The Forum

Garage => Mechanicals => Topic started by: Mattr on 15 April 2017, 10:10 PM

Title: Suspension Ride Height
Post by: Mattr on 15 April 2017, 10:10 PM
Hey Folks,

Since I bought my 450SE, the front has always sat a bit higher than the back (maybe 1/2"?). I suspected the back was worn out, and took it to a classic car shop today. He took a quick look at the front and the back, and said that while the back was a bit soft, it didn't seem worn out. Has anyone else seen this before? I was contemplating just swapping new shocks and springs into it to see if the problem went away, but I don't want to if it sitting like that is normal.

Oh, and has anyone ever replaced their three speed auto with a four or five speed automatic?

Thanks,
MattR.
Title: Re: Suspension Ride Height
Post by: gf on 17 April 2017, 06:50 PM
Does it have self levelling?
Title: Re: Suspension Ride Height
Post by: ChrilleGr on 18 April 2017, 02:20 AM
It Think its supposed to be slightly higher in the back?.

(https://drive-my.com/media/k2/galleries/2219/1979-Mercedes-Benz-450-SEL-6-9-29.jpg)

Title: Re: Suspension Ride Height
Post by: Mattr on 19 April 2017, 05:45 PM
Quote from: gf on 17 April 2017, 06:50 PM
Does it have self levelling?
My car doesn't have self-leveling. It's a stock 450SE (besides having an M100 motor).
Title: Re: Suspension Ride Height
Post by: robertd on 19 April 2017, 06:32 PM
What do you mean " besides having an M100 motor"?
Title: Re: Suspension Ride Height
Post by: rumb on 19 April 2017, 06:54 PM
A 6.9 is suppose to be 55.5" high at roof, and the wheel well to ground is Front 26" and Rear 25" - though there is debate about these numbers.

The manual calls for measurements off certain suspension components and requires special tools that no one has.


the height of a plain 450 SEL between 1973 and 1980 varied back and forth between 56.1" and 56.3"

Title: Re: Suspension Ride Height
Post by: robertd on 20 April 2017, 01:10 AM
Hey Mattr

If you have a standard 450SE how did you fit the 6.9 motor

did you do it yourself?

some pictures would be great to see.

Cheers Rob
Title: Re: Suspension Ride Height
Post by: Mattr on 20 April 2017, 04:03 PM
Quote from: rumb on 19 April 2017, 06:54 PM
A 6.9 is suppose to be 55.5" high at roof, and the wheel well to ground is Front 26" and Rear 25" - though there is debate about these numbers.

The manual calls for measurements off certain suspension components and requires special tools that no one has.


the height of a plain 450 SEL between 1973 and 1980 varied back and forth between 56.1" and 56.3"
Do you've the wheel well to ground stats for a 450SE? As previously noted, my car is neither a 6.9 nor a SEL.

Quote from: robertd
What do you mean "besides having an M100 motor" ?
I bought this car about three years back: http://www.frankenbenz.com
Since then I've been gathering up parts, making a list of repairs/fixes needed (and handling those I can, currently), and paying off debt so I can buy a house with a two car garage and room for a 1000+ sq.ft. shop (if it doesn't already have one).
Title: Re: Suspension Ride Height
Post by: rumb on 20 April 2017, 04:34 PM

Do you've the wheel well to ground stats for a 450SE? As previously noted, my car is neither a 6.9 nor a SEL.


I would guess about 3/4 of an inch higher than a 6.9 based on roof height.

Title: Re: Suspension Ride Height
Post by: robertd on 20 April 2017, 06:49 PM
I've just measured both my 450sel and my blue 6.9

Floor to top of arch of rear wheel well  on the 450 is 25inches

                                                            on the  6.9  is  24 and 1/2 inches
Title: Re: Suspension Ride Height
Post by: Mattr on 21 April 2017, 10:53 PM
Thanks Robert. I'll compare that to what my front/rears are sitting at, and see if maybe I need to order some springs/struts.
Title: Re: Suspension Ride Height
Post by: Mattr on 10 May 2017, 07:22 PM
Examining it, the back sits perfectly at 25", and the front is at 26". The mechanic I've had looking at the car (there's two repairs I hate: suspension and brakes). Thinks that the previous owner probably had heavy duty springs of some sort put in, probably to accommodate the additional weight of the M100 engine.

So, here's a question: Does anyone know what a M117 long block weighs? I believe the M100 LB is around 700-800lbs, if memory serves, but I'll happily accept corrections.
Title: Re: Suspension Ride Height
Post by: UTn_boy on 11 May 2017, 11:29 AM
To my knowledge, the 450sel/350sel springs were the strongest springs for a W116, and the W116 springs are unique to the W116.  If anything, someone may have installed thicker rubber pads at the tops of the springs. 
Title: Re: Suspension Ride Height
Post by: rumb on 12 May 2017, 08:52 AM
the new issue of The Star says a M100 weighs nearly 700lbs.