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 ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 09-26-2006, 11:00 PM
Registered User
 
Join Date: Sep 2006
Posts: 12
Angry Plastic Radiator Neck Failure w124

hello,
not a good day for me today, the plastic radiator neck cracked and i lost 1/4 of my coolant. thanks god i wasn't on a highway. the good thing that it cracked in the middle so i still have about 1/2 inch extension to put a hose on. I knew that it's a common problem with older Behr radiators and there is a kit sold here http://www.**************.com/store/item.php?item=Radiator%20Neck%20Kit to reinforce the neck with a cooper pipe. I bought this car about 3 months ago, and i actually did check the neck after i found out about this issue. Previous owner also knew about this problem and did reinforce it, unfortunately just with epoxy and no pipe, and it cracked open today...


[IMG]http://www.**************.com/alerts/alertradneck2.jpg[/IMG] (not an actual picture)


i don't have enough funds to replace a radiator, so i'm just going to install a little pipe, what is the diameter of the inner pipe of the neck? and will copper be a good choice of metal?
Reply With Quote
  #2  
Old 09-27-2006, 12:35 AM
dakota's Avatar
Moof !
 
Join Date: Jul 2000
Location: Seattle WA USA
Posts: 469
Over ther years, here's what I have gleened about this problem...
1) Make sure you are using the proper anti-freeze/coolant (MB or G-05).
2) Try to find a wider clamp and don't fuss with it. I swear that half the problems arise because people are loosening and tightening that clamp, and they overtighten it.
3) Make sure your motor mounts are in good shape. If your engine is rocking and rolling, it puts undo pressure on that joint.
4) Breakage is inevitable (usually around 100,000 miles and 10 years from what I've seen). Plan for it. Deal with it.

As for trying to repair it, I think I'd try to find a plastic reinforcing pipe (as its thermal coefficient of expansion will be closer to that of the radiator plastic) and use a high quality epoxy.

Sorry, I don't know what the inside diameter of the rad pipe is. When you get ready to repair it, take the broken piece to the hardware store to find a good fit. Make sure to rough up the old and new surfaces and makes sure they are absolutely clean before bonding.

Save up for a new radiator and get it replaced as soon as possible. You don't want to break down somewhere where it gets real difficult to get home. They aren't that expensive and you can do the job yourself.

Good luck!
__________________
Steve
1992 300CE Sportline Sophie
1990 300E Emma - in the family
1979 240D Josephine - sold, but not forgotten
2004 Pacifica AWD
http://web.mac.com/dakota/Mercedes/Home.html
Reply With Quote
  #3  
Old 09-27-2006, 12:47 AM
wbain5280's Avatar
Registered User
 
Join Date: May 2001
Location: Northern Va.
Posts: 3,386
Replacement radiators come with a reinforced neck. Check around for a used one.
__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.
Reply With Quote
  #4  
Old 09-27-2006, 07:18 AM
Registered User
 
Join Date: Aug 2002
Location: Southeastern PA
Posts: 2,891
andrei, instead of a temporary Rube Goldberg fix bite the bullet and replace the radiator. It will need to be replaced eventually and you'll avoid getting stranded somewhere at the worst possible time. You can buy a new Behr radiator for your 300E at benzautoparts.com for $182. Consider replacing the thermostat and be sure to use either MB coolant or Zerex G-05.
__________________
Fred Hoelzle
Reply With Quote
  #5  
Old 09-27-2006, 08:55 AM
BENZ-LGB's Avatar
Strong, silent type
 
Join Date: Apr 2001
Location: Southern California
Posts: 1,663
Quote:
Originally Posted by Ferdman View Post
andrei, instead of a temporary Rube Goldberg fix bite the bullet and replace the radiator. It will need to be replaced eventually and you'll avoid getting stranded somewhere at the worst possible time. You can buy a new Behr radiator for your 300E at benzautoparts.com for $182. Consider replacing the thermostat and be sure to use either MB coolant or Zerex G-05.
He said he did not have the funds to replace the radiator.

I think that a temporary fix should work until he has the funds for a replacement.

I think your idea might work andrei, just make sure that you get the right kind of epoxy, clean the parts, so the epoxy will hold, and let it cure.

Good luck.

When you finally get your new radiator, then do all the other things that have been suggested here.

One suggestion...have you checked wiht a dismantler yard? Maybe you can find a good used one for a little cash outlay.
__________________
Current Benzes

1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"

Res non semper sunt quae esse videntur

My Gallery

Not in this weather!

Last edited by BENZ-LGB; 09-27-2006 at 01:00 PM.
Reply With Quote
  #6  
Old 09-27-2006, 12:39 PM
Mike Murrell's Avatar
Registered User
 
Join Date: Feb 2000
Posts: 2,332
Quote:
Originally Posted by wbain5280 View Post
Replacement radiators come with a reinforced neck.
I bought a new Behr a few years ago - OEM and it did not have the reinforced neck. Digging around, I leaned that Behr had stopped including the insert. That's what I was told by a couple of suppliers.

Don't be surprised if you buy a new Behr that doesn't have the reinforced neck. I'd like to believe you could still get one and I'd bet a buck you might have to buy it from an MB dealer.

Maybe someone here has a Behr source that still features the reinforced neck?
__________________
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"
Reply With Quote
  #7  
Old 09-27-2006, 01:21 PM
Registered User
 
Join Date: Mar 2001
Location: Boston, MA
Posts: 108
New Behr Radiators DO Have Reinforced Neck >

I just bought one for Phil for about $225 and the necks have the metal insert at the neck. You can buy one at the dealer for $265 if you are in a big hurry, but I got mine delivered to my door the day after I ordered it. In my case the radiator neck had not failed (it was made in 2001 - I guess a replacement for the original on my 1994 E320 Wagon) but the (steel?) clamps that hold the plastic tanks to the sides were seriously corroded and at the lower passenger side corner coolant had started to weep past. The new radiator seems to have clamps made of the same aluminum as the radiator so that should not happen again. Note that if you also replace the upper and lower hoses and buy two gallons of Mercedes coolant the total bill will run to over $310.
__________________
Chip Johnson
Reply With Quote
  #8  
Old 09-28-2006, 07:35 PM
Registered User
 
Join Date: Sep 2005
Posts: 225
Nissen brand MB replacement radiators that are sold by some shops also have the reinforcing steel tube insert -

bnc
Reply With Quote
  #9  
Old 09-28-2006, 09:57 PM
Strife's Avatar
General Purpose Geek
 
Join Date: Apr 2004
Location: KY USA
Posts: 2,238
Quote:
Originally Posted by dakota View Post
2) Try to find a wider clamp and don't fuss with it. I swear that half the problems arise because people are loosening and tightening that clamp, and ...
I beleive this, and another 35% are from bad motor mounts tugging at it when the engine bounces around (on a 107, that upper hose is really tight).
__________________
86 560SL
With homebrew first gear start!
85 380SL
Daily Driver Project

http://juliepalooza.8m.com/sl/mercedes.htm
Reply With Quote
  #10  
Old 09-28-2006, 10:45 PM
Registered User
 
Join Date: May 1999
Location: Toronto,On,Canada
Posts: 280
I fixd mine temporarily with a rubber hose inside bridging the upper hose and the inside of the neck.,till I got a replacement few months later (from the USA where parts are cheaper), Nissen brand radiator,cheaper than Behr.
__________________
Tom 2010 C250 4-matic Sport (Canada)
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 08:50 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page