LZH

any prep...

tommy25000

200mph?! im gonna have to throw a HUGE

Zod

just curios, what do u base ur BS on?
as a few mags have stated that the 55k hit/can hit 200mph delimited

oldgixxer

Very simple.Once speeds reach 185mph or so the horsepower required to go another 2-3mph above and beyond that increases dramatically.You would need ALOT more horsepower over stock to come close to 200mph,not even taking into consideration the aerodynamic limitations of a stock chassis W211.
There was a great article in one of the major auto mags this summer that took a Viper,a Z06&a Porsche 911RS3,a Lambo(and maybe one more I cant recall)they put Danica Patrick behind the wheel on a closed course to debunk the top speed claims the manufactures advertised for these vehicles.The Z06 was nowhere near the 198mph speed Chevy claimed as well as the top speeds claimed for the Viper&Porsche.
Also worth noting is the inaccuracy of the speedometer at speeds above 170mph.Just because the speedo says it doesnt mean that's how fast the car is moving.
I've done a lot of top-end racing albeit on motorcycles and it takes a HUGE amount of power over stock(even the mighty Hayabusa needs 50more hp to get there&this bike will hit 185mph stock)to break that magical 200mph mark

jangy

I disagree on the ability to get there. I think a delimited car can, I just don't think that anyone does it, simply because of the amount of open road needed.

oldgixxer

Show me one G.P.S. verified run of any de-limited E55 going 200mph& I will eat my words.
If a stock SLR couldn't break 200,how can a de-limited E55 do it with 120+less horsepower&none of the aerodynamic advantages of the SLR?

Yacht Master

The original posters claim was, 200 mph in an EVO-tuned E 63.
Adam any word here?
Aerodynamically speaking oldgixxer is correct, Aero drag increases by the cube-root, and we all know the linear power dose not.

One way to do this is to put a 2006 speedo dial (0-200) on a 2004 speedometer.

vrus

I laugh everytime I see this 200mph mentioned... People dont realize how much horsepower it takes to hit those speeds or what kind of car it takes to do that.

There was some talk of this 200mph in the SL55 forum as well where people said they read it in a magazine that a delimited SL55 hit 200mph... And that one of Veloce's customers with his delimited ECU tuning went over 200mph.

Sorry.. I dont buy any of it. Aside from the fact that the math doesnt work on our cars, 500hp on a 4500lb car isnt going to cut it to break 200mph.

Then there is the whole requirement of clear, uninterrupted road...

Here is the equivalent thread on the SL55 side: https://mbworld.org/forums/sl55-amg-sl63-amg-sl65-amg-r230/226346-veloce-performance-announces-suspension-lowering.html

--------------------------------------------

Sean03S55,

I'd love to know what road you found up here in Toronto where you could barrel the car up to 200mph. I wouldn't mind having access to it so I can do my high speed testing for my stuff.

tommy25000

Can, maybe, maybe not. I just really doubt this dude just went out and pulled off a couple 200mph runs. I just don't see it. I will gladly eat all my words if I am proven wrong.

yeahdickey

So what is the higest speed reached on the e55 stock (delimited of course)??

jangy

168 for me, but I've only had my limits raised of late

Jon2007E63P30

I am willing to accept 200mph.

3rd paragraph
http://www.evo.co.uk/carreviews/evoc...z_e63_amg.html

4th paragraph
http://www.public.iastate.edu/~tbeadle/E63vsM5.htm

end of 3rd paragraph
http://www.verdictoncars.com/jsp/voc...20AMG%20saloon

But. On a public highway?

DirtyVegasMB

Yeah... I read that article, but there also was a limited space for her to attempt the top speed. Many roads go further than the track to help the vehicle climb up in speed.

DirtyVegasMB

What about that M6 hitting over 200 mph?

http://www.youtube.com/watch?v=y7jInMxUaVQ

I read that even with all the mods that the M6 gets to hit that speed it only produced around 420+ at the wheel. I realize they have the gearing advantage, but an E55 with 500hp or more... still not possible?

