Hi,

The rings are not BRABUS but Mercedes parts as there is nothing special about them.

The valves had rocked in there valve seats and therefore there were marks or an "edge" on the end of the valves, there edges was not possible to remove without removing to much of the valves to be reused.
The inlet valve guides is changed by BRABUS from kobber to steal guides.
Thouse were just fine.
The outlet valve guides had to big tolerences and was replaced with new Mercedes Parts.
All valve guide seals is of cause replaced, but were acturely replaces for only 1 year ago when I changed all 24 hydraulic lifters without any effect to the consumtion of oil.

The whole head was sent for a rebuilt.
This includes:

disassembly of the cylinder head
Washing and ultrasonic cleaning
Level Grinding
Pressure test
New in and outlet valve Seats and machined
outlet Valves replaced with new ones
Inlet valves Glas blown and machined and polished.
Level Grinding of the head
assembly of cylinder head

All this work was ofcause left to the engineer at www.RMC-Motor.dk
He realy knows his job very well, he s also used by Mercedes Denmark and Sweden and Jaguar, Porsche and several others.
He is known in the Whole Nordic countries to be "the one" who can make the job when every ones else give up.

He have also made several BRABUS and AMG heads through his 30 years of experience in rebuilting and repair of cylinder heads.

Any way, im not going to use the pistons again, because the cylinder showed to much wear and had been rebored of the former owner so the pistons clearance is to great, so I will find an other M103 Block and Rebore it to 92,25mm and go with new JE Pistons 92,20mm
The old one was between 92,14 to 92,16 so they were worn out 0,04-0,06mm. as they should have been 92,20mm.

The bore was also re measured from 92,27mm to 92,29mm that gives a clearance of 0,09mm to 0,13mm and it should have been only 0,05mm
So both the pistons and the cylinder bore was i bit to big.
Some say it shouldent give problems, but the Engineer at RMC-Motor tells me to not go with a half solution that will end up giving me that same oil consumig problem and makes the piston rings brake again.

I guess he is right, so I will find a new Blok and bore it to theoriginal size of 92,25mm and go with JE forged pistons of 92,20mm.
Then I will have a complete new engine to last for at leats antoher 200.000 Km.

Expencive,,, just i bit, just i bit worth the money,,, Deffently every single coin

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Wow,you have replaced alot of parts...including the very expensive lifters!.

Sounds like you have it all under control =)

My only advise is to be VERY careful what pistons you plan to run,from experience JE does not make a forged blank piston that has a similar skirt depth and has sufficent material to cut and make the piston locate the rod on the Mercedes engine.
The other issue is a JE forged piston will have a large piston to wall clearance and will wear much faster.
I wonder if Mahle(mercedes pistons supplier) would do a high pressure cast piston for you?..it might be worth a shot.Forged pistons are really not needed for the power you run,but thats just my opinion!.

This is what my JE piston looked like after 2000km's.,the wear is right through the machine marks.

The forged JE Pistons I will run will be design from the old forged KolbeSmith Pistons that was original fitted from BRABUS.

The Pistons should be Forged because due to the longer stroke the engine runs with 7000 RPM. and becuase of an higher compresion rate.

The pistons have a higher speed because og the higher stroke and the same 7000 RPM.

BRABUS also say that I can only run with Castrol RS 10W/60 oil due to the forged pistons and the clerance that it run with.

That is only what I have been told, I donīt know anything of it my self

The old pistons will be delivered to JE and they will make an simular piston with all the same clerances and tolerences.
They will make at in blank forged piston, but I have the oputunity to get it Covered with some black coating that wil make the piston get a smouther surface with less friction and get a stronger surface to stand against wear.
But that will cost some ekstra.

