'06 I6 CDI vs '07 V6 CDI-Which Is Better? - Page 2 - PeachParts Mercedes-Benz Forum

bustedbenz · #16 06-07-2009, 02:00 AM

I don't figure they'd put the "BLUETEC" label on the trunk badge of truth if it didn't have urea injection. And so there's definitely E320 bluetecs in the states.

Since I'm not a fan of "so quiet you can't tell it's a diesel" and not a fan of urea injection and not a fan of any additional electronic complications, I'd go for the CDI instead of the newer model every time. But that's just me.

I tend to suspect older models are almost in every case more long-term "million miles" capable than the next replacement will be. Another point in favor of the older design to me but others have complete confidence in the new stuff.

mike-81-240d · #17 06-07-2009, 02:20 AM

Quote:

Originally Posted by bustedbenz

I don't figure they'd put the "BLUETEC" label on the trunk badge of truth if it didn't have urea injection. And so there's definitely E320 bluetecs in the states.

Since I'm not a fan of "so quiet you can't tell it's a diesel" and not a fan of urea injection and not a fan of any additional electronic complications, I'd go for the CDI instead of the newer model every time. But that's just me.

I tend to suspect older models are almost in every case more long-term "million miles" capable than the next replacement will be. Another point in favor of the older design to me but others have complete confidence in the new stuff.

i couldn't agree more, plus you can get a cdi with 50,000 miles or so dirt cheap

http://portland.craigslist.org/mlt/ctd/1207483187.html

http://portland.craigslist.org/wsc/ctd/1196728212.html

http://seattle.craigslist.org/see/ctd/1208762734.html

Cr from Texas · #18 06-07-2009, 08:28 AM

[QUOTE=Cr from Texas;2218459]

Quote:

Originally Posted by TMAllison

The 06 has the SBC brake system. MB has warrantied SBC for 10 yrs from date put in service due to problems.

The 07 should have the 7spd 722.9 trans and SBC was dropped. QUOTE]

Is it practical to upgrade the 06 SBC brake system to the 07 design? What would be involved?

Read again, the question is about updating the brake system from the troublesome SBC to a non SBC system.

TMAllison · #19 06-07-2009, 12:20 PM

For like the 5th time, there are NO E320 Bluetec's in the USA with AdBlue (urea injection) up through the 09 model year. Zip, Nada, Nein.

That does not mean there aren't E320 Bluetecs WITHOUT AdBlue available.

There are GL, ML and R320 Bluetecs WITH AdBlue in the US that have been avail for a year or two. NO E's.

I would guess that getting rid of SBC would be a hardware and software nightmare.

mike-81-240d · #20 06-07-2009, 05:21 PM

Quote:

Originally Posted by TMAllison

For like the 5th time, there are NO E320 Bluetec's in the USA with AdBlue (urea injection) up through the 09 model year. Zip, Nada, Nein.

That does not mean there aren't E320 Bluetecs WITHOUT AdBlue available.

There are GL, ML and R320 Bluetecs WITH AdBlue in the US that have been avail for a year or two. NO E's.

I would guess that getting rid of SBC would be a hardware and software nightmare.

I hate to say this but you sir are retarded. Go ask the dealer thats nearest to you

the late 07-08-09 E320 Blutec DOES have Adblue urea injection i know this because 1. i have a brain. and 2. my buddy has a 2008 E320 Bluetec and when the dealer services it under warranty they fill the car with urea!!!!!!!!!

face it your wrong

2.5Turbo · #21 06-07-2009, 06:24 PM

Quote:

Originally Posted by mike-81-240d

I hate to say this but you sir are retarded. Go ask the dealer thats nearest to you

the late 07-08-09 E320 Blutec DOES have Adblue urea injection i know this because 1. i have a brain. and 2. my buddy has a 2008 E320 Bluetec and when the dealer services it under warranty they fill the car with urea!!!!!!!!!

face it your wrong

I'm pretty sure all of us have a brain.

AdBlue hasn't been used in the 211 yet, at least in the US. The technology has been in development for a few years. I did a little research and it looks like MB will use the AdBlue system in the W212 when it's released here later this year.

