So this will be my official progress thread as I attempt to make the best A/C system possible using only factory parts.

My 300TE is currently switched to r134a and it just doesn't cut it out here in Arizona.

Parts to upgrade:
Old 15cc to New 17cc Denso Compressor
Larger Condenser
Twin fan assembly
New Drier
R12 refrigerant

So basically, Mercedes used a larger condenser, larger compressor and better twin fan design to improve on the shortcomings of factory r134a system.
If I upgrade to that design, BUT use R12. How could it possibly get any better, right?

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So went to the junkyard today and found a complete assembly with working fans (tested using portable battery).



The Fan and condenser should be easy....The only problem I think I will run into will be with the different placement of the hoses as shown below:

Early Model:
[IMG]https://www.***************/secure/PartImages/1248301770.jpg[/IMG]
Later Model:
[IMG]https://www.***************/secure/PartImages/1248301670NIS.jpg[/IMG]

Compressor Hose:
Early Model:

Later Model:


Does the 17cc compressor REQUIRE the later hose, or will the original one fit? Anybody know?

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2008 Black Mercedes E350 4Matic Sport - 131k
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2003 Gray Mercedes ML350 - 122k