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Registered 2018 SLC43
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Discussion Starter #1
A know-it-all friend and MB/BMW buff keeps pooh-poohing the SLC 43 engine. He keeps saying it's the "same engine" as some other biturbo used in an older model SUV that did not have much more power than the regular engine, approx. 330 HP, yet cost about $10,000 more. That engine existed, I remember it. I've told him the SLC 43 has 362 HP to no avail for two months now, still brings that up. SO - is there an engine number for what he's thinking of and an SLC 43 engine number? They may be similar, but probably do have different official numbers or other designation I can use to stop him from saying that. Not a biggie but will save some aggravation. Thanks!
 

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Administrator 2009 SLK 55 AMG/Founding member 2006
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Registered 2018 SLC43
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Discussion Starter #3
If the "engine number" is the same, maybe some significant differences would be helpful. I'm new to MB, so does the engine number refer to the block or whut? Please pardon my iggorance.
 

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Registered 2018 SLC43
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Discussion Starter #5
The DELA 35 @ 333 HP is probably what he was thinking of - I remember circa 330 HP. At the time, for another $10,000 or so, you only got about 20 more HP than the next model down - not a good buy. He called that engine "a dog" and no matter how many times I tell him, he still thinks the SLC 43 has 333 HP.

So what makes the SLC 43's engine different? Just tuning and add-ons? I guess he's right, it is the same basic engine, but yet another variant. Oh, well...

I test drove one, will comment when I have some time. I was really expecting more straight-line acceleration difference between it and my old 2012 SLK 350 - the old gal is still a stepper. Certainly nice, though. Transmission is a VERY noticeable step up, for openers. Thanks!
 

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Premium Member 2012 SLK350
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The DELA 35 @ 333 HP is probably what he was thinking of - I remember circa 330 HP. At the time, for another $10,000 or so, you only got about 20 more HP than the next model down - not a good buy. He called that engine "a dog" and no matter how many times I tell him, he still thinks the SLC 43 has 333 HP.

So what makes the SLC 43's engine different? Just tuning and add-ons? I guess he's right, it is the same basic engine, but yet another variant. Oh, well...

I test drove one, will comment when I have some time. I was really expecting more straight-line acceleration difference between it and my old 2012 SLK 350 - the old gal is still a stepper. Certainly nice, though. Transmission is a VERY noticeable step up, for openers. Thanks!
Note that the R172 original 3.5 L V6 engine is a M276 engine.
Non-turbo charged though.
 

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My MB AMG Tech tells me that the new biturbo V6 is a completely new engine design with the turbos engineered into the engine cast and not turbo "strap on's" 😈 That sounds like a major difference. But I just drive em! BobbyM


ps...no worries Sarg about the engine numbers.
 

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Registered 2018 SLC43
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Discussion Starter #9
My MB AMG Tech tells me that the new biturbo V6 is a completely new engine design with the turbos engineered into the engine cast and not turbo "strap on's" 😈 That sounds like a major difference. But I just drive em! BobbyM
That settles that! Case closed. Thanks. Victory is mine.

On another point you can definitely help with, I noticed a lot of turbo lag. A little slow out of the hole compared to my SLK 350 (and my other car, also a twin turbo), it seemed, but I'm trying again Friday. My car will often squeal the tires without even trying, and it has the electronic rear end, unlike the 43 I drove. Try as I may, I couldn't get any scratch like in the videos - not even in a turn from a full stop in Sport 2. Is yours that way? How does yours compare to your old SLK off the line? My friend blamed traction control but that's BS as we know. Traction control would allow constant acceleration, not slow the car at first. I'll miss the holeshot, but of course it quickly makes up for it. Not a deal breaker.

Another point: when I test drove my 350 (w/electronic rear end) a year ago, I got the tail out twice without even trying - fun! Big selling point! I couldn't get the tail out on the 43 (w/o P30 option) even when I tried. Wassup? I'm thinking simple turbo lag.

Talking turkey on Friday. A local dealer is later having an "AMG GT R Launch Event." Free food and drink! Sorry for rambling.
 

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Premium Member 2013 SLK55 AMG
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That settles that! Case closed. Thanks. Victory is mine.

On another point you can definitely help with, I noticed a lot of turbo lag. A little slow out of the hole compared to my SLK 350 (and my other car, also a twin turbo), it seemed, but I'm trying again Friday. My car will often squeal the tires without even trying, and it has the electronic rear end, unlike the 43 I drove. Try as I may, I couldn't get any scratch like in the videos - not even in a turn from a full stop in Sport 2. Is yours that way? How does yours compare to your old SLK off the line? My friend blamed traction control but that's BS as we know. Traction control would allow constant acceleration, not slow the car at first. I'll miss the holeshot, but of course it quickly makes up for it. Not a deal breaker.

Another point: when I test drove my 350 (w/electronic rear end) a year ago, I got the tail out twice without even trying - fun! Big selling point! I couldn't get the tail out on the 43 (w/o P30 option) even when I tried. Wassup? I'm thinking simple turbo lag.

