Lift problems on GQ

[Batcho Snr]

Recently fitted 4" Procomp springs, shocks & adjustable panhard rods to my lwb GQ but now I have a slight vibration in the rear drive line at about 80 - 90klm. Will extending the lower trailing arms only, so that the springs sit vertical again, bring the diff back to a better angle?. Is it correct that the pinion angle on the transfer case and the diff should be the same so that they cancel themselves out Also had a problem with the frontend developing a speed wobble sometimes when I'd hit a bump . Fitted new bushes and it has helped but from what I've read on pervious posts that drop boxs are the way to go - any thoughs

[stool]

Fitt a 10mm plate steel packer between the gearbox x member
and chassis to lower the gear box down and reduce the angle on the uni`s.

Good luck with the wobble and get used to it.

Steve

[Nelso]

You should replace your lower control arms anyway as they are an expensive breakage waiting to happen. The vibration is coming from your rear tailshaft and yes the universal joints do have to be at the same angle to be balanced.

Drop boxes are the cheapest option to solve the front end problems. There are other options like drop radius arms and five link set ups that have advantages over drop boxes but they are generally more expensive.

[Batcho Snr]

Thanks for the help guys. Might try the 10mm spacer first and see how that works.

[sudso]

Get adjustable upper and lower rear trailing arms, to position the axles centrally and correct the pinion angle by adjusting the top arms.

Front control arms to suit your lift increase are better than drop boxes because they dont hang down below your chassis mount points and are easier to fit.

Getting that lift is getting expensive now isn't it?

[Jimbo]

"Drop boxes are the cheapest option to solve the front end problems"

I would say castor plates are the cheapest option. I ahve a 4" lift and fitted plates and very happy with them. I had wobbles and got the tyres balanced and it went away. The front end wobble wont be caused by the lift itself. The lift will amplify an existing problem such as worn bushes and so on.

have fun.

Jimmy