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R129 SL 72 AMG (M120 7-liter engine specs)

Let's make it a bit more complicated :agree:, there are also E70 with LH-SFI, and E72 with ME 1.0.
The ariok47 having E72 ME 1.0.

And there are even E70 with LH-SFI with 386 kW / 525ps / 518 hp, @ 5900rpm, with unknown Nm/tq to me.
As shown in #15 1st image.
To add to the confusion I see the AMG 45 book has different numbers. So much for this expensive book. It states:

SL 70 (97/98/ME1.0) is 7,055cm3 but with 97mm bore and 92mm stroke. 750Nm and 496HP
SL 73 (99-01/ME1.0) is 7,291cm3 but with 80.2mm bore and 92.4mm stroke. 750Nm and 525HP although "torque increased from 720Nm"

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SL 70 (97/98/ME1.0) is 7,055cm3 but with 97mm bore and 92mm stroke. 750Nm and 496HP
SL 73 (99-01/ME1.0) is 7,291cm3 but with 80.2mm bore and 92.4mm stroke. 750Nm and 525HP although "torque increased from 720Nm"
Looks like the bore/stroke numbers are reversed? Bore is always in the 89-92mm range (never 80 or 97).

:blink:
 
To add to the confusion I see the AMG 45 book has different numbers. So much for this expensive book. It states:

SL 70 (97/98/ME1.0) is 7,055cm3 but with 97mm bore and 92mm stroke. 750Nm and 496HP
SL 73 (99-01/ME1.0) is 7,291cm3 but with 80.2mm bore and 92.4mm stroke. 750Nm and 525HP although "torque increased from 720Nm"
These two are easy to solve. 97 x 92 makes 8158 cm³, and 80.2 x 92.4 makes 5601 cm³.
 
Makes me wonder what else is wrong in this book now.
Yeah... any time I find glaring errors in what should be a "bible"... it makes me really suspicious about the accuracy. :scratchchin:

Ditto with the in-famous 124 bible by Stu Ritter. I found a half-dozen errors from a cursory skim shortly after it was published. There were probably more but I had no incentive to locate document them all.

1724165130054.png
 
Thank you. The owner of the Brunei SL73 565 hasn't answered yet. I pointed him at this forum, and at this thread. Maybe he'll participate.
 
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The proper amg engines with increased displacement have an upgraded pair of air filter housings. Years ago I had them in my hands. Iirc was the lower section (the actual fresh air side/pre filter) modified and made of sheet metal (not 100% sure) and the induction funnels which extend to the front on the sides of the radiator are different too.
Standard V12 housing have an thick internal layer of relatively hard sponge material for noise reduction purposes.

Don't think the standard V12 performance kit got these.
 
Haha. I think we enthusiasts are way too impatient. Thinking about these very rare AMGs all day long.
This at least goes for me. :agree:
Ariok is a businessman. It's not that hard to find out what he is dealing with.
SL AMG conversations are of way less concern of course.

In DM he showed me these two though. Without telling any restriction. So showing is ok, i assume.
 

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I ask myself how Artcurial listed the ariok SL72 at 532 bhp. Which is 539 PS.
Several previous postings in this thread claim 510 PS.
But where does that lead this document, that shows 525 PS?
 

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E70 Power Pack. That is what´s written here.
39.jpg
It´s in the description of this 2020 auctioned SL70. 1996 Mercedes-Benz SL 70 AMG | London 2020 | RM Sotheby's
This SL70 first showed up in #32, the PurpleDog car, and years before the Sotheby's auction.

I must have seen it in 2020. But i also must have thought it to be a regular SL70. Less interesting.
Had i known about the E70 Power Pack, i would have paid it more attention.

Now it´s up to emails and DMs, to see if i can fetch a stamp, similar to the ariok SL.
 
Searching in my archive, this must/might be E70 Power Pack too. Since looking at some clues, 500+ bhp/displacement of 7200cc, at the end of this description.
18.jpg

It's about this SL. VIN shows late 1995. Images from 2016.
 

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I see. The one with the AMG 0029 7.0 stamp. You showed it earlier in this thread.
So that one didn't have the M072 layout. Apparently not all E70 Power Pack have this. Makes it even more special.

I saw it first 9/2015. Figured these "7.2 Ltr/Extremly Rare/510 ps" quotes must be sales talk. How wrong was i.
o.jpg
 
This Patina video might be useful too. In specific Oliver Kurz, Head of AMG Classic.
He comes in at around minute 2. Kurz is on FB too.

I am not that impressed (anymore) by the 'normal' AMG customer services. I feel the knowledge of older cars is no longer there.
But maybe it's because i am not the owner, therefore they won't let me in, due to privacy.
 
The more you search, the more you find.

While reminiscing, i knew i had this in my archive.
a.jpg

It´s this one. V140 with E70 Power Pack?
16.jpg

It seems these E70 Power Packs come in different PS stages, varying from 510 via 525 to 539.
And maybe they were already availible for LH-Jetronic engines?
As shown in #15, where the Fahrzeugbrief of a S600L from april 1995 shows a M120 7.0 with 386 kW.

What also strikes me, both V140 with E70 Power Pack have ......
Order LocationHAMBURG BRANCH

This cannot be a coincidence.
 
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Is there any factory documentation mentioning the "power pack" ? Price list / brochure ?
I don´t have it. I only know about this E70 Power Pack for a few days now.
Maybe ariok47 has it?
I've sent an email to Britta Buchmann of Sothebys. That is where i first read about it.

