b55 upgrade - Mercedes Benz SLK Forum

AMGs For those high performance Mercedes-Benz R170-SLK 32/R171-SLK 55/R172-SLK 55 cars tuned by AMG -

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#1 Old 08-28-2007
 
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b55 upgrade

Hi guys,

I just visited the newly open CEC tuning center in Coral Gables, Florida and spoke to Frank about doing some tuning for my 06 slk 55. He said that the two choices they had was to ge the 6.1 engine swap for a mere $46,000 or do the B55 upgrade. He called the California center and we spoke to a guy named Andrea. He said that it was a no brainer to get the B55 upgrade and that the difference would be noticeable right away as the horsepower would be increased to 400 and that they would also reflash the computer to increase top speed. If anyone outhere has had this upgrade done I would love to hear from you and get any input possible!!!

Thanks!!!
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#2 Old 08-28-2007
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PM B55 or hopefully he will chime in.

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#3 Old 08-28-2007
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Power to the people. Too rich for my taste. My SLK 55 has enough get up and go, stock. Good for those that want more.
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#4 Old 08-28-2007
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I went my own way with the mods but go for the B55kit if you wish.
Brabus is a well known reputable tuner and doesnt affect the warranty if I am not mistaken.

06 SLK55 AMG (Kleemann K2)
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#5 Old 08-28-2007
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B55 is your man, he has the exact same kit.

I got the 6.1 on mine but thats purely because it left the door open for other engine modifications i had carried out whereas the B55 is essentially redundant if you where to get a S/C installed down the line for instance.

If you plan on leaving the engine alone after this then B55 all the way
#6 Old 08-29-2007
 
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B55 upgrade

I was not going to do the $46000 engine swap. That's too much money for me and honestly speaking, it would get me kicked out of my house. Andrea from the CEC tuning center in California suggested the B55 upgrade for $7000. He stated that I would notice the difference in sound, acceleration and top speed right away for a fraction of the price. I sent a PM to B55 but unfortunately , he has not gotten back to me. Hopefully I will hear from him. Thank you all for your thoughts and opinions, they are much appreciated
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#7 Old 08-29-2007
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Sorry if I missed it... What is the list of things you get for the B55 @ $7000 besides the ECU reflash?

Do they dyno before/after to show the 400hp?
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#8 Old 08-29-2007
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#9 Old 08-29-2007
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I know Brabus is good stuff, but wouldn't you get to the same 390HP with shorty headers, greens, and an ECU upgrade without the cam work and exhaust mods?

I think that kit is for the 55 motor family- the doc shows 10:1 compression and the 55 we have is 11:1, right?
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Originally Posted by webslinger View Post
I know Brabus is good stuff, but wouldn't you get to the same 390HP with shorty headers, greens, and an ECU upgrade without the cam work and exhaust mods?

I think that kit is for the 55 motor family- the doc shows 10:1 compression and the 55 we have is 11:1, right?
To be honest to you I'm not too familiar with engine upgrades and I do not know if these upgrades that you're talking about (shorty headres, greens and an ECU upgrade) I could do them myself. My other concern is doing something that will void the manufacturer warranty. I spoke to aservice advisor at mercedes and he tols me that the B55 upgarde is OK by mercedes and will not void my warranty so that is a big plus for me. Regarding the compression, I have no clue. I do appreciate your input and would like to Thank you for your information
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#11 Old 08-29-2007
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I agree the warranty is important and I'd be into that too. I was just looking at what you're getting for the money and what they are claiming on what looks like a generic (older) document.

IF MB is cool with the work, it's probably worth some extra coin vs some speed shop sticking stuff on and you cross your fingers each time you go to the dealer.
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Pardon my ignorance. Does anybody know how many miles per hour is 285 km
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#13 Old 08-29-2007
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A couple things, the main modification for the B55 is a new set of cams, lifters, springs etc that changes the compression ratio.

285 kph = 177 mph

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#14 Old 08-29-2007
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Honestly guys you can get more than 390 for less money.

