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 04-26-2013, 05:10 AM
Registered User
 
Join Date: Feb 2007
Posts: 81
1971 250C Exhaust Dampers?

The above car runs well around town with its original twin zenith carbs, but boggs down at highway speed. Rather than mess with further carb adjustments, rebuilds, etc, I bit the bullet & bought JAM Engineering's Weber carb kit.

Upon removing the Zeniths, I noticed two "dampers" on each of the ports in the exhaust manifold. It appears the dampers are supposed to be opened by bi-metalic coils as the engine warms.

Both coils are broken & it appears the forward damper is seized in the open position, while the aft one moves freely & may have been open and/or closed as I drove.

Dos anyone have experience with these things & how they affect performance?
Attached Thumbnails
1971 250C Exhaust Dampers?-exhaust-dampers.jpg  
Reply With Quote
  #2  
Old 04-26-2013, 08:03 AM
Registered User
 
Join Date: Jun 2005
Location: Chicagoland
Posts: 1,248
That's a common problem on these cars. Check out this link.

http://www.peachparts.com/shopforum/vintage-mercedes/237863-1967-250s-exhaust-flaps-frozen.html

On mine, I ended up getting a piece of steel to close off the heat risers.
Reply With Quote
  #3  
Old 04-26-2013, 08:17 AM
Registered User
 
Join Date: Jan 2006
Location: Tucson, AZ
Posts: 4,551
Alternatively, post #6.

http://www.peachparts.com/shopforum/vintage-mercedes/238292-m115-t-b-i-conversion.html
__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now
Reply With Quote
  #4  
Old 04-26-2013, 09:40 AM
Registered User
 
Join Date: Feb 2007
Posts: 81
Smile

Thanks, fellas. I'll leave the forward heat riser sealed shut (San Francisco) & secure the aft in the same position.
Regards, C
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 12:35 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page