I'm interested in a set for my 1984 300D. I'd definitely want a lowering of 25 to 35mm from stock.

Can you post the spring rate(s), unsprung length, and any other specific information about these springs? I'd like to see what these will do to my car in the spreadsheet I have.

Thanks

__________________
Dave

2002 Audi S6 Avant
1983 300D
1984 300D (sold)
1990 560SEL (sold)

What kind of spreadsheet? can you post it if it would be usefull for the rest of us?
John

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I would want a set, but have a ? Im swapping in a four speed, and understand that the front end will raise. Can these be shortened if need be??

shouldnt raise to much... it will raise alot with the motor out though

John,

I'd love to share it. Here is the spreadsheet I developed at the beginning of the year to find how much to cut off springs found at the junkyard to match my specs.

I was planning on using springs from a 126 chassis and cutting them, since many start with thicker wire diameter than 123 springs and will have higher spring rate at the same ride height. I never really set down goals in terms of spring rate adjustment because I learned front springs are not interchangeable from 123s and 126s because of coil diameter. I later learned of Coil Spring Specialties, but was very busy this summer and autumn. I'm honestly not sure what change in spring rate (k) is desired with my 25-35mm proposed ride drop.

Anyway, check it out. The idea was to play with part numbers until a good combination using the F and R curves was found, then cut the springs as desired while maintaining equal F/R ride height change. I found all the data from the W123 and W126 FSM. Changes in ride height with respect to spring length were found here http://www.peachparts.com/shopforum/showpost.php?p=84018&postcount=5. Note this is only developed so far for constant rate springs. Also, I've yet to weigh my car sequentially at a truckstop, so the F/R weight distribution figure is only an estimate .

Have fun!

Attached Files

MB spring calculator.zip (11.1 KB, 78 views)

__________________
Dave

2002 Audi S6 Avant
1983 300D
1984 300D (sold)
1990 560SEL (sold)

Any word on the springs?

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine

It would be really nice to seal this deal by mid January, so that we can have them by Spring break, in march.

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Current Stable:
1994 S500 v140, 210k miles, white with grey.

Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now)
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020)
1992 500E 156k mi sold
etc.

agree with you for sure.. everything is on track as could be.
the communication with vogtland has been for a post-holiday run,
they know that the numbers are there.. definitely, keep you posted.

Any specifications yet?

__________________
Dave

2002 Audi S6 Avant
1983 300D
1984 300D (sold)
1990 560SEL (sold)

im waiting for someone to post pics when these are finally made.. ill make my decsion on how much lower it sits ^_^

I like this post, I want three sets, please, two for 2 240D manuels and a set for a 300 turbo diesel. Thanks, count me in, let me know where to send money, lets do it, Nice...I need some springs

Rudolf

Hey, this sounds interesting, but!!! I recall that I bought some Vogtland springs for my 124 for less then $300.00 retail. I wouldn't mind some on my 123, but if Vogtland can't do better selling by the dozen, hmmmmm.

Keep me posted, but I think there are other (less prestigious but viable) springs available for less.

Ric

Sounds like a good idea, I have a 82 300d.
I would like to see the spring specs, and $300 is definately in my price range. When you get all that info count me in.

Essentials of today's email.. Vogtland in italics, my response back. All productive feedback appreciated.


We presently have the 4 cyl. application designed. 200 - 230 model. I believe that these would only be Grey Market cars.

Designed for the Diesels? 114 chassis Gasoline, 115 chassis Diesels.
The 115 chassis covers models 200/220D through '73, 240D through '75, and 300D through '76.
These springs would definitely work for the 123 240D (4 cylinder 616), with minor modification.


The front rate is 47 N/mm (268 lb/in) and the Rear is 62 N/mm (354 lb/in)

Many thanks for the hard numbers, will definitely be posting these on the forum. Let you know about any feedback.


Most US models were either 6 cyl. or Diesel. We figured that these would be pretty close as far as front load. The big difference would the 4 dr. vs. Coupe. I assume that spring pads could take care of the difference in ride height. We have preliminary design data as well for these. We were targeting 49 - 51 N/mm (285 lb/in) and 64 N/mm (365 lb/in) front and rear respectively.

Some 124 Diesel folks tried using your 6cyl Gasoline application with poor results because of lowered ride height.
It was concluded that this was due to the increased weight of the Diesel engine (5cylinder 602, 6cylinder 603).
There are three different spring pads to change ride height in the rear. Most were interested in a moderate 30-35mm drop.

I need 5 sets of four.None of my cars are really in desperate need,but I'll do them all if they're not outragiously priced.My total number now is three 300cd's but looking at a 240 coupe,and have a fourth 300cd in transit now,out of Southern Texas.I'll be up to five 123's by feb.1st.Love these friggin 123 coupes,especially the 300cd's.