[alabbasi]

The 6.3 was lighter and had a 4 speed automatic as opposed to the 6.9's 3 speed which made it a quicker car. The 6.9 was more aerodynamic which made it a faster car.

I have no idea how these engines would behave in a C107 body but from what Ron say's about his buddy's car. It goes like a scalded cat.

 

[roncallo]

It would probably behave like this. Very cool. Does anyone have an engine weight of a 6.3/6.9

 

[ardavan_ss]

6.9: 285HP & 549Nm
6.3: 250HP & 500Nm

Looks like the season for first time posters to come on and spread manure.

Ardavan, would love to hear more about the SLC though. Pics would be great.

I get the feeling we will never hear from you again, but i would love to be proven wrong.

Sure, it is my pleasure to be here and learn from you.
Here are some photos that I've taken from my uncles 450SLC. sorry for being dark.
However I want to refer to Automobile magazine, year 2009 , Vol.1 that mentiones 6.9 produces less power and torque than 6.3.

My father also has a 300SEL 6.3, I've tested both.

 

[Fotografa]

I'm glad you came back! Thanks for sharing! Hate to burst your bubble, but that engine pic you have posted is not a 6.9. 6.9 engine does not have those valve covers. Looks like a 450 117.985 engine.

With regards to the article, the 6.9 might have been choked of power by emission controls, but only in the US, not in ROTW.

 

[alabbasi]

However I want to refer to Automobile magazine, year 2009 , Vol.1 that mentiones 6.9 produces less power and torque than 6.3.

My father also has a 300SEL 6.3, I've tested both.

Hi, while that 450SLC looks to be a very nice car. It does not have a 6.9 liter engine.

The cam covers are much bigger on the 6.9 liter engine and they is no oil fill location on them. One can of course convert it to wet sump but the engine in the green car that is pictured is definitely an M117 engine and hence there is no surprise that it's a slower car.

WRT to power output, it depends what the quoted from (SAE or DIN). I've read that the 6.3 produces 250hp in some articles and 300hp in others. There is also a drop in power after 1969 for US delivered cars as compression ratios were lowered to meet emission regulations.

Probably none of that matters today as most engines perform based on condition and wear.

 

[ardavan_ss]

I'm really glad that you agree with me because I didnt think it is a 6.9
in fact while servicing fuel injection system , Mercedes benz first sent stuff for 450, but that didnt work for car, and asked about engine serial number, and then company replied it is 6.9.
however I dont believe, as the first owner of car was an experienced
Benz mechanic, but never labaled his car 6.9... however let my uncle suppose it is 69

Can you guide me through topic where I can discuss about my father 300SEL 6.3 (1972) ? I have some questions about that

 

[roncallo]

6.9: 285HP & 549Nm
6.3: 250HP & 500Nm

Looks like the season for first time posters to come on and spread manure.

Ardavan, would love to hear more about the SLC though. Pics would be great.

I get the feeling we will never hear from you again, but i would love to be proven wrong.

285 HP 250HP, nobody really gives a shit. When it comes to the M100 back in its day HP and torque may have been impressive. Today 6.3 with its Mechanical FI and solid lifters, makes all the right sounds and has all the right smells and it just looks cool.

 

[zukamb]

450SLC 6.3

Reputedly the green 450slc with 6.3 engine built for the banker (or one similar to it) was imported to the U.S. by Barry Taylor Enterprises and sold to a new owner in Oregon? Anyone seen this car lately?

Stefan,My Friend in Germany ,built his 6.9 SLC himself,what I was saying was ..AMG built eight cars with 6.9 engines PLUS 8 with 6.3 engines.
But firstly,a bit of idea of what was involved in this conversion.
First.AMG had their own bonnets( 'hood' to USA persons) which had a different profile.
So what Stefan and I decided was that the engine had to sit lower.The solution to this was to sit the front of the body on 2inch thick spacers ,between the body and front axle.
This meant that the engine centerline was now 2" below normal so the drive shaft had to have another universal instead of the flex disc.
At this point another problem arose; the adapter plate for the uni joint was too big to fit in the tunnel so a large hole had to be cut to fit it in.
Springs are stock at present but if you look at the pic of the engine you can see the suspension pump is still in place.
Stefan tells me he has an idea of fitting the hydro suspension from his donor 6.9 to the SLC. Not a complicated exercise ,but very time consuming. Self leveling is an option on the W107 but 6.9 's don't have springs ,just hydro .
struts....
As most of you know,the 6.9 is a dry sump engine which meant the oil tank needs to be located somewhere.
Stefan's approach was simple enough..cut the panel from the 6.9 and mount it in the same place on the 107. The finished result looks like it was designed by Daimler Benz. The oil filter has to be moved as it sticks out and would hit the radiator so he made his own remote mounts.
Now to the AMG story.
unlike a lot of AMG SL's one see's about (I have mate who has a W107 280SL AMG,) there were some real performance cars built.Where do i get my info? through Stefan who has met and confered with the Very people who did the Work at Affalterbach!
First there was this..The sublime

A 350SLC with M-100 6.3 by AMG

Stefan tells me he knows this car ,it has survived because it spent over 20 years in storage.Not good for 6.3's..
And there was this...AMG 7.2 liter SLC.with 5 speed.... The ridiculous

Built for the boss of Dresder bank as a security device,the thinking being that if the Red brigade attempted to kidnap him his driver could out run them.

Note the unique injection setup to gain hood clearance.
I have,on my other system pictures of several 6.9 conversions underway at AMG .This was at a time when the company nearly folded when 18 orders for work were cancelled on one day,all because of rising fuel costs. Although Alfrest and melcher are still heavily involved in AMG,the company is a far cry from the tuner it was in those days.