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View Full Version : Bouncy Hydragas Units question ???



Alex B
05-04-2007, 12:17 AM
Well the car seems to be doing fine apart from some silly things...but the car is really bouncy when going through significant bumps on the road...at the point that it feels a bit scary.

Any way I can improve this without getting rid of the Hydragas Units ?...maybe having them individualized will improve this ?

Help Matt.

Cheers,

Alex :crazy:

AndyF
09-04-2007, 10:16 AM
On my Tro GTi i individualized the hydrogas units and was a great improvement on the ride, at a later date i took the front hydrogas units off the car and added coilovers on the front :)

Alex B
09-04-2007, 11:21 PM
Andy that will be one of my future steps...individualized units. But I'd like somebody to tell me if it really should feel like this as I can't remember it from my previous ownership back in 1992.

BTW was the coil over conversion on the front a difficult job ?

Alex :rolleye:

AndyF
10-04-2007, 07:42 AM
Andy that will be one of my future steps...individualized units. But I'd like somebody to tell me if it really should feel like this as I can't remember it from my previous ownership back in 1992.

BTW was the coil over conversion on the front a difficult job ?

Alex :rolleye:


When the Tro is at the standard height and pressure in the system i personally found it scary, you hit a bump and was like hitting a wave at sea in a boat, some dips in the round even made you sick lol and roundabouts well you can use your imagination, but having the shocks on the front of my GTi and also i remember i had shocks on the Metro Turbo helped alot with the handling but to have the shocks you have to have the strenghtening plate there to support them.

Regarding the coilovers, they go in place where the shock is and is safe to take the hydrogas unit off the car but they must be individualized first for you to do that, there is no grinding or anything for them to fit just a straight swap from shock to coilover, in experience when or if you decide to go the coilover route that you purchase GAZ coilovers i first bought some AVO coilovers and the build wasnt as good as the GAZ imo.

Hope the info helps :)

Rally Matt
10-04-2007, 09:33 AM
I have a feeling there is supposed to be a valve between the front and rear units. the system was always designed to be interconnected.

Early Metro Turbos had and additional shock absorber with the 2 independant front units, rears were connected side to side. You used to be able to attach a shock absorber to all the old style Metros without additional parts (IIRC) but not sure on Rover and 100 series versions as changes were made to the engine bay.

A correctly functioning Hydragas set up is pretty good particularly the late system with front to rear connection. I know the only way to lower the cars properly is to shorten the piston in the unit as letting pressure out is like running on a flat tyre to lower the car.

Sounds to me like there is something faulty with components rather than the design itself being to blame.

jld
10-04-2007, 10:04 AM
I've probably posted this link before, but no harm in reposting it.

http://www.mgmetrocup.co.uk/html/suspension_mods.html

The MGF uses a similar hydragas system. Lowering trumpets are available from many MGF specialists (such as Mike Satur), or the existing ones can be machined.

Many of the Metro Cup guys run with up-rated front dampers as well.

GT
10-04-2007, 10:09 AM
Its been so long since I've had a Metro, and since then I've been used to ZR suspension, so everything I drive now feels wobbley and bouncy compared. :o