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Old 12-07-2006, 09:41 PM
Registered User
Join Date: Oct 2004
Location: Gloucester,Ma.
Posts: 6
300TE 124 Head Gasket

The head gasket on my 1992 124 300TE is acting more and more like the British rust proofing system and is time for the change. I have found some good info on the site but have a few questions. 1) What would be the best manual aside from the official Mercedes Books IE Bentley, Hayes, Chilton etc. or a CD ROM?
2) Do I: clean both surfaces well and put it back together, machine the face or the full enchilada of a rebuild. I opt for the first for now. The weathers getting cold in New England and my work shop is colder. The spring my bring the rebuild, but for now...
Thanks Ric Doucette

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Old 12-07-2006, 10:34 PM
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Join Date: Jan 2005
Location: St. Louis Missouri
Posts: 473
I have a 94 E320 wagon (104.992 engine) with about 190,000 miles. I recently did the cylinder head project--the whole enchilada drill as you described. The machine shop that rebuilt the head commented that nothing was out of spec. Guides, lifters, cams--everything was good. They said it had a very slight warp which was corrected by resurfacing. They also cleaned it, (lots of carbon build up) reseated the valves and put new seals in. I bolted it all back together and it runs great. The machine shop bill was $340.00.

If I had it to do over, I would probably do the "whole enchilada drill" again although I'm not sure it is really necessary. I plan to keep driving this car for many years so that probably influenced my decision. I'm sure if I hadn't done the rebuild I would constantly wonder if I should have.....
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Old 12-08-2006, 09:42 AM
I told you so!
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,838
It depends on the mileage. JMS did it at 190K, and was mildly surprised how good a shape it was in, and how inexpensive the reconditioning was. If you have low miles you can probably forego the reconditioning. At the very least, get a straight edge and check the faces for flatness once the head is off.
95 E320 Cabriolet, 153K
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Old 12-08-2006, 09:55 AM
david s poole
Join Date: Mar 2005
Location: dallas
Posts: 1,822
if you pull the head and don't send it to a machine shop to have it reworked it's like going to the doc for a check up and doing an about face at the door as you tell yourself "i must be okay because i made it here" if you go to that much trouble fix it right.
David S Poole
European Performance
Dallas, TX

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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Old 12-08-2006, 10:11 AM
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Join Date: Dec 2000
Location: AL
Posts: 1,219
You asked about manuals...


click here for 104 Headgasket Replacement info
2012 E350
2006 Callaway SC560
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Old 10-12-2010, 08:11 PM
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Join Date: Oct 2010
Posts: 4
Old thread, but I too have a 92 300te in new England and am prepping to do this fix.. Did you go through with it?
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Old 10-12-2010, 11:10 PM
ps2cho's Avatar
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Join Date: Jun 2006
Location: Chandler, Arizona
Posts: 3,523
Here is all the information you should need

2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k
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