower and slightly less torque then the Ford.
    "The car's brilliant and ... a great surprise, pleasant surprise for all Corvette lovers everywhere ... a huge shock to our competitors ... because I don't think anybody was expecting something that good. What pleases me the most about it was that ... I can say this is the first car that's come out, that was done since I left.

    -- Bob Lutz, former vice chairman and head of global product development at GM

  23. Remove Advertisements
    GM Inside News
    Advertisements
     

Page 1 of 4 123 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBadvanced CMPS v4.1.2