6 Pc. special design Forged JE pistons with rings, total with tax 1580 Euro
6 Pc. Special black Coating for less friction total with tax 135 Euro

And then my plan was to find another M103 block move all the parts and rebore it.
I will then deliver all the pistons to the ingeneer that will bore out the block, they never bore any cylinder without having the pistons, that sounds like they know the importans of doing the job right.

total I think the whole repair/rebuilt of the engine will cost me about 4700 Euro, then I have also changed the chain and chain guide and gear.
And my ASR/CC Final control element that only could be accest with the inlet manifold of the engine, this thing cost the 100 Euro on Ebay and works fine, just tested by pluggin it in and pushing the trhotle, and then it moves and my ASR fault lamp was no longer lit up.

I dont like to do half a job or to go compensating on things becuase money are short, then I will just wait until the money is there to do things right.
even thogh you sometimes fell that you are spending wothless money on something that could have been reused, I like the "idéa" of thing being "new" when you are in there anyway

hey man, can i ask u to measure the length of the rods on ur 3.6 and the main crank as well.
Any know whats the rod length of the 3.0 m103?

__________________
Jay,
-----------------
-1995 Blue W202 C36 AMG (M) SOLD ;(
-1995 Black W140 S500 (Lady)
-1992 Black W124 E300 (Dima) (Ex-Mosselman
Twin turbo Kit).
-1988 Black W124 300 E 4-Matic.(Nadeen)
-1983 Brown W126 500SEL.(Old Lady)(Sold)
-1981 Gold W123 280CE.(Dareen)(Sold)
http://www.youtube.com/user/jayrasheed

Ofcause you can it was my idea to make all the information available when i got the time to make all the measurements.

I know the stroke is 90mm and the rods are blue printet by brabus to make them lighter and to make the oil flow faster away from the rods I was told be the engineer at RMC-Motor

The crank is a steal crank from the 350SD (I think) the rods is still the orginal ones from the M104 engine (I think)
But you can see the rods Mercedes numer of one of the pictures
There is printed 201XXX just check my pictures.
The crank will be measured when I get it out, but it will be 2 or 3 weeks from now because I don+t have the time right now to continue with the projekt

But stay tuned and I will post everything and all data when finished

Octane has absolutely nothing to do with quality. Nothing. It has to do with resistance to detonation. No matter what kind of gasoline engine you have, you should run exactly the correct octane that is called for. Not more and not less.

__________________
'98 E300 turbodiesel

i know exactly what the octane rating is for, i say quality for lay-mans terms,
as quality is "generally" a measure of octane rating of fuel,
petrol stations even sell there fuels under quality descriptions such as "regular" "mid-grade" and "premium"

but you are correct that these are terms for the general public, and i should have been more specific with my post,

BRABUS write that only "Super Bleifrei" (German) must be used.
I think that is 98 octane, but around here it is no longer avaiable at every gas station.
Only very few has it.
All the others have 92, 95 and the 95 Danimic/Nitro or what ever they call the fancy new fuel cleaning fuel system.

But SHell always have there 99 Octane V Power, but it is so damn expencive and I only want to run at the fuel I can get from Q8, because I have en very good discount price there because I worked there for some years ago.

But ofcause you will have to run on what not only is the best but also on what is requite of the engine specs.

But the fuel have nothing to do with the problems im dealing with here.

Next week I will take out the entire block and get it bore out just a bit and then get new pistons from JE disigned from the originals.
Then I will have an engine I know is totaly like new.

Much more pictures to come and videos

Just a litle update.

Got my head back from the repair shop.
Made a new CNC engine badge in aluminium, stronger than the original.*
The engine blok is also back from the shop rebored to 92,35mm.

Pistons and con rods are on the way from JE pistons.

It will be New forge pistons with:
Moly coated skirts
Lightweight Wrist Pins
Street Performance Lightening
Contact Reduction Grooves

New forge performance rods with:
ARP Rod Bolts installed
Rod Bearing Set

BR,
BRABUS

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Just some pictures of the newly designed engine badge and the car

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So wait you can use the M103 bottom end with a M104 head? Does it match up or did they make some changes to bolt patterns? Just curious.