I've also sent a DM, via Instagram, to the r129slclub in Germany. Maybe they know?
 
I don´t have it. I only know about this E70 Power Pack for a few days now.
Maybe ariok47 has it?
I've sent an email to Britta Buchmann of Sothebys. That is where i first read about it.

I've also sent a DM, via Instagram, to the r129slclub in Germany. Maybe they know?
I already called the R129 Club in Germany, they don't know much about the AMG variants.
 
@weide1

Here are the relevant documents for the SL70/72 in question. I had these saved on my computer.
In the end, you'd need a picture of the engine stamp but I couldn't find you one.

It would appear that it may in fact be a 72 given the note "performance increase to 510 PS by conversion to 7.2-liter M120 for 140" and "complete and install engine M120 E72 for 140". Presumably engine borrowed from S72/CL72 Coupe, for which I've included the data sheets. However, note that PS is 510 as noted for the car, although the data sheets says M120 E72 should have 525 PS.
 

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The engine stamp is in post 169. It shows AMG 0029 7.0.

When i referred to E70 Power Pack two weeks ago, ariok47 responded with showing a link to a Sotheby SL70 that he owns too.
I recognized that car, since it first showed up in this thread in post 32. And i knew it had AMG number 0029, having multiple documents of that car.

So in post 225, it made sense for me.

Which also brings up another issue.
If the E70 Power Pack has AMG stamp 7.0, then the M072 stamp from the Artcurial SL70 might imply E72 Power Pack?
 
Ariok47, thanks. To be honest i didn't expect you anymore to post these images.
That you did anyway i truly appreciate.

One question, where is the epsilon symbol and compression ratio?

It would have been easy to have The Emperor force-choke him to produce the photos faster….
 
I don't find photos of his SLs interesting. SLs all look more or less the same.
The AMG and M-B engine stamps are more valuable to me.

Besides, several photos of his blue SL70 and his silver SL70/72 are in the auction links.

No, i am more eager to have ariok show a document that confirms the E70 Power Pack.
I asked Sotheby. But since i'm no owner, they won't give me such a document.

That is, if it exists. Maybe Sotheby made it up.

Which is why i also like to know what package came to 532 bhp for the silver SL70/72?
It's in the text that comes with the Artcurial auction.

Maybe it's the E72 Power Pack?
An engine management computer borrowed from the upcoming 73 motor, to gain extra bhp?
 
This is what i mean .Sothebys ok .Look you see nice boobs or what ever zack take your Phone and take a shoot. max 5 seconds done.
what is so difficult? And yes old pics from Auktions copy and paste.that can doo i too.Make a pair of pics and i say Excusme Ariok47.
For me is this theme done.sorry
 
Two interesting photos that i received from Carspotting Canton.
Especially the photo of the engine, which has a picture/sticker that looks a bit like the Pagani picture in terms of layout.
 

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@weide1 & @WDB748372 :

The seller of this SL73 is claiming no SL73 has code 957. Is that accurate? Seems odd to me:


"We also have notes on our end that no SL73 has the code 957. This code is said to have only come on the regular SL600's before being converted by AMG, and prior to the first registration."


:gsxrepc:
 
The seller of this SL73 is claiming no SL73 has code 957. Is that accurate? Seems odd to me:

"We also have notes on our end that no SL73 has the code 957. This code is said to have only come on the regular SL600's before being converted by AMG, and prior to the first registration."
Yeah that is accurate. I don't know why but Mercedes didn't. Same for the W140 chassis.

Although the seller's claim "This code is said to have only come on the regular SL600’s before being converted by AMG, and prior to the first registration." isn't accurate. The 990/957 codes were not added to any of the V12 R129 or W140 (I'll double check later tonight). I had gone through all of them which led to this post at the time. I'm assuming those two were added the code later. Not sure if I remember any outliers for R129 but will get back later.
 
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Fascinating. I wonder why MB had code 957 for the M119 only, and not the M120.

:scratchchin:
Right, I couldn't make any sense of it. To add a bit more, I had looked at 140.042/043/050/051/056/057/063/070/076, all V8/V12, and none have the 957/990 codes except for two which I would imagine were added later.
Looking at this SL73 it's from 1999 so that might explain why this doesn't have it? Not sure when 957 stopped by I would imagine late 1997. Maybe Mercedes didn't bother creating a separate chassis code to differentiate it from the SL600 which would've separated this AMG model and what they would do for the C43, E55 etc. But then again the model designation is the same so no attempt there either.

For the R129, the 500SL 6.0 (129.066) and SL60 (129.067) only have the 957/990 code. Just V12's (129.076) don't.
 
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The other being .....?
The second one is WDB1400501A208240.
"Vehicle scrapped, engine installed in chassis W1240361B734480 [WDB1240361B734480] Vehicle converted with code 957 before shipping"

This is the car that had its engine installed in a 500E and the 957 code was added later to that 036.
I think it still proves the point that Mercedes never added 990/957 at all to the V8/V12 140 chassis models but when removing the engine off of this, 1A208240 had it added later by an authorized person as it was an AMG model.
 
Thanks.

I found these documents. Seems an early AMG 324 kW [435hp] package. However, mb140_school thinks it's updated after 1993.
I asked him how he can tell.

In return i forwarded him VIN WDB1400501A208240. Curious what his reaction will be.
 

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@WDB748372 Can you find VIN by this engine number?

It belongs to this badged SL72 from 3/1998, but has M120 7.0 in the car registration document.
 

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