Talking turkey on Friday. A local dealer is later having an "AMG GT R Launch Event." Free food and drink! Sorry for rambling.
Strange....when I test drove the SLC43 for a weekend I thought it was clearly quicker than the 350.....tho didn't try to spin the wheels....
TonyS
 

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Registered 2018 SLC43
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Discussion Starter #11
Strange....when I test drove the SLC43 for a weekend I thought it was clearly quicker than the 350.....tho didn't try to spin the wheels....
TonyS
It's clearly quicker, but mostly after the first 50-100 feet. I did some more romps in my 350 and will do some more low end comparisons, probably tomorrow. The published numbers show it to be about 0.8 sec faster 0-60. That's plenty.
 

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Your friend is probably talking about the GL450 BlueEFFICIENCY which is a really slow SUV (and shares the same base engine). The SLC 43 also shares an engine with the GLE 450 SUV and C450 Sedan (going to be renamed C43 coming year).
It also shares the series 'name' with the C43 from the late 90s (which only had 302 hp).
 

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Registered 2018 SLC43
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Discussion Starter #13
Went for another ride late today. I let the salesman drive so I would not anticipate the acceleration. By revving it up to 1800 in gear with the brake on, we got some low gear scratch, then all hell broke loose in about 100 ft. Nice. I think you feel it more as passenger. LOVE the sounds.

Found out the display has all kinds of modes like additional gauges and lateral g's and such. Vast improvement, really modern. Pointed out other features not on the web site as well. Funny they don't promote all that. Picked up a brochure but haven't looked at it yet. Dallas MBCA picnic tomorrow so I'll check it out out later.

Add it all up and looks like a go, foolish as it might be. Depends on price and trade-in, I guess.
 

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That settles that! Case closed. Thanks. Victory is mine.

On another point you can definitely help with, I noticed a lot of turbo lag. A little slow out of the hole compared to my SLK 350 (and my other car, also a twin turbo), it seemed, but I'm trying again Friday. My car will often squeal the tires without even trying, and it has the electronic rear end, unlike the 43 I drove. Try as I may, I couldn't get any scratch like in the videos - not even in a turn from a full stop in Sport 2. Is yours that way? How does yours compare to your old SLK off the line? My friend blamed traction control but that's BS as we know. Traction control would allow constant acceleration, not slow the car at first. I'll miss the holeshot, but of course it quickly makes up for it. Not a deal breaker.

Another point: when I test drove my 350 (w/electronic rear end) a year ago, I got the tail out twice without even trying - fun! Big selling point! I couldn't get the tail out on the 43 (w/o P30 option) even when I tried. Wassup? I'm thinking simple turbo lag.

Talking turkey on Friday. A local dealer is later having an "AMG GT R Launch Event." Free food and drink! Sorry for rambling.

Hi SLKOmatic

Glad to hear in your latest post that you may be taking the SLC 43 AMG plung! My apologies for just getting to your previous ask.

Of course everyone's driving experience is personal. After going into now my 3rd week of SLC 43 driving I have not experienced any turbo lag. In fact, if those BiTurbo badges weren't blasted to the side of the car and I had no pre-knowledge of a couple of turbos under the hood, I would never know the car has a turbo engine, except that the car is FAST! The SLC 43 is extremely fast at the line in Sport mode and probably faster off the line than my former V8 SLK 55 w/415hp. (lighter helps at the line & I'm sure the 384ft lb torque/limited Slp Dif helps too) The V8 would eventually leave me eating "55 Dust" but the SLC 43 is crazy fast. No lag, no turbo whistle (the whistle that you often hear from BMW turbo's), just fast!

I am getting to know the Sport+ mode a bit better. Whoever programmed Sport+ in the SLC 43 is a got to be an engineering Mad Scientist! Sport+ is fun, unruly...mind of it's own, best for motocross driving IMHO. I had my most fun the other day in Sport+ using the manual shift paddles. Very responsive and I
was able to shift the gears in Sport+ when I felt it was right and not the Mad Scientist. (miss my 05/06 6-spd stick).

Good luck with wheeling and dealing on the SLC 43 AMG you have picked out. We all want to see pix!

kind regards,

bobbyM >:D
 

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Registered 2018 SLC43
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Discussion Starter #15
Good luck with wheeling and dealing on the SLC 43 AMG you have picked out. We all want to see pix!

kind regards,

bobbyM >:D
Thanks for the info. Sure felt like turbo lag to me, as it had a feel-able increase in acceleration some yards in unlike my 350. But not a deal breaker.

I'm wondering how some of the reviews showed smoking tires. ESP off, Photoshop, or poor infrastructure? :) Could not reproduce. Guess I was expecting billowing smoke like my old Shelby did even from a rolling start.

On another point, I though I'd stump the salesman on the "magnetic damping" option, but he was up on it. But, according to the description in his ordering guide, that refers to motor mounts, not the suspension. Gave a long explanation I didn't really buy, so I'm not considering that, saved $2000.
 

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Would totally agree about sport+ mode - the car is much faster. Mate has a 1/4 mile straight drive and we did runs in standard 'Comfort' mode and 'Sports+' reckon there was 20 mph difference between the 2, although, without the ABS working in Sports+ mode, I was a little more careful. The sound is also magnificent. Being a turbo driver all my life, rather than a V8 boy, I didn't notice any lag. If you lift, when running hard, you can hear the turbos winding down ever so slightly, but they spin up again fast.
 
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