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  • William Maley
    William Maley

    2020 Cadillac CT4-V and CT5-V Aren't As Powerful As Their Predecessors

      ...More Potent Versions Could Be In the Pipeline...


    At an event tonight in Detroit, Cadillac delivered a one-two punch for those craving for a bit of performance with the introduction of the 2020 CT4-V and CT5-V. On paper, the two models aren't what we were expecting. Instead of the firebreathing monsters that were the ATS-V and CTS-V, the CT4 and CT5-V are more in line with middle children of German automakers - Audi S4, BMW M340i, and Mercedes-AMG C43 and E43.

    CT4-V

    To say we're a bit surprised that Cadillac is showing off the performance variant of their upcoming entry-level sedan would be an understatement - the reveal of the standard CT4 is expected to happen in a few weeks. Aimed at the likes of the Audi S3 and Mercedes-AMG A45, the CT4-V uses a 2.7L turbo-four from the Chevrolet Silverado and GMC Sierra. It makes 320 horsepower and 369 pound-feet of torque. Power flows through a 10-speed automatic to either rear or all four wheels. No manual is available. Other mechanical bits to be aware of are four-piston brake calipers at all corners, and Magnetic Ride Control being standard on RWD models - AWD sticks with conventional shocks.

    Design-wise, the CT4-V looks like it could be mid-cycle facelift for the ATS with a similar profile. The front end mimics the larger CT5 with a wide grille and unique headlight shape. Around back, there is a boat tail effect for the trunk lid with a small lip spoiler and quad tailpipes.

    CT5-V

    Cadillac appears to be playing it quiet with the CT5-V's design. The only bits that set it apart from the standard model are the dark trim, quad-tailpipes, rear diffuser, and new wheels. Under the hood is a twin-turbo 3.0L V6 making 355 horsepower and 400 pound-feet of torque. For those keeping score, that's 20 more horsepower than the CT5 with this same engine, while torque is unchanged. Like the CT4-V, the CT5 routes power through a 10-speed automatic and either rear- or all-wheel drive. An electronically controlled limited-slip differential, Magnetic Ride Control, Performance Traction Management system, and four-piston brakes finish off the changes.

    The CT4-V and CT5-V are expected to go on sale early next year.

    Our Big Concern

    We find ourselves wondering what is Cadillac thinking? On paper, these models make more sense as V-Sport models considering what's being presented. Badging them as V dilutes hardcore image that the past few models have brought forth. Why is Cadillac doing this? Autoblog may have an answer. According to a Cadillac representative, the brand is wanting to bring in a broader set of buyers to showrooms, hence they are making them less hardcore. This will allow them to bring V versions of other models like their crossovers. But there are hardcore versions coming in the pipeline according to the rep.

    Still, we can't help but wonder if GM has done their classic move of shooting themselves in the foot.

    Source: Cadillac


    Cadillac Reveals First-Ever CT4-V and CT5-V

    • Expanded lineup adds more choices for spirited performance. Highlights include available Super Cruise, AWD, Magnetic Ride Control 4.0, eLSD and new V-Mode

    Driven by Cadillac’s latest turbocharging technology and building on more than 15 years of performance credentials, the first-ever 2020 CT4-V and CT5-V were unveiled today, expanding choices for the brand’s V-Series performance sub-brand.

    Following the 2019 CT6-V, they grow the V-Series family with even more levels of performance, while preserving the lineage established by the original V-Series lineup introduced in 2004.   

    “The new V-Series sedan lineup defines modern sophistication by combining luxury appointments with thoughtful technology and athletic refinement for the discerning enthusiast,” said Brandon Vivian, Cadillac executive chief engineer. “We are inviting even more customers into the V-Series family by adding a new level of elevated performance between our Sport models and the ultimate, high-performance track capability that the V-Series has grown to represent.”

    The first-ever CT4 and recently introduced CT5 represent Cadillac’s realigned sedan portfolio, characterized by new proportions, innovative technologies and more appearance and performance choices. Each is built on Cadillac’s award-winning rear-wheel-drive Alpha architecture, with the V-Series models developed to deliver the ultimate blend of performance, presence and road-going refinement.

