R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

Engine swap

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Sep 23, 2019 | 10:56 AM
  #1  
JPAMotorsport's Avatar
Thread Starter
Newbie
 
Joined: Oct 2017
Posts: 3
Likes: 0
r350
Engine swap

Will an engine from an ML work in my R? Some say yes Mercedes says no, nobody can tell me what is different?
HELP PLEASE
Reply
Old Sep 25, 2019 | 05:31 PM
  #2  
houseofdiesel's Avatar
Member
 
Joined: Dec 2011
Posts: 144
Likes: 10
2008 R320 CDI, 2006 smart fortwo cabrio, 1983 240D, 1982 300SD, 1980 300SD
Short answer probably no. It is not simple. Sometimes the turbo was unique to each model (OM642) and there are part numbers for each. Other times it was ecm tuning was different. Location of certain components.
Question is, do have the time to make it work? It most likely will work but with a lot of time spent swapping unique parts back and forth (engine mount arms, accessories, sensors, harnesses).Sometimes this can add 20-30 hours to the job and if your paying a shop forget it.
Reply
Old Sep 25, 2019 | 09:01 PM
  #3  
bbspoolside's Avatar
Member
15 Year Member
Liked
 
Joined: Mar 2007
Posts: 144
Likes: 19
2007 Gl450 2006 cls55
Yes it will fit the ml and r class share the same basic floor pans
Reply
Old Sep 27, 2019 | 11:02 AM
  #4  
JPAMotorsport's Avatar
Thread Starter
Newbie
 
Joined: Oct 2017
Posts: 3
Likes: 0
r350
So I looked at the ML pan vs the R pan it certainly would require swapping the whole lower aluminum housing and metal pan section. It is just an expensive gamble bidding on a wrecked ML if there are larger complications. #hatingmyrclass 🙄
Reply
Old Oct 1, 2019 | 01:47 PM
  #5  
bbspoolside's Avatar
Member
15 Year Member
Liked
 
Joined: Mar 2007
Posts: 144
Likes: 19
2007 Gl450 2006 cls55
Same oil pans I’ve done the swap previously
Reply

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 02:10 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke

Slideshow: The 2027 update adds a fully digital steering system, revised styling, and potential charging upgrades as the company looks to revive interest in the luxury EV.

By Verdad Gallardo | 2026-04-04 10:24:38


VIEW MORE