Mercedes 300 sel 5 speed manual swap diy - Mercedes-Benz Forum
 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 08-12-2019, 07:02 PM Thread Starter
BenzWorld Junior Member
 
Chris Penovatz's Avatar
 
Date registered: Oct 2017
Vehicle: 1991 300 sel
Location: monterey
Posts: 5
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Mercedes 300 sel 5 speed manual swap diy

Hello forum members. I am a huge enthusiast of the w126 series cars having owned 4 of them. It all started with my 1991 300 sel. I've had the car for a long time and finally have the parts to swap it to a 5 speed manual transmission. They where never sold in the usa in SE or SEL variants. Parts car was a euro imported 300 se. I pulled everything trans related as you need all of it to fit into the SEL
ianrandom likes this.
Chris Penovatz is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 08-12-2019, 08:30 PM
BenzWorld Elite
 
Fonzi's Avatar
 
Date registered: Jun 2010
Vehicle: 450slc5.0cab 280sl5sp 280se4.5 500seAMG +250seStkW108 350sl4spdX3 500secEuro
Location: Philadelphia Area
Posts: 21,659
Mentioned: 50 Post(s)
Quoted: 2358 Post(s)
Garage
Was the 300se a manual trans car? I think the rarest part is the dual mass flywheel with the crank position sensor pickups. Iíve got a 1985 190e 5-speed trans, two 280se 4-speed cars, and a 300se automatic and have to admit that trying to make the rust free 300se into a manual trans car has crossed my mind. The flywheel is the only part I donít have to make my swap work. I believe there are ways to do it without it though.
Fonzi is offline  
post #3 of 5 (permalink) Old 08-12-2019, 09:32 PM Thread Starter
BenzWorld Junior Member
 
Chris Penovatz's Avatar
 
Date registered: Oct 2017
Vehicle: 1991 300 sel
Location: monterey
Posts: 5
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
I aim to document the whole process of manual swapping a usa 300 se or sel mercedes but this will apply to the 280 and the w124 class as well.
You will need the following

5 speed manual trans for m103 engines (6 cylinder only)
3 w126 spec shift rods
W126 spec shifter assembly
W126 spec clutch and brake pedal assembly
Any 6 cy m103 dualmass flywheel
Clutch disk and pressure plate
Pilot bearing and throwout bearings
Any automatic trans kickdown plug (manual reverse light)
Shift linkage clips
Plugs for auto cooler line fitting in radiator
Brake fluid reservoir (pre molded clutch feed on all of them)
Mercedes manual gearbox oil
New shift bushings
New shifter assembly bushings
W126 spec manual transmission mount
Front driveshaft from w126 300se
(Or have existing shaft extended)
New driveshaft bearings and carrier
Chris Penovatz is offline  
Sponsored Links
Advertisement
 
post #4 of 5 (permalink) Old 08-12-2019, 11:04 PM
BenzWorld Elite
 
vdubpower's Avatar
 
Date registered: Nov 2003
Vehicle: 1985 500sel and 500sec 2012 E63 1989 Porsche 911
Location: So-Cal
Posts: 4,908
Mentioned: 13 Post(s)
Quoted: 569 Post(s)
thats awesome chris....hey we met at the bohnams tent last yr in monterey...will u be at the events this yr...
vdubpower is offline  
post #5 of 5 (permalink) Old 08-13-2019, 04:21 AM
BenzWorld Elite
 
Date registered: Nov 2002
Vehicle: '82 500sec euro, '95 Ford F150
Location: West Palm Beach, Fl
Posts: 1,545
Mentioned: 3 Post(s)
Quoted: 150 Post(s)
Just FYI, do t go gaga over the dual mass flywheel. Its a total overkill on a straight 6 that’s already a super smooth engine by it’s design. It’s significantly heavier than a standard flywheel, and much more expensive.
Unless you’re a complete doofus with clutch applications, you’ll be happier with the standard clutch.
Dual mass is great for engines that are not as smooth, ie 4 bangers and diesels.
Great project. Good luck!
ianrandom likes this.
roadhouse is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W126 S,SE,SEC,SEL,SD,SDL Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome