Fitting Gas Pressurised Rear Dampers

The need for gas pressurised dampers at the rear is covered in the Renault 4 damper selection page. Ian came over with a bouncy car (third set of non-pressurised dampers failed) and Frederick the Frog was more than happy to sell him the Delphi dampers I'd been saving up for my project.

Gas pressurised dampers are supplied with a plastic strap around them. Without the strap the dampers slowly extend to their maximum length and it takes a fair bit of force to compress them again.

The strap needs to be removed before fitting as it doesn't compress the dampers enough, and it stops the rubber mountings and nuts at the end from being removed.

Gas pressurised damper with strap  

But trying to compress the damper by hand when trying to fit it to the car is close to impossible.

Frederick compressed the damper as far as it would go with one end on the floor and his weight on the other end. Then Ian tied a wire around to stop it from extending again.

Wired damper

Even fully compressed the damper isn't short enough. A jack under the rear hub extended the damper mountings making it easy to fit the damper in position. Frederick tightened the front nut before cutting the wire.

From there all that remained was checking the metal bush housings lined up with the hole in the chassis bracket, then fitting the rear nuts (that are tightened right to the stop on these Delphi dampers).

Jack used to lift wheel

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How to do an oil change

Why oil changes are important

Starter motor

Clutch seizing


Replacing the points




Gas pressurised dampers

Fitting rear dampers

Front suspension lower balljoint

Brakes and hubs

Front brake discs

Rear brake shoes

Gordini wheel nuts


Frederick's angle grinder (RIP)

Very technical

Rear suspension jig

Torsion bar unloading tool

Building a full chassis jig

Dimensions for the chassis jig