New Merc AMG: 2.0L, 26 psi, 355 hp - Miata Turbo Forum - Boost cars, acquire cats.

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Old 04-04-2013, 12:44 AM   #1
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Default New Merc AMG: 2.0L, 26 psi, 355 hp

I wonder what its torque curve will look like.

Winding Road | Review: Mercedes-Benz CLA45 AMG
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Old 04-04-2013, 12:45 AM   #2
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A luxurious evo? Nice
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Old 04-04-2013, 01:28 AM   #3
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Kinda sexy..



Gets no love from me, no manual gearbox.
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Old 04-04-2013, 10:24 AM   #4
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Even if I'll never even think about buying one, more 4-cylinder turbos are always a good thing.

More factory turbos = more turbo R&D = better turbos. Everybody wins!
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Old 04-04-2013, 11:24 AM   #5
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Only available with 2 pedals and it spends most of its life in front-wheel drive?

Quote:
Originally Posted by Mercedes press release
Torque split is fully variable: in normal driving, the CLA45 AMG has front-wheel drive bias in the interests of optimum efficiency. If the driving dynamics require, the variable AMG 4MATIC all-wheel drive splits the torque between front and rear axle at a ratio of up to 50 : 50 percent. The variables influencing the torque split ratio are vehicle speed, lateral and longitudinal acceleration, steering angle, speed difference between the individual wheels, selected gear and accelerator position.
I'll pass.

I am curious to see how the power delivery is with that much HP and torques and only 2.0L.
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Old 04-04-2013, 12:08 PM   #6
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Torque curve will be the following: 4000rpm - noneofit / 4500rpm - allofit
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Old 04-04-2013, 12:15 PM   #7
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Well if they're running 26psi that suggests the turbo isn't going to be all that big. And since its a benz I'd be surprised if it wasn't something twin scroll. So there is hope for it yet.

But its still a 50+k sedan. Most of us can't afford it lol. Who cares
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Old 04-04-2013, 12:57 PM   #8
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It is twin scroll according to the press release.

2.0L + twin scroll + EFR-like turbo = winning. I'm thinking it's probably 6258-sized if it's making [email protected]
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Old 04-04-2013, 01:19 PM   #9
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Quote:
Originally Posted by thenuge26 View Post
It is twin scroll according to the press release.

2.0L + twin scroll + EFR-like turbo = winning. I'm thinking it's probably 6258-sized if it's making [email protected]
Probably much smaller. Remember this is a larger engine with a head that flows much better than ours and you can make that much at the wheels with a 6258 on our engines at 26psi.
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Old 04-04-2013, 01:21 PM   #10
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Yeah but take into account all the OEM intake/exhaust parts choking it down.

Or so I'm guessing.
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Old 04-04-2013, 01:29 PM   #11
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Good point. I did not even think about that aspect.
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Old 04-04-2013, 02:03 PM   #12
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Quote:
Originally Posted by elesjuan View Post
Gets no love from me, no manual gearbox.
PDK and DCT > three pedals.

All day everyday.
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Old 04-04-2013, 02:12 PM   #13
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Quote:
Originally Posted by z31maniac View Post
PDK and DCT > three pedals.

All day (Except for the hours of 7 AM to 10 AM, and 4 PM to 7 PM) everyday (Except for days that end in Y).
FTFY

But seriously. On the track? Awesome. On a long windy road? Awesome. Doing 3 MPH on the freeway in bumper to bumper traffic?
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Old 04-04-2013, 02:17 PM   #14
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you'd rather have a manual in 3mph bumper-to-bumper?
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Old 04-04-2013, 02:27 PM   #15
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Quote:
Originally Posted by TheScaryOne View Post
FTFY

But seriously. On the track? Awesome. On a long windy road? Awesome. Doing 3 MPH on the freeway in bumper to bumper traffic?
pretty sure you misread his statement.....
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Old 04-04-2013, 02:31 PM   #16
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Objectively and from a purely rational perspective, I can't argue that a PDK is superior to a 3-pedal gearbox on a racetrack. However, a car like the AMG CLA (or my M3) is going to spend somewhere between 0% and 1% of its lifetime on a racetrack. My preference will always be a 3-pedal gearbox for subjective reasons.


After all, car purchases and ownership are almost never purely rational and objective or we would all be driving Pontiac Vibes and Honda Fits.
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Old 04-04-2013, 02:35 PM   #17
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Quote:
Originally Posted by Scrappy Jack View Post
After all, car purchases and ownership are almost never purely rational and objective or we would all be driving Pontiac Vibes and Honda Fits.
While I agree with the bolded part I do not necessarily agree with the second part. I think accounting for how much fun your car will be and how much it will make you smile is perfectly rational and objective. Happiness is the ultimate utility and should be considered in respect to every decision we make. However, you need to consider not just immediate satisfaction but the satisfaction over the entire life of the purchase/decision.
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Old 04-04-2013, 02:36 PM   #18
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Quote:
Originally Posted by TheScaryOne View Post
FTFY

But seriously. On the track? Awesome. On a long windy road? Awesome. Doing 3 MPH on the freeway in bumper to bumper traffic?
Quote:
Originally Posted by Braineack View Post
you'd rather have a manual in 3mph bumper-to-bumper?
Hahaha, perfect.

Quote:
Originally Posted by Ryan_G View Post
pretty sure you misread his statement.....
It appears that way.

Quote:
Originally Posted by Scrappy Jack View Post
Objectively and from a purely rational perspective, I can't argue that a PDK is superior to a 3-pedal gearbox on a racetrack. However, a car like the AMG CLA (or my M3) is going to spend somewhere between 0% and 1% of its lifetime on a racetrack. My preference will always be a 3-pedal gearbox for subjective reasons.


After all, car purchases and ownership are almost never purely rational and objective or we would all be driving Pontiac Vibes and Honda Fits.
I don't know, I got to spend quite a bit of time driving my buddies '10 M3 with the DCT box..........I thought it was fantastic. If I were in the market to drop that kind of coin, even on a car that would be 99% DD, I'd still go for the DCT.
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Old 04-04-2013, 02:46 PM   #19
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Probably much smaller. Remember this is a larger engine with a head that flows much better than ours and you can make that much at the wheels with a 6258 on our engines at 26psi.
Remember, a turbo doesn't know what size an engine is. It only cares about flow and pressure ratio. 26 psi means a very high pressure ratio. The higher the pressure ratio, the later a turbo tends to make full boost.

I want to see the RPM it makes 80% of max torque.
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Old 04-04-2013, 02:51 PM   #20
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Quote:
Originally Posted by JasonC SBB View Post
Remember, a turbo doesn't know what size an engine is. It only cares about flow and pressure ratio. 26 psi means a very high pressure ratio. The higher the pressure ratio, the later a turbo tends to make full boost.

I want to see the RPM it makes 80% of max torque.
I understand that but a larger engine that is atleast of the same efficeincy of a smaller engine will make more power at the same psi on an identical turbo. That was my point.
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