    Both share the latest standard V-Series performance technologies, including Magnetic Ride Control 4.0, which is tuned specifically for V models to enhance comfort without sacrificing performance-oriented responsiveness, and drive modes that include new V-Mode personalization. Each model is available in RWD or AWD and features a 10-speed automatic transmission, Brembo front brakes with eBoost electronic assist and a limited-slip rear differential on CT4-V and electronic limited-slip differential on CT5-V.

    Cadillac’s exclusive Super Cruise1, the first true hands-free driver assistance feature for the freeway, is available on more than 130,000 miles of limited-access freeways in the U.S. and Canada. It will be available on both new V-Series models.  

    “The new lineup expands the V-Series ethos, drawing more customers into the Cadillac Performance family, and the newest Vs are focused on elevated athleticism and luxurious refinement for customers wanting a dynamic daily drive,” said Mark Reuss, GM president. “And this is only the beginning of the V family. Cadillac’s passion for performance shines on a racetrack. Stay tuned.”

    Vehicle highlights

    CT5-V — The first-ever CT5-V builds on the precision-focused details of the all-new luxury sedan introduced earlier this year to offer elevated road performance and an engaging driving experience.  

    • Powered by Cadillac’s high-output 3.0L Twin Turbo V-6 engine, which uses low-inertia turbochargers to enhance power production across the rpm band. It is rated at a Cadillac-estimated 355 horsepower (265 kW), pending SAE certification.
    • 10-speed automatic transmission.
    • Electronic limited-slip rear differential.
    • Standard RWD and available AWD.
    • V-Series performance chassis with Magnetic Ride Control 4.0.
    • Performance Traction Management.
    • Vehicle Control Mode with customizable V-Mode.
    • Brembo front braking system.
    • 19-inch wheels and summer-only performance tires2 (all-season tires available with AWD).
    • Dark exterior accents and V-Series mesh grilles; unique rear diffuser and quad exhaust tips.
    • Super Cruise1 available.
    • Unique performance persona instrument cluster and V-Mode steering wheel control.

    CT4-V — Developed for a new generation of sedan customers, the first-ever CT4 blends nimble handling and Cadillac’s signature technology. The CT4-V takes these traits further, infusing the brand’s racing DNA for a dynamic, responsive and exhilarating driving experience.   

    • Powered by Cadillac’s high-output 2.7L Turbo engine featuring a unique three-step sliding camshaft that helps optimize performance at all speeds. It is rated at a Cadillac-estimated 320 horsepower (239 kW), pending SAE certification.
    • 10-speed automatic.
    • Limited-slip rear differential.
    • V-Series performance chassis with Magnetic Ride Control 4.0 (on RWD) or ZF MVS passive dampers (on AWD).
    • Vehicle Control Mode with customizable V-Mode.
    • Brembo front braking system.
    • 18-inch wheels and summer-only performance tires2 (all-season tires available with AWD).
    • Near-perfect 50/50 weight distribution for an exceptional feeling of balance and control.
    • Dark exterior accents and V-Series mesh grilles; quad exhaust tips, unique rear spoiler design that helps reduce rear lift while increasing grip for the rear tires.
    • Super Cruise1 available.
    • Unique performance persona instrument cluster and V-Mode steering wheel control.

    MORE TO COME
    The CT4-V and CT5-V go on sale early in the 2020 calendar year, with production at GM’s Lansing Grand River facility in Michigan. Additional product information, as well as details on additional V-Series variants and CT4 Luxury, Premium Luxury and Sport models, will be announced at a later date.

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    1 hour ago, Drew Dowdell said:

    @dwightlooi - I had an off-topic question for you.  

    Why couldn't a pushrod engine or even a SOHC engine still have 4 valves per cylinder?

    Simple Answer: Yes it CAN. The Duramax 6.6 Turbodiesel in the current generation and previous generations are a Pushrod 32-valve V8.

