Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Vintage Mercedes Forum

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-29-2022, 10:32 PM
Registered User
 
Join Date: Nov 2014
Location: Las Vegas & N. Cal
Posts: 347
Motor swap SE 2.8 TO S 2.8 Motor

Can I use a 280 S Motor in a 280 SE ( Fuel Injected ) Car ?
does this require changes if so ?

Am thinking to use a good used 280 S motor in a 280 SE 2.8 Car

Car is a 1970 SE *** and the Motor is a 68 or 69 280 with dual Carbs
can just run a hot lead from a ballast resistor to the Distributor on the 280 Carb motor .

******

I am thinking to do this perhaps until I rebuild or find another 280 SE Motor
( the SE Motor needs a major Rebuild )



Thanks all

Reply With Quote
  #2  
Old 10-29-2022, 11:27 PM
Registered User
 
Join Date: Feb 2011
Location: Modesto CA
Posts: 4,086
The feed pump in the SE chassis is more than enough; a pressure regulator may be in order.
Use the complete ignition system from the SE: distributor, coil, resistors, & switch gear (if equipped).
Reply With Quote
  #3  
Old 10-30-2022, 07:38 AM
Registered User
 
Join Date: Nov 2014
Location: Las Vegas & N. Cal
Posts: 347
Thanks Frank :
I was thinking to by Pass the Low ( rear by tank ) Pressure Fuel Pump
but yes with a pressure regulator that should work .
Or I could by Pass that pump and just use the Manual Pump on the Motor .


The Distributor is different on the SE . Mounts different / Has a Gear Drive I think from the front of it to drive the injection pump i guess .


But I don't see why I can't just use the distributor on the 280 Motor

I think its a 68 or 69 Motor says 280 on the head big cast #'s
with no letters after that


The 1970 Fuel injection Motor says 280 SE on the Head ( Drivers side rear of head below spark plugs #'s same place both Motors )

Car was sitting in Fresno ca last 12 or 13 years has Zero Rust not far from your area .
Reply With Quote
  #4  
Old 10-30-2022, 11:04 AM
Registered User
 
Join Date: Feb 2011
Location: Modesto CA
Posts: 4,086
Quote:
Originally Posted by aluminum View Post
The Distributor is different on the SE . Mounts different / Has a Gear Drive I think from the front of it to drive the injection pump i guess .

But I don't see why I can't just use the distributor on the 280 Motor
The points in the distributor of the carburated engine will serve as the trigger, just as the points in the injected engine do. Retain all of the installed ignition system that is in the SE chassis.
Reply With Quote
  #5  
Old 10-30-2022, 12:33 PM
Registered User
 
Join Date: Nov 2014
Location: Las Vegas & N. Cal
Posts: 347
Quote:
Originally Posted by Frank Reiner View Post
The points in the distributor of the carburated engine will serve as the trigger, just as the points in the injected engine do. Retain all of the installed ignition system that is in the SE chassis.
So You Think I can use the " Carbureted Motor's Distributor Then but all the rest of the 1970 SE ( fuel injection ) original ignition Gear / ballast resistor
Coil / wiring Etc . Yes that should work fine i think

Thanks I was hoping this would work.


The Dual Carb Motor has been sitting but inside and it turns so I plan to add some ATF to the Cylinders and check the compression on Wednesday / Seller states the Motor runs good and I believe him . Car was backed up with DMV Fees so he parted it out .

However I think I well pull the Oil Pan and check the Lower ends before installing should only take an Hour or 2 and I can clean it out at the same time . Bearings > Rod & Main , Oil Pump Screen Bottom side Cylinder walls with Piston Up
Reply With Quote
  #6  
Old 10-31-2022, 08:43 PM
Registered User
 
Join Date: Nov 2020
Location: Hermosa Beach
Posts: 81
Besides what has been covered, the SE likely has an oil cooler. The line to the oil cooler run from the oil filter housing. You can not use the oil cooler or use the lines from the SE.
Reply With Quote
  #7  
Old 11-01-2022, 12:54 PM
cth350's Avatar
Registered User
 
Join Date: Dec 2000
Location: Long Island, NY
Posts: 4,357
All the swaps suggested so far should work fine.

You'll also discover the down-pipes on the exhausts are different. You are in a warm enough climate to keep the carb'd intake and discard the carb'd exhaust. That or get the 280S exhaust system.

I doubt the 280S and 280SE transmissions are interchangeable from the perspective of shift points and their reaction to the engine load. Somebody else would have to comment on that. I would stick with the 280S transmission if feasible rather than find out that they don't swap well. The 280S drive shaft and transmission are the "old style". If the 280SE is old enough, the tail of the transmission will look the same and the 280S transmission will go in nicely. If the 280SE is a later version, the transmission tail will look different and the drive shaft front piece is different. If the 280S driveshaft is available, just use that to make the swap. The other way to do it is find an M130V transmission from a 250/8 or 280/8.

-CTH

Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 11:38 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page