To meet Bin 5 standards, it has to use AdBlue. The 2009 does not use AdBlue is only Bin 8 compliant, according to MBUSA.

Quote:

BlueTEC clean diesel

The breakthrough powerplant in the E320 BlueTEC® reduces soot and harmful emissions - without sacrificing power. An oxidation catalytic converter and diesel particulate filter efficiently lower hydrocarbon and particulate emissions, and Selective Catalytic Reduction and DeNOx catalytic converters reduce nitrogen oxides. The result is simply the cleanest production diesel engine available.

And from another page from a quick Google search:

Quote:

Mercedes-Benz met the Bin 8 standards using a four-step series of catalytic converters and filters that remove carbon monoxide, hydrocarbons, particulate matter, and nitrous oxides. A fifth step, aimed at meeting the Bin 5 requirements, will involve injecting a magic potion called AdBlue into the system.

TMAllison · #22 06-07-2009, 07:05 PM

Quote:

Originally Posted by mike-81-240d

I hate to say this but you sir are retarded. Go ask the dealer thats nearest to you

the late 07-08-09 E320 Blutec DOES have Adblue urea injection i know this because 1. i have a brain. and 2. my buddy has a 2008 E320 Bluetec and when the dealer services it under warranty they fill the car with urea!!!!!!!!!

face it your wrong

Tis not I that is the village idiot........

DeliveryValve · #23 06-07-2009, 09:36 PM

Mercedes introduced AdBlue in the Fall of 2008. The SUV's R 320 BlueTEC, ML 320 BlueTEC and GL 320 BlueTEC are the first first diesel models with AdBlue injection.

The rest of the BlueTEC line up still had NAC+SCR were only 45 state legal.

Here is a piece on how BlueTEC works.

Quote:

How Mercedes-Benz BLUETEC Works
A technical tour of Mercedes' new super-clean diesel
By Aaron Gold, About.com

BLUETEC is the brand name Mercedes is applying to their new "clean" diesel cars. Let's take a technical tour of the BLUETEC system from engine to tailpipe.

NEW 3.0 LITER ENGINE
The heart of Mercedes diesel cars like the E320 BLUETEC is a new 3.0 liter V6 turbodiesel engine. The engine has four valves per cylinder and each fuel injector is located at the center of the top of the combustion chamber, in the same location where most four-valve gasoline engines locate the spark plug, for optimum fuel burn. A chain-driven balance shaft inside the engine smoothes out vibration.

COMMON-RAIL INJECTION
Whereas older diesel engines had a mechanical pump that fed each cylinder individually, the BLUETEC's injectors are fed by a central fuel rail that is supplied with fuel at extremely high pressure (approx. 23,000 psi).

PIEZO INJECTORS
Diesel combustion is achieved compressing air to raise its temperature and then injecting fuel. The fuel burns and expands, pushing the piston down. Traditional injectors used a mechanical or magnetic valve. The Mercedes engine's individual injectors use piezo-ceramic elements whose crystalline structure changes shape as electric current is applied. The piezo injectors can divide the injection cycle into as many as five separate injection events, each specially timed to maximize combustion efficiency. This not only improves economy and lowers emissions, but it also reduces noise.

EXHAUST TREATMENT
The BLUETEC system has a number of components that "scrub" the exhaust before it is released into the atmosphere. Two variants of the BLUETEC system exist: the NAC+SCR system and the AdBlue system. NAC+SCR is used on the "45 state" version of the E320; AdBlue cars will be introduced in the 2008 model year and will be sold in all 50 states.

NAC+SCR
Exhaust leaves the engine and passes through a Diesel Oxidation Catalyst (DOC), which reduces carbon monoxide and unburned hydrocarbons in the exhaust. Next is the NOx Absorber Catalyst, or NAC, which removes and traps oxides of nitrogen (NOx is one of the chief elements in diesel pollution). During periods of lean operation (low fuel-to-air ratio) NOx is stored; under richer operating conditions (which can be created by manipulating the fuel injection) the NAC undergoes a regeneration process and releases ammonia into the exhaust. The ammonia is stored downstream in the Selective Catalytic Reduction (SCR) catalyst which uses it to further reduce NOx.
In between the NAC and SCR catalysts is a particulate filter that traps particulate emissions (soot). As the particulate filter becomes full, the engine computer manipulates the fuel injection process to raise the exhaust gas temperature, which in turn burns off the particulates.