    Complex Answer: The push-rods go from a  cam in the valley of the vee to the inner side of the cylinder heads. These obstruct where the intake passages in an OHC engine would normally be. The intake passages hence goes around the pushrods offset to the right or left of the cylinders in the space not obstructed by the rods (and their channels). There is barely enough space to serve ONE intake valve per cylinder. If you put four pushrods in an engine you'll obstruct all the approaches to the cylinder from the intake side! Doesn't do you any good to have increased valve areas if you squeeze out the intake ports and runners does it?

    So how does the diesel 6.6 do it? Well, it still has two rods per cylinder. Each operate two tandem valves using a bridge between the valves. The inner and out valves on the left are both intake and the inner and outer valves on the right are both exhaust. This is possible because the roof of the head is flat and all the valve stems are parallel, allow one rocker to open both valves via the bridge. It is meaningful because it is a DIESEL engine and it doesn't rev past the mid-3000 rpms anyway so one single intake and one sn=ingle exhaust passage is enough to not be the airflow bottleneck. Had it been a pentroof combustion chamber like that found on gasoline engines, the bridge design would be impossible and having a single passage serve two valves would have defeated the intent of using more valves to increase the airflow potential at high rpms.

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    1 hour ago, dwightlooi said:

    Simple Answer: Yes it CAN. The Duramax 6.6 Turbodiesel in the current generation and previous generations are a Pushrod 32-valve V8.

    Complex Answer: The push-rods go from a  cam in the valley of the vee to the inner side of the cylinder heads. These obstruct where the intake passages in an OHC engine would normally be. The intake passages hence goes around the pushrods offset to the right or left of the cylinders in the space not obstructed by the rods (and their channels). There is barely enough space to serve ONE intake valve per cylinder. If you put four pushrods in an engine you'll obstruct all the approaches to the cylinder from the intake side! Doesn't do you any good to have increased valve areas if you squeeze out the intake ports and runners does it?

    So how does the diesel 6.6 do it? Well, it still has two rods per cylinder. Each operate two tandem valves using a bridge between the valves. The inner and out valves on the left are both intake and the inner and outer valves on the right are both exhaust. This is possible because the roof of the head is flat and all the valve stems are parallel, allow one rocker to open both valves via the bridge. It is meaningful because it is a DIESEL engine and it doesn't rev past the mid-3000 rpms anyway so one single intake and one sn=ingle exhaust passage is enough to not be the airflow bottleneck. Had it been a pentroof combustion chamber like that found on gasoline engines, the bridge design would be impossible and having a single passage serve two valves would have defeated the intent of using more valves to increase the airflow potential at high rpms.

    Thanks for the explanation.  In my head I was thinking about the design you described for the diesel, but I forgot that valves are at an angle in gasoline engines. 

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    Another way around the pushrod/runner territorial fight is canted rockers. Old Chrysler hemis have valves perpendicular to the crank rather than parallel- they used dual rocker shafts & canted rockers. Still only 2-valve of course.

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    20 minutes ago, balthazar said:

    Another way around the pushrod/runner territorial fight is canted rockers. Old Chrysler hemis have valves perpendicular to the crank rather than parallel- they used dual rocker shafts & canted rockers. Still only 2-valve of course.

    Actually, no. Not really. You cannot have four push rods per cylinder and still have room for the intake runner to reach both intake valves. The Chrysler Hemi design simply allow for the intake and exhaust valves to be opposed instead of side-by-side. The purpose of that being the theory that two opposed valves and a hemispherical combustion chamber is more knock resistant and hence capable of higher compression and output than the heart shaped combustion chamber with side-by-side valves. However, with the current generation of Hemi vs non-Hemi V8 engines, this theory does not seem to yield real world performance superiority.

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    9 minutes ago, dwightlooi said:

    Actually, no. Not really. You cannot have four push rods per cylinder and still have room for the intake runner to reach both intake valves. The Chrysler Hemi design simply allow for the intake and exhaust valves to be opposed instead of side-by-side. The purpose of that being the theory that two opposed valves and a hemispherical combustion chamber is more knock resistant and hence capable of higher compression and output than the heart shaped combustion chamber with side-by-side valves. However, with the current generation of Hemi vs non-Hemi V8 engines, this theory does not seem to yield real world performance superiority.

