thanks for all your help guys and sorry for my late reply, my off day turned into a day madness .

i'll start stripping and shopping for parts, including a couple of new seats with headrests

In my dato, ive got the exact same problem, really aggressive rear end bouncing as soon as u loose traction. Sounds like u guys have got some good ideas comming from past experisnces, sounds like a good idea to give it a go, ill let yas know the outcome of it when i get my licence back(in 6 months )
Cheers

You might want to try some traction bars.. My old Datsun P/U had the same problem and after replacing the shocks and getting only a bit better I put traction bars on and the bouncing stopped. They are fairly cheap and come with either bottom mount or top mount. I used the bottom mout type but wouldnt reccomend them as you lose a few inches of ground clearance.

Talk to your local spring shop there are a few ways to treat axle tramp and they will be able to fix it for you.

This is what I did and mine bounced like a bastard.

All fixed now.

As L18 b110 said get some good shocks if you can afford it use koni adjustables there a reasonable price. & make sure all you bushes are good. It shouldnt matter what bushes you use new rubber bushes wont give you any trouble but ware out a bit quiker

The purpose of the shock is to allow the spring to absorb the vertical displacement loads [bumps] by compressing, then control the rate of release of the stored energy. A firm shock does this wonderfully well, while a worn, or unserviceable one just lets the spring return to its normal position much too quickly.
When the spring returns to its normal position, you gota remember that it can't push the wheel down, so it pushes the body up,..... too far, so the body bounces up & down, changing the tractive force on the tyres from a little to a lot. If you're hooking into it, then axle windup is another complicating factor.

The point?
Pull your rear shocks & check them. If they are below par, then replace them. This is relatively easy & not too expensive. Only replace those components that are actually faulty, or do not provide a satisfactory performance. That means that i think a set of urethane spring bushes would be a good idea too.
Spring replacement is really only a last resort.

Quote:
penrith pedder's no longer has john taylor, or more so he no longer has penrith pedders he sold it and has another business i was talking to jeff taylor last week. i have a feeling his new business may be penrith wholesale suspension, not sure though..... ring jeff

Another option is to fit some decent seats that have a headrest. This should at least stop your head hitting the window

As a workaround, you could gaffertape up your intake filter (except for a couple of square inches). That'll reduce the car's power, improve fuel economy, and stop the tramping..

Cheers,
Chris

ps. I am joking.

I'm with L18 on this....sounds like the leaves are oscillating [axle tramp] and the shocks are not doing their job in reducing this effect. I would check out the shocks.

Benny