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Old 08-02-2005, 05:54 AM
kmaysob's Avatar
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ac condensor

ive been pondering an idea for a while. ive heard that when you convert to 134a you have to change to a bigger condesnor to get cool enough air. well has anyone thought/tried to install a condensor for 134 and still use r12? that would blow hella cool air. im half tempted to do this when i rework my ac system. any opinions?

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Old 08-02-2005, 07:46 AM
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Increasing Air Conditioner Reserve Capacity ?
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Old 08-02-2005, 09:39 AM
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Once you are cooling well enough, any further cooling would only freeze the condensor. If you lived in an absolute equatorial climate it might be necessary, but would be wasted effort most anywhere else.

Good luck,
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Old 08-02-2005, 10:22 AM
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LarryBible and Leathermang are our house experts....they have volumous postings in the archives on this subject.....its very good reading, trust me.
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Old 08-02-2005, 10:39 AM
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Larry, The guy is in Mesa Arizona and has been experiencing record temperatures for a couple of weeks... I think it was a perfectly legit question...
Our old diesels were, even when new, only rated ' acceptable' in terms of Air Conditioning.... being in a severe climate like our Southwest would certainly justify thinking about maximizing the efficiency of the stock product.
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Old 08-02-2005, 11:01 AM
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I was viewing the site recently and noticed that they carried parallel flow condensors. But I did not verify if they carried one compatible with MB's. If you contact them, they may have someone who has done this mod. They are also near your neighborhood and can understand why you are looking for maximum a/c capacity.

84 300SD 350K+ miles ( Blue Belle )
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Old 08-02-2005, 12:09 PM
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vent temps with r-134a w123
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Old 08-02-2005, 05:45 PM
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The main downside to a parallel condenser that I have read about is that in the event of a black death of a compressor, it will be necessary to replace the condenser b/c it will be impossible to flush all the particles out of a parallel flow the way you can with a serpentine OEM. That is why I did not go to a parallel this past weekend when replacing my condenser.
1984 300SD 326,997 miles and counting . . . No wait, my odometer is still dead
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Old 08-02-2005, 06:45 PM
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Parallel flow condenser

I put one into my 123 diesel...I'll post some pics tommorrow. You do have to make custom hoses to reach the connections on the condenser. As far as mounting, its very the top a couple of screws and nylon spacers, and at the bottom, a couple of "Stanley" L-shaped brackets and screws.

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Old 08-02-2005, 07:53 PM
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There are aftermarket inline filters which Larry and I have suggested is good insurance when replacing a compressor...(upstream of the compressor )
but you could also put one between the compressor and the condensor if you get a P-Flow... to avoid having to replace in case of compressor failure...

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