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  #1  
Old 12-21-2004, 02:36 PM
300sdlguy's Avatar
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Join Date: Dec 2004
Location: Sioux Falls, SD (Dallas Tx)
Posts: 374
Need New Head...where's Best Place To Buy???

Not having to replace a 603 head, and being new to this sight I figured I'd ask what the latest news is on the best place to get the best head for the best price and any other information I need to know before making a purchase. Are the heads going to come "ready to drop in" or will they need adjustments my non-Mercedes tool owning mechanic will have to make? Thanks for any and all advice in advance.
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Mercedes Fleet:
2004 CL600 Designo Espresso SPORT
2004 S600 Designo Espresso SPORT/Lorinser Pkg.
1999 S320
1988 300TE
1972 280SEL 4.5
Diesel Fleet:
2014 GL350 Blutec
1987 300SDL Blk/Blk 4 place seating #18 head
1987 300SDL Smk Slv/Burgangy #17 head
1986 300SDL Blk Pearl/Palomino #14 head w/ 280K
1984 Lincoln Mark VII Fact BMW Turbo Diesel
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  #2  
Old 12-21-2004, 04:52 PM
BusyBenz
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You could ask Phil here at Fastlane, the forum sponcer, or you could try Adsitco.com, or maybe consider a used head.

New, they come bare, and if your going to reuse your precombustion chambers you will have to modify them for the new head.

Try the search here on OM603 heads or cracked 603 heads and you will find a trove of info....BB
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  #3  
Old 12-21-2004, 07:45 PM
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Join Date: Nov 2000
Location: SW Chicago Suburbs, IL
Posts: 264
I was advised to contact Metric Motors for a replacement head for my 603. I did just that a few years ago and ended up with a NEW (not rebuilt) head with new valves and springs for around $2200. Excellent results so far.

Too bad I can't say that about my experience with the folks that provided the labor.

My car runs super now though.

Good luck.
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Sold: 1987 MB 300SDL, 320k miles, Astral Silver, Blue Leather, all books and records from day one.

Totalled: 1998 VW Jetta TDI, 488k miles, Classic Green/Gray Leather, loaded, E-Codes, "Slightly" modded, "Slightly" faster than stock, arrived 11/07/1997.

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  #4  
Old 12-22-2004, 10:59 AM
300sdlguy's Avatar
Diesel Poor
 
Join Date: Dec 2004
Location: Sioux Falls, SD (Dallas Tx)
Posts: 374
Called Metric motors: This is what they stated

NEW HEAD: $1,700.00 (add $450.00 for all new valves, springs and seals installed). Total $2,150.00

REBUILT: all the machine work plus new guides, seals, springs assembly $1,750.00

Either version does not include the prechambers, camshaft, or lifters.

Can the prechamber mod be done my a regular mechanic? What other costs will I encounter?

Is the extra $400 worth it for the "new" head?
__________________
Mercedes Fleet:
2004 CL600 Designo Espresso SPORT
2004 S600 Designo Espresso SPORT/Lorinser Pkg.
1999 S320
1988 300TE
1972 280SEL 4.5
Diesel Fleet:
2014 GL350 Blutec
1987 300SDL Blk/Blk 4 place seating #18 head
1987 300SDL Smk Slv/Burgangy #17 head
1986 300SDL Blk Pearl/Palomino #14 head w/ 280K
1984 Lincoln Mark VII Fact BMW Turbo Diesel
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  #5  
Old 12-22-2004, 12:37 PM
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300SDLguy,

You should have them put in the prechambers too. That way you will have ones that fit OK installed. I think I would go for a new head and make sure its a 17 or higher, preferable higher.

If you get a rebuilt head, also make sure it is a 17 or higher. Its the 14 that's the problem one. No sense putting on a head that might crack like the 14s do.

Ask Metric if they will use your valves and springs to save some money.

P E H
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  #6  
Old 12-22-2004, 12:58 PM
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Agree with P E H - go for the new head, preferably a -22, and see if they can use your existing valves and springs. Otherwise, everything seems right. Best of luck.
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'04 ML500 - 53k, Inspiration Edition, Desert Silver
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  #7  
Old 12-22-2004, 03:58 PM
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Where on the head is the Number located?
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  #8  
Old 12-22-2004, 04:03 PM
BusyBenz
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Quote:
Originally Posted by rdanz
Where on the head is the Number located?
Numbers are cast into the head below the second intake port back from the front of the head. A sequence of numbers will include a single number such as 14 or very rare 15 or 17 or 22. Try to get a 22 head as this is the most recent upgrade. There might be some heads with numbers between 17 and 22 also. Doubt you could get a new 14, 15, but there might be some new 17's around, but doubt that too! BB

Last edited by BusyBenz; 12-22-2004 at 04:09 PM.
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  #9  
Old 12-23-2004, 01:50 AM
300sdlguy's Avatar
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Location: Sioux Falls, SD (Dallas Tx)
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603 016 18 01 model "18" ????

