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#1
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Best free improvement for the 300D W123
I made a modification to my '85 300D that I think is probably one of the best free mods you can make on the 300D with the automatic climate control system. I totally removed the damper door and vacuum actuator for the center vents in the dash. The dash does have to be off to make this mod but in my opinion it should have been done like this from the factory. If I want the center dash vents closed I will do it manually using the dash vents. You do have to make sure they work. Works great and is free.
I took the vacuum hose that went to the center vent vacuum pod and put it straight to the 1/2 section of the defrost vacuum pod. Not sure what it's purpose is but the system works great.
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Jim |
#2
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Thank you! It's nice to know I'm not alone in my quest for heated air for my hands and face. I wear pants, socks and shoes when I drive, not gloves and a mask :p
I've been contemplating reversing the spring in the center vent pod since you don't have to pull the dash of the SDL to do that much. And as you say there's a lever to manually shut the center vents. Sixto 87 300SDL |
#3
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My main drive was to make sure that I can always make cold are blow out those babies. I don't worry that much about the heat. I did notice that when I want the heat or defrost and those particular damper doors open there is not that much force out of the open center dash vents and again - you can shut it off all the way with the manual shutters. The 126 is the same except for the difference in the way you shut if off.
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Jim |
#4
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engatwork,
can you explain a little more what you did and what your car does now after it. it sounds interesting. i just want to understand what you achieved. do you still have appropriate A/c and heat when you want them??
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PagodaLOVER 1967 230SL, manual 1959 180D, manual |
#5
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I simply disabled my center vents by removing the actuator and plugging the lines. Big hands = big trouble. You need to squeeze in there to get it out (without removing dash).
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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg Last edited by MBeige; 11-30-2005 at 03:58 AM. |
#6
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Now that's almost worth pulling the dash for.
I want only COLD (fresh) air coming from that vent. I'll have to do that for my SDL. I can replace the rubber vacuum pod diaphrams at the same time.
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Michael LaFleur '05 E320 CDI - 86,000 miles '86 300SDL - 360,000 miles '85 300SD - 150,000 miles (sold) '89 190D - 120,000 miles (sold) '85 300SD - 317,000 miles (sold) '98 ML320 - 270,000 miles (sold) '75 300D - 170,000 miles (sold) '83 Harley Davidson FLTC (Broken again) :-( '61 Plymouth Valiant - 60k mikes 2004 Papillon (Oliver) 2005 Tzitzu (Griffon) 2009 Welsh Corgi (Buba) |
#7
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Yes, I like warm air for my hands too, but don't you get a FFFFFFFF sound when you close up the jets?
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#8
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Does this mod allow heated air to come out in the winter and A/C cooled air to come out in the summer? Like most other cars? I have never had one of these appart to see with my own eyes yet.
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Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche |
#9
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Quote:
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1984 300D Turbo - 231k....totalled 11/30/07 RIP |
#10
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Quote:
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Proud owner of .... 1971 280SE W108 1979 300SD W116 1983 300D W123 1975 Ironhead Sportster chopper 1987 GMC 3/4 ton 4X4 Diesel 1989 Honda Civic (Heavily modified) --------------------- Section 609 MVAC Certified --------------------- "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche |
#11
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I wonder if this would work on my SD. And if I could achieve the same effect by plugging the vacuum line to the center pod and wiring the center vent door open?
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'82 300SD - 361K mi - "Blue" "Good judgement comes from experience. Experience comes from bad judgement." listen, look, .........and duck. |
#12
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Ahh, the joys of a "simple" 240D. No vacuum here, all manual slides.
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#13
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Quote:
83/300SD - I have noticed that with either the defrost open or the footwell open then the force of the air making it to the center vents is so insignificant that there is absolutely no noise at this location with them shut in heat or defrost mode.
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Jim |
#14
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I believe there are a few free mods that should qualify.
1: Get the boost up to spec (12-13psi) 2: Disable the EGR and clean out the intake 3: Adjust the ALDA 4: Fine tune the tranny shift points and firmness to your preference 5: Disable the seatbelt buzzer All these are free (from cost, not labor) and will result in a fine-tuned car that you will enjoy driving even more. |
#15
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Quote:
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'82 300SD - 361K mi - "Blue" "Good judgement comes from experience. Experience comes from bad judgement." listen, look, .........and duck. |
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