    I thought the current generation of Hemis were Hemi-in-name-only and didn't actually have a hemispherical combustion chamber.

    They also have 2 spark plugs per cylinder, so putting more valves in there would be challenging. 

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    Valve placement in a true hemi head (parallel or perpendicular) may not be that crucial for airflow/combustion, but the perpendicular placement was to accommodate the splayed valve stems, making the old hemi heads incredibly wide. They would not have fit set parallel to the crank. 

    A similar bridge arrangement could also work with 2 pushrods and 4 valves, tho the result may become physically cumbersome. It would require something not already engineered (to my knowledge).

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    4 hours ago, balthazar said:

    Valve placement in a true hemi head (parallel or perpendicular) may not be that crucial for airflow/combustion, but the perpendicular placement was to accommodate the splayed valve stems, making the old hemi heads incredibly wide. They would not have fit set parallel to the crank. 

    A similar bridge arrangement could also work with 2 pushrods and 4 valves, tho the result may become physically cumbersome. It would require something not already engineered (to my knowledge).

    Splayed or not, one rocket actuating one valve is no problem regardless of how the valves are oriented. But if you use a bridge to open both valves, they have to be parallel and the rod/rocket has to be perpendicular to the bridge. Otherwise as the rocker depresses it'll skew to one side of the bridge and open one valve more than the other -- like stepping on one side of a see-saw.

    The Hemi head is generally taken to mean ANY two valve head design where the intake valve is on one side and the exhaust valve is on the other side. This is irrespective of whether the roof is actually a dome or more of an oval. All the modern ones are oval allowing the flat decks on the sides to form a squish deck with the top of the piston to allow higher compression ratios.

    Twin sparks are very common with two valve and three valve designs -- OHC or Pushrod. If you want a REALLY HISTORIC example, go Google Junkers-Jumo 213A. That is a Supercharged 35 liter SOHC 36v inverted V12 cylinder engine used in the late WWII Focke-Wulf 190-D9 fighter -- it features three valves per cylinder, twin sparks and Bosch Direct Gasoline injection to generate 1,750hp @ 3,250 rpm (2,100 hp with 50% Methanol-Water injection in emergencies).

    Edited by dwightlooi
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    (1) Valve and spark arrangement in modern Hemi pushrod cylinder head.

    (2) Flat Deck 6.6 Duramax turbo-diesel pushrod cylinder head.

    (3) Rocker and bridge arrangement on 6.6 Duramax turbo-diesel engine

    (4) Junkers-Jumo 213A engine showing off -- Direct Injection, Twin Spark, 2-intake / 1-exhaust valves per cylinder and a variable drive ratio supercharger (hydraulically coupled)

    hemi.jpg

    stage_0_performance_heads_1_1_1_1_2.jpg

    SAP1008_PROD-33_rev.jpg

    736cd2ba6f48374ea97b3403c7787260.jpg

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    5 hours ago, ccap41 said:

    There was ONE thing people REALLY harped on and they only made it worse... frustrated ugh GIF by Equipe de France de Football

    True and your right it is worse now, but ignoring that ugly mark, I do still like the over all station wagon vibe.

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    5 hours ago, Potluck said:

    That wagon is sharp with the escalade tail lights, but we all know that Cadillac styling has moved on from the purely vertical blades these days. 

    Cadillac is lost on styling. Their new stuff looks "Mazda Inspired". But, they have also shown a lot of inconsistencies and indecision, hence who knows if the next vehicle will go back to the previous gen cues, stay the course or go in a totally new direction.

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    51 minutes ago, dwightlooi said:

    Cadillac is lost on styling. Their new stuff looks "Mazda Inspired". But, they have also shown a lot of inconsistencies and indecision, hence who knows if the next vehicle will go back to the previous gen cues, stay the course or go in a totally new direction.

    They haven't kept a President very long lately either. 

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