MB_Forever

Although 200 mph would probably be possible, I think in reality, it would be a very very very difficult speed to reach in any practical manner. The speedometer would increase very slowly after 180 mph and accordingly, you would need a very long stretch of straight road to do it

oldgixxer

I found the magazine&re-read the article,you are correct.But while digging for that particular mag I found another with the info I was trying to convey here.
It says:...........

"Bear in mind that it takes gobs of horsepower to reach 200mph.The air resistance grows with the square of speed.Stick your hand out the side window of your car at 60mph&feel the resistance.At 180mph,the force will be nine times stronger should you be foolish enough to give it a try.And at 200mph it will have 11 times the force.Whats more,because the POWER REQUIREMENT OF A CAR GROWS WITH THE CUBE OF SPEED,THIS MEANS IT WILL NEED 37 TIMES MORE POWER TO GO 200MPH THAN TO MAINTAIN 60mph"

Apparently derestricted SL55's bang out 200mph+ all day long,so those of you who have new 997tt's,as well as Z06's have a reason to be nervous if your under the impression that your 11sec cars can stomp otherwise stock4500lb 12.5 sec SL55's

oldgixxer

I read your links;the first link is pure speculation by the author.The other links pretty much say the same;there is NO documented/digitally/mechanically/electronically measured verification so I would have to say B.S.

I may very well be speaking for myself here(although there are a few gear-heads on this forum that stand besides me on this subject)but,after being highly involved in dragracing/streetracing since 1989 I have seen/heard all sorts of ridiculous claims.The skeptic in me comes out when I hear wild bravado such as "my bone stock 4200lb+car,with an ECU flash will do 200mph).
Everyone loves to think there hi performance car is faster/better then the OTHER hi performance fast cars out there.

One last thought: Brabus Rocket.How much money/work did it take to achieve that speed???????????More then an derestriction

RoydRage

I agree with oldgixxer...

I have raced professionally, and have been building motors, and racing since I was 16. I know what it takes to do the double ton.

I see it as "Highly doubtful" that my car that is unrestricted & has some mods could do 200mph, even with a Pulley! Vrus was saying 200 would be well above the gearing on the car, and that you would have to exceed redline by a considerable amount.

I haven't done the math, but see no reason to doubt it.

I have been saying this for over 6 months here, but I guess people believe what they want to believe.

Bear in mind that magazines exaggerate always! To create hype, and speedometers are inaccurate especially at those speeds.

When someone takes one of these cars through certified speed traps @ 200, and I SEE IT, then I'll believe it.

Best,

RoydRage

oldgixxer

Answer yer friggin phone one of these days

Jon2007E63P30

Someone dig up the frontal area of the car and the Cd. I will find the equation and calculate.

I wonder how much the Mercedes symbol sticking up off the hood increases drag

RoydRage

Sorry Buddy!

I didn't recognize the # so that's why no call back... No disrespect intended!

You're in my Contacts now so your Name will come up!

Best,

RoydRage

regor60

assuming 500hp available, drag area of 7 sq ft (had to use the S550's), maximum speed is 215 mph before aerodynamic drag force overcomes engine. Mass of the vehicle has nothing to do with the ultimate speed, only with how long it takes to get there. Since 200 mph is over 90% of the theoretical, looks like it'd be touch and go

Yacht Master

Give this a try

18.3 sq ft
.36 cd
420 hp.

regor60

211 mph. good point on the 420. I thought the Cd was .27 but the drag area makes sense at 6.6 vs the S550's

oldgixxer

Agreed,however: if the air resistance/friction were the same for both cars at any given speed, the top speeds of both cars would be the same. It would be reached when the force provided by the engine is equal to the opposite force from the drag and friction effects.A heavier car has more friction placed upon it's tires.This rolling resistance does come into play,although I cannot say as to how much.