ADBLUE
The AdBlue system houses the DOC and particulate filter in a single housing. In addition to the NAC catalyst, ammonia is supplied by injecting a fluid called AdBlue into the exhaust upstream of the SCR catalyst. The addition of AdBlue fluid enables the SCR catalyst to reduce NOx emissions to a level even lower than the NAC-SCR system. AdBlue is carried in an on-board tank which can be replenished when the car is serviced; a gallon of AdBlue fluid lasts approximately 2,400 miles.

Skid Row Joe · #24 06-07-2009, 10:52 PM

Which is better? Who knows.

But all things being equal as possible, I would be a buyer of an '06 CDI. Because of the I-6 configuration. I would wait for the lowest mileage southern or southwestern state '06 CDI that I could find.

mike-81-240d · #25 06-07-2009, 11:43 PM

opp's i f*cked up, wow i feel mega retarded:p anyway my votes on the real diesel(06 I6 CDi)

Gilles Kay · #26 06-08-2009, 09:04 AM

Thanks for all the input, everybody. I really didn't mean to start a major argument. I appreciate all the positive input. I will discuss all this with my MBZ mechanic. As always, THEY are the ones who see these cars on a frequent basis and know the good and bad.

Cr from Texas · #27 06-08-2009, 12:29 PM

Quote:

Originally Posted by mike-81-240d

opp's i f*cked up, wow i feel mega retarded:p anyway my votes on the real diesel(06 I6 CDi)

Some of us can blame "senior moment" to this type of issue.
Anyway, I would have already bought an 06 CDI but I'm concerned about the braking system. From what I've read, these can be dangerous to do DIY work on.

TMAllison · #28 06-08-2009, 12:40 PM

Quote:

Originally Posted by Cr from Texas

Some of us can blame "senior moment" to this type of issue.
Anyway, I would have already bought an 06 CDI but I'm concerned about the braking system. From what I've read, these can be dangerous to do DIY work on.

Although a weak system, it is not so bad to work on. You need to put the system to sleep frist as the pump cycles on and off in anticipation of needing to be used. Close doors, leave alone for 20 minutes and do not open doors or insert key until brake service is completed.

Confirm procedure before using as I am stating that from memory and could be forgetting a step.......

polarisrmk · #29 06-08-2009, 01:28 PM

Mom has a 07 Jeep grand cherokee with the Merc v6 3.0l diesl i must say it is phenominal at towing. I test drove the I6 vs the V6 diesesls side by side when the v6 first came out and the V6 is much faster or at least it feels that way. I vote I6 for simplicity but if you have the money i wouldn't hesitate for the V6. Remember VW, Audi, Jeep are all using versions of the V6 diesel engine now, parts shouldn't be too hard to come by in the distant future.

DieselAddict · #30 06-08-2009, 02:04 PM

If I recall correctly from reading info outside this forum, the 2007 model was not urea injected, but 2008 and newer are, but I could be wrong. Does it really matter anyway?

I agree generally what's been said here about the comparison. I've driven a number of CDI's and an 09 Bluetec. Power wise they seemed about the same. I did like the idle sound of the Bluetec better though. No doubt it's still a diesel (to a knowledgeable ear), but it sounds a lot smoother than the older I6. I didn't have any problems with the 7-speed transmission either. If you don't pay attention, you really can't tell if you have 5 or 7 gears. But no doubt the I6 would be easier to work on. However the glow plugs are still known to break off in that engine. I don't know about the V6 if it still has those fragile glow plugs. Anybody know? And needless to say the Bluetec is much cleaner which means no exhaust smell whatsoever. The older CDI's and TDI's you can still smell them, though it's not too bad and it's a chemical smell rather than a "smoky" smell.