vibration in my vp PLEASE HELP

[codicave]

hope some one can help me
i have a vibration when car is moving i have changed wheels and diff
could it be the tail shaft or harmonic balancer OR the auto
please someone point me in the right direction as i dont want to waste more money on this car
ill post more info if needed

[Warranty Void]

Really need some more info mate, Does it stay the same in each gear, does it get worse with speed, does it seem to be a particular side or front/back?
What if you put it in neutral when doing 100k's and let the revs fall back to idle? Better/worse?
The gearbox mount bolts on the VP sometimes come loose, leads to vibration and clunk when you stop.

[miss_trucka]

Also, is it only when under brakes?

[codicave]

ill go take for a drive now and test those things out ill get back to you asap
thanks for the tips

[codicave]

ok the vib is at its worse between 40 and 60 ks but it still there thro the gears but not so bad in higher gears and yes it seems to go away if i put in neutral , it does seem to be coming from the motor so i am starting to think it is the balancer or a head gasket even tho its not miss firing (you know when the gasket goes in between the bores)... the gear box mounts are all tight and the rubber seems to be alright .hope that all made sence cause im a old school holden head not to good on the new holdens im on a steep learning curve with the newer cars.... give me a old holden any day and id have it fixed already lol
cheers all

[Warranty Void]

Well if the vibration goes away when you drop into neutral you can forget the wheels and suspension and brakes. Harmonic balancer? Gearbox?

[codicave]

well the cheapest way would be the balancer for start ... dam hope its not the box as i only buy this thing cause my vn ute auto has a kick down issue ( the kick down cable gets stuck when full thottle is appled and does not return), holding it in watt ever gear i was in. and yes i have changed the cable and there is no kinks in it , its something inside the box
thanks again

[Krisp]

tailshaft needs balancing more than likely

[vpete]

What about your centre bearing in the tail shaft, it would vibrate if that was stuffed!

Cheers...................Pete!

[Burnout124]

it is most likley your center bearing had this problem

[Warranty Void]

That is also the cheapest to change....can't go wrong there.

[codicave]

ok i have a other tail sharft here ill give that a go this weekend i also have a autorear seal so i'll do that to while im there...but if the vib goes away when in neutral would that rule out the tail sharft as tail sharft still spins from diff end at speed or is it like old holden uni joint only vib when under power????

[Burnout124]

center bearing will only show it's self when it is under load when it is in neutral the load is released