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  #1  
Old 05-02-2003, 09:19 AM
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Join Date: May 2003
Location: cape cod
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87 300td head swap

So, here I am with a suspect head on my 603 engine (casting # 603-016-14-01 ) and wondering if I should attempt installing a 90's era 350 head. I have a complete 350 head available still in a vehicle. Good idea? What must be swapped, or can the thing go on complete? Should I upgrade to the new glow plugs and controller at the same time? BTW, how heavy and awkward are these heads?

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Old 05-02-2003, 01:11 PM
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smoke gets in your eyes
 
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I tink the biggest hitch will be the injectors. I don't think you can fit the .96x injectors in the .97x prechambers and I don't think you can run .97x injectors with a .96x pump.

There are other things to consider such as whether a .96x engine will run properly with a .97x cam.

I'm not sure if afterglow is all it's cut out to be considering that it shortens the life of glow plugs and glow plugs are a bunch of work to replace on a turbo 603.

Sixto
91 300SE
87 300SDL
83 300SD
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  #3  
Old 05-02-2003, 01:15 PM
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smoke gets in your eyes
 
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Oh, swapping the heads is otherwise straightforward. A hoist would be nice but I managed with a second pair of hands.

I don't know if the oil fittings and exhaust pipe of the .96x match up to the .97x turbo.

Sixto
91 300SE
87 300SDL
83 300SD
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Old 05-03-2003, 02:26 AM
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I'll Go Upside Your Head!
 
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engine head swap

Would a cylinder head from a 1987 300SDL just bolt onto a 1987 300D-Turbo? What would have to be changed/adjusted?
Thanks
David
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  #5  
Old 05-03-2003, 03:56 AM
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smoke gets in your eyes
 
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87 300SDL head to 87 300D should be a straight swap. You should check the IP timing when you're done but there probably isn't too much variation in cam to IP timing to bother... assuming the 300D IP timing was on spec to begin with.

See, I can contribute to this thread without saying it

Sixto
91 300SE
87 300SDL
83 300SD
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  #6  
Old 05-03-2003, 09:35 AM
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My hope was to solve the bad head problem with minimum cost and complications - and the availability of this 350 head sounded like something worth considering - BUT if prechamber, exhaust manifol, camshaft , and oil line fit are uncertain, I might be better off persuing other options. Which years and models are a direct replacement with the good (improved) heads?
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  #7  
Old 05-03-2003, 10:05 AM
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Location: Brentwood, TN
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check out this site; guy did a 300/350 head swap

http://www.meimann.com/images/mercedes/head_gasket/

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