I found a head from a 1991 350SDL its rebuilt and $1,200, but the shop says its has the above listed number 603 016 18 01. In all my searching I have not seen anyone mention that there is an "18" model head. Does anyone know it one exists, does the price seem okay? There is a 90 day warranty but only if I replace my radiator and waterpump.
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Mercedes Fleet:
2004 CL600 Designo Espresso SPORT
2004 S600 Designo Espresso SPORT/Lorinser Pkg.
1999 S320
1988 300TE
1972 280SEL 4.5
Diesel Fleet:
2014 GL350 Blutec
1987 300SDL Blk/Blk 4 place seating #18 head
1987 300SDL Smk Slv/Burgangy #17 head
1986 300SDL Blk Pearl/Palomino #14 head w/ 280K
1984 Lincoln Mark VII Fact BMW Turbo Diesel

Last edited by 300sdlguy; 12-23-2004 at 11:04 AM.
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  #10  
Old 12-23-2004, 07:41 AM
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I have never heard of a 1991 300 SDL. That could be the problem. I believe the 1991's were 350 SDL's which is surly a different head.
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  #11  
Old 12-23-2004, 09:46 AM
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I believe that head should be fine. I think the heads on the 300s and 350s are all the same.

I just looked at Adsit. You can get a rebuilt head for $1615.

http://www.adsitco.com/catalog/productdetail.asp?ID=6252
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  #12  
Old 12-27-2004, 09:40 PM
300sdlguy's Avatar
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I found a rebuilt head for $945 including shipping. It is from a 1991 300SDL 3.5 liter. Seems like a decent deal, but before I purchase, can anyone tell me exactly what modifications are needed, I understand the prechambers need to be milled a bit, but not sure about other mods. and their respective difficulty for a mechanic who has never worked on a 300SDL diesel before? Am I going to have to purchase a prechamber removal tool and other tools?
__________________
Mercedes Fleet:
2004 CL600 Designo Espresso SPORT
2004 S600 Designo Espresso SPORT/Lorinser Pkg.
1999 S320
1988 300TE
1972 280SEL 4.5
Diesel Fleet:
2014 GL350 Blutec
1987 300SDL Blk/Blk 4 place seating #18 head
1987 300SDL Smk Slv/Burgangy #17 head
1986 300SDL Blk Pearl/Palomino #14 head w/ 280K
1984 Lincoln Mark VII Fact BMW Turbo Diesel

Last edited by 300sdlguy; 12-28-2004 at 11:06 AM.
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  #13  
Old 12-28-2004, 09:57 AM
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What's the number on the head? As Alan stated earlier, there is no such thing as a '91 300SDL, so it's a head from a 350SDL.
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'87 300SDL sold
'99 C280 Sport sold
'85 190E 2.3 sold
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  #14  
Old 12-28-2004, 11:03 AM
300sdlguy's Avatar
Diesel Poor
 
Join Date: Dec 2004
Location: Sioux Falls, SD (Dallas Tx)
Posts: 374
It was a typo, just used to typing, saying and having a 300SDL. I DO understand the 1990-91's are the 3.5L 350 SD & SDL's .

According to the seller, the number is 603 016 18 01. I asked if anyone knew of an "18", and if this number could be correct, but nobody responded, except to tell me there wasn't a 300SDL in 90 or 91.
__________________
Mercedes Fleet:
2004 CL600 Designo Espresso SPORT
2004 S600 Designo Espresso SPORT/Lorinser Pkg.
1999 S320
1988 300TE
1972 280SEL 4.5
Diesel Fleet:
2014 GL350 Blutec
1987 300SDL Blk/Blk 4 place seating #18 head
1987 300SDL Smk Slv/Burgangy #17 head
1986 300SDL Blk Pearl/Palomino #14 head w/ 280K
1984 Lincoln Mark VII Fact BMW Turbo Diesel
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  #15  
Old 12-28-2004, 11:05 AM
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Hmmm....in 4 years of following 603 head related threads, I've never heard of an -18 head, but this could be the first.
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'87 300SDL sold
'99 C280 Sport sold
'85 190E 2.3 sold
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