Say $2k for headers and about the same for a good set of cam's Kleemann are good here by the way.

That should give you about 400 horsepower possibly even more, so thats $4k spent then talking very easy figures here say 1k for the install of the parts.

That leaves you 2k either to keep or for other mod's.

About the warranty you guys are all in the US so you need not worry about it slk55amg13 and Doug because you are protected by law so if you take the car in because the roof is faulty they can't refuse to fix it because you have a modded engine and all good tuners have a like-4-like warranty so no need for concern at all.

With Brabus your paying for a name remember now thats not to say they are no good because they are amazing at what they do they really really are but you can get more power for less dough.

And slk55amg13 your in Fla so i believe C2D are the people to speak to about the mods they are not things you can do yourself really without technical skill but these guys are real good not some back street outfit.
#15 Old 08-29-2007
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Quote:
Originally Posted by Tslick View Post
A couple things, the main modification for the B55 is a new set of cams, lifters, springs etc that changes the compression ratio.
Actually those do not affect compression ratio, which simply is the ratio between volume of the cylinder when the piston is at the bottom of the stroke compared to the volume when it's at the top of the stroke. Only by physically changing the piston, cylinder bore/stroke, or altering the combustion chamber itself, will the compression ratio change.

Cams, lifters, springs, will of course affect air/fuel flow into and out of the combustion chamber, but have no effect on it's compression ratio.
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#16 Old 08-29-2007
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Your talking static compression ratio (bottom dead center).

Gas engines have dynamic compression ratio that is determined by the cam.

In simple terms, depending on the cam lobe, you change the effective length of the stroke by closing the valves and detonate before bottom dead center.

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#17 Old 08-29-2007
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...you can also alter duration of how long the intake valve stays open- and get more air/fuel in, giving you more ooomph per bang.

(that's the technical desc.) :-)
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Originally Posted by DansSlk View Post
Honestly guys you can get more than 390 for less money.

Say $2k for headers and about the same for a good set of cam's Kleemann are good here by the way.

That should give you about 400 horsepower possibly even more, so thats $4k spent then talking very easy figures here say 1k for the install of the parts.

That leaves you 2k either to keep or for other mod's.

About the warranty you guys are all in the US so you need not worry about it slk55amg13 and Doug because you are protected by law so if you take the car in because the roof is faulty they can't refuse to fix it because you have a modded engine and all good tuners have a like-4-like warranty so no need for concern at all.

With Brabus your paying for a name remember now thats not to say they are no good because they are amazing at what they do they really really are but you can get more power for less dough.

And slk55amg13 your in Fla so i believe C2D are the people to speak to about the mods they are not things you can do yourself really without technical skill but these guys are real good not some back street outfit.
Thanks abunch for the info. Where can I find these C2D people you're talking about??? I live in Miami, Florida
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#19 Old 08-30-2007
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Thanks abunch for the info. Where can I find these C2D people you're talking about??? I live in Miami, Florida
C2 Design - C2DUSA.com.

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#20 Old 08-30-2007
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Quote:
Originally Posted by Tslick View Post
Your talking static compression ratio (bottom dead center).

Gas engines have dynamic compression ratio that is determined by the cam.

In simple terms, depending on the cam lobe, you change the effective length of the stroke by closing the valves and detonate before bottom dead center.
Quote:
Originally Posted by ///AMG 55 View Post

static compression ratio that your engine displays on paper does not translate directly to higher cylinder pressures....
Yup, that's exactly what I was referring to - static compression ratio. Which is also the number published by manufacturers as the engines compressin ratio.

But I do understand the point you're both making. Forced induction and NOS also alter dynamic compression ratio/cylinder pressure. NOS in particular generates very high cylinder pressures, giving characteristic very high torque figures, which is why it has such catastrophic failures if not done right. I know when making cam selection on previous cars, I'd read all I could find on the topic - cam profiles is a black art in itself *L*.
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