S55 AMG, S65 AMG , S63 AMG (W220, W221) 2001 - 2013 (Two Generations)

6.0 V12 con rods stronger than 5.5 V12 Biturbo?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Oct 3, 2014 | 04:57 AM
  #1  
VMAX7's Avatar
Thread Starter
Senior Member
 
Joined: Feb 2010
Posts: 433
Likes: 4
From: Palm Beach,FL
2000 S430, 2000 S500 Both Brilliant Silver!
6.0 V12 con rods stronger than 5.5 V12 Biturbo?

Over the past year ive seen more than a few M275 V12TT motors blown due to connecting rod failure. I may or may not be interested in a 220 S65 in the future depending on the strength of the 6.0's connecting rods.

Ive been eyeing a few '04+ S600s for a few months now but they seem to be less reliable than the '05-'06 S65. Anyone with experience care to shed some light on the reliability and longevity of the 6.0 powerplants?
Reply
Old Oct 3, 2014 | 05:02 AM
  #2  
VMAX7's Avatar
Thread Starter
Senior Member
 
Joined: Feb 2010
Posts: 433
Likes: 4
From: Palm Beach,FL
2000 S430, 2000 S500 Both Brilliant Silver!

Last edited by VMAX7; Oct 18, 2014 at 03:00 AM.
Reply
Old Oct 4, 2014 | 03:41 PM
  #3  
COOPERDB's Avatar
MBWorld Fanatic!
 
Joined: Jul 2014
Posts: 1,270
Likes: 160
From: UNKNOWN
NB8 PARACHUTE
`


I have been told that the

rods in question are stronger

in the w220 S65 than in

w220 S600 -

Please correct if this is wrong -


Thank-You ---


`
Reply
Old Oct 11, 2014 | 09:51 AM
  #4  
Exotic-metal55's Avatar
PLATINUM SPONSOR
15 Year Member
 
Joined: Jun 2008
Posts: 3,834
Likes: 65
From: Texas
2003 CL55
Originally Posted by COOPERDB
`


I have been told that the

rods in question are stronger

in the w220 S65 than in

w220 S600 -

Please correct if this is wrong -


Thank-You ---


`
65 rods are stronger and not sure what motors blow from conrod failure but they must be boosted way up or running n20. Stock AMG conrods are really strong but if you start increasing power over 20%, then parts will get stressed.
__________________



E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.

CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.

www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
Reply
Old Oct 12, 2014 | 11:41 AM
  #5  
Speedriven1's Avatar
Banned
 
Joined: Sep 2010
Posts: 2,542
Likes: 72
From: Palatine, IL
Speedriven
Originally Posted by Vmaxx
Over the past year ive seen more than a few M275 V12TT motors blown due to connecting rod failure. I may or may not be interested in a 220 S65 in the future depending on the strength of the 6.0's connecting rods.

Ive been eyeing a few '04+ S600s for a few months now but they seem to be less reliable than the '05-'06 S65. Anyone with experience care to shed some light on the reliability and longevity of the 6.0 powerplants?

Both the rods and pistons on the 600 are not as strong as the 65 motors. But By no means are the 600 motors not durable. I am curious where you have come across several motor failures? We have put a couple 600 motors well into the 700+whp range with no issues to date.
Reply
Old Oct 16, 2014 | 06:59 AM
  #6  
VMAX7's Avatar
Thread Starter
Senior Member
 
Joined: Feb 2010
Posts: 433
Likes: 4
From: Palm Beach,FL
2000 S430, 2000 S500 Both Brilliant Silver!
Ive been trying to find the engine swap thread of a member on this forum but nothing comes up in the search. I vaguely remember it were two members within the past year and a half who've blown "stock" S600 V12TT motors.

I am apprehensive to believe they were completely stock bc I too have thought and still believe that keeping it stock means a long lasting engine.

Please see the youtube vid in post #2, that car has a blown motor and has since been parted out, he has more videos of it in pieces, this first video is to show the excellent and usable parts left on the car before it gets parted due to a blown V12. Scroll ahead in the vid to hear the car run.
Reply
Old Apr 16, 2015 | 12:10 AM
  #7  
BenzBoy12's Avatar
Super Member
 
Joined: Dec 2006
Posts: 568
Likes: 1
1988 535i 5 speed
If you make enough of something, one or two will always be defective. In general, the M275 seems to be an very strong and overbuilt engine.
Reply
Old May 11, 2015 | 12:39 AM
  #8  
jpohl402's Avatar
MBWorld Fanatic!
 
Joined: Dec 2007
Posts: 2,052
Likes: 2
From: PHX/PIE/OMA ---> Yes, all three
E55 then E63, now back to an E55
Originally Posted by VMAX7
Over the past year ive seen more than a few M275 V12TT motors blown due to connecting rod failure.
I have heard of this as well...
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 07:12 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE