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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-18-2011, 08:24 AM
Registered User
 
Join Date: Feb 2010
Posts: 12
91 300E Trans Gear question

I have a 1991 300E 3.0L. At 65 MPH the engine is turning approximately 3,000 RPMs. I am getting 25 MPH on highway mileage and 21 combined. Can I have a different top gear installed to drop the rpms and save fuel. This car has amazing torque at high speeds, I am assuming this is so due to the high RPMs. I am not looking for performance. My other cars have similar transmissions w/o overdrives yet still turn at 2,000 RPMs at these speeds. Also how much should this cost to do? Thanks JRR

Reply With Quote
  #2  
Old 11-18-2011, 08:49 AM
oldsinner111's Avatar
lied to for years
 
Join Date: Nov 2008
Location: Elizabethton, TN
Posts: 6,246
You could go with a different rear end.Cost you find rear end and mechanic change $200 to 1000.
__________________
1999 w140, quit voting to old, and to old to fight, a god damned veteran
Reply With Quote
  #3  
Old 11-18-2011, 09:35 AM
ps2cho's Avatar
Registered User
 
Join Date: Jun 2006
Location: Chandler, Arizona
Posts: 3,525
Why spend $1500 to gain maybe 1-2mpg at best?
__________________
2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k
Reply With Quote
  #4  
Old 11-19-2011, 08:45 AM
Registered User
 
Join Date: Jul 2011
Posts: 90
Our 1992 300E - catalytic convertor equipped - managed 70 mph at 3100 rpm ish.
Two more gears would have been useful, however they were designed for the autobahn and left at that. 110mph comes up at roughly 4000rpm on one of those, btw.
I haven't heard of an automatic gearbox upgrade for the M103 engines, not even in Germany.
Reply With Quote
  #5  
Old 11-19-2011, 11:23 PM
sptt's Avatar
Registered User
 
Join Date: Sep 2009
Location: Orange County, California
Posts: 691
I have driven two of the same cars and they both drive identical...high RPMs in 4th gear but smooth and powerful. Seems like it should shift into 5th but never does

Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 06:03 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