__________________
2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

Realy I donīt know

But I think that the M103 engine arenīt born with piston bottom oil sprayers and I know the M104 is, and I have the oil sprayers, so realy I donīt know what and where it was modified, but for some reason even the 300E-24 models was not an angine makeover, they always seamed to use the M103 bottom end and reused the head.

For the W201 they built the BRABUS 3.6-24, that was never awailable in the 190 model, on the basis of the M103 2.6 engine and made that bigger bore and used a M104 head and a new steal crank with other pistons from Kolben Scmith and some other con rods.

Many peaple say that the crank comes from the 350SD but this crank has a stroke of 92,4mm. and all the brabus 3.6 modified engines all have 90,0mm stroke.
So brabus did make there own crank, it was only AMG that used the crank from the 350SD, and they have the axact same stroke 92,4mm

And for thouse who donīt know the problems that Mercedes ran into with this stroked diesel engine, then I can tell that many has suffer from huge oil cunsomtion, bad 1 cylinder shape over only 100.000 Km. and somehaw some of them managed to bend the rods or make huge wear on cyl. 1

A problem that mercedes didenīt realy wanna aknolage, but many canadians have had these problems becuase almost 75% of them was sold there.

So with that in my mind, I wuld be more carefull to by an E36 AMG than bying a BRABUS 3.6 but who says that the AMG suffers from the same problems that the diesel engines suffert from

Just an interesting thought.

i would imagine that the amg 3.6 had a comp ratio of around 10 or 11 or one, wich is about the right number for a hi-po n/a petrol engine.
desils run around 17 to one even with a turbo( my alfa 147 19 tdi ducati corse is 17.5 to 1 and fitted with a turbo), wich will explain why some of the 350's have problems.
using a desil component for a petrol engine is a good idea due to the much lower(relitive) comp ratios.

__________________
ce 320 amg
widebody
tiwn turbo
Mutty 'der nail'
soon to be a six speed nail


"some mods improve your car and make it into something it never was, other mods, however, although essentially the same, are not, and make that car a ricer"

if your car isnt shiny, you dont know what you are talking about, remember; paint shine = knowledge. In order to be taken seriously, you should spend all your money on paint, (and get a dyno reading).
Dont forget to polish it often

I dont think the m104 3.6AMG has any of the issues mentioned above. I drive my AMG daily giving its engine a beating every chance i get, i ever have semi-slicks Toyo R888 on it now, and i ripp up my favorite mountain highway (the one in my utube vid) and oil consumption is just like its manual says it should be.
I also have oil temp gauges for both the engine and the gearbox, and even after such flatout runs temps are always in check. The engine oil has never crossed 95C' and the gearbox even at such abuse maxes at 100C'.

i think its a really good engine.

__________________
Jay,
-----------------
-1995 Blue W202 C36 AMG (M) SOLD ;(
-1995 Black W140 S500 (Lady)
-1992 Black W124 E300 (Dima) (Ex-Mosselman
Twin turbo Kit).
-1988 Black W124 300 E 4-Matic.(Nadeen)
-1983 Brown W126 500SEL.(Old Lady)(Sold)
-1981 Gold W123 280CE.(Dareen)(Sold)
http://www.youtube.com/user/jayrasheed

exactly, the crank from an engine designed for very high (17. whatever to one) comp ratio's, but only running 10 or 11 to one = very reliable and strong.

merc engines use very short (relitive) skirts, so with massive comp ratios(350 d), will be, i would imagine, prone to twisting.

__________________
ce 320 amg
widebody
tiwn turbo
Mutty 'der nail'
soon to be a six speed nail


"some mods improve your car and make it into something it never was, other mods, however, although essentially the same, are not, and make that car a ricer"

if your car isnt shiny, you dont know what you are talking about, remember; paint shine = knowledge. In order to be taken seriously, you should spend all your money on paint, (and get a dyno reading).
Dont forget to polish it often