Factory suspension geometry Options

[Tyler E]

Most questions I have I can find the answers to by searching, but I'm coming up with nothing on this. These pics show the way Porsche measured the ride height on the 911 by measuring the spindle centerline and the torsion bar centerline. Are there specs like this for both the front and back of the 914.

All the reading Ive done on ride height has been related to measuring to the rocker, donut on the floor or fender lip. Im interested in the geometry Porsche used for the road cars, and also what they suggested for racing. Any link or book would be appreciated.

[r_towle]

Yes, if you look in a Haynes manual there are specs, same as the 911 method.
If not Haynes then Bentley and certainly the 914 factory manual.
I have seen it in both factory and Haynes manuals.
It is very clearly a relationship between the pivot point of the system and the centerline of the wheel, so tire size is not relevant....just shod be the same diameter front and rear.

For racing, the setup is quite different and you should confine your searches to the offroad and racing forum here....it's really quite different and really depends upon the track, your wheels, your engine etc...

Rich

[914_teener]

Yes, if you look in a Haynes manual there are specs, same as the 911 method.
If not Haynes then Bentley and certainly the 914 factory manual.
I have seen it in both factory and Haynes manuals.
It is very clearly a relationship between the pivot point of the system and the centerline of the wheel, so tire size is not relevant....just shod be the same diameter front and rear.

For racing, the setup is quite different and you should confine your searches to the offroad and racing forum here....it's really quite different and really depends upon the track, your wheels, your engine etc...

Rich

Tire width will weigh in on how you want to set the suspension geometry.

With that said....I would definitely recommend adjustable perches in the rear.