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Hey guys,

yesterday arvo changed from my street tyres to my semis for Oran Park today.

So get up early this morning and off I go...not.

At first sounded like I was lazy and didnt do the wheel up tight, sounded like a clunk/metal on metal noise each few meters. (all nuts were on tight and everything)

Came back home as I didnt want to drive down 60kms to OP and have anything happen on the motorway.

jacked car up, free spun the wheels, no noise.

then took the right wheel off, couldnt see anything under there that looked broken.

put wheel back on, all tight and everything, went to park in garage, 1st gear - clunkity bang!

so its when wheel is on, under load. nothing from left hand side.

Any ideas?

I am hopeless at this stuff!!

Cheers,

Chris

Is the wheel clearing the caliper properly? Maybe youve tightened the wheel up a bit skewy and its collecting the caliper on the way through?

Checked the suspension arms? Maybe you've got a busted bush causing the wheel to sit weird...

Checked wheel to shock clearance/rubbing?

Also if you've got a hicas lock bar make sure its still tight. Grab the hicas arm and wiggle it to check for play

Heya Jon!

Yeah clears caliper no worries!

havent had a close inspection at the arms

wheel to shock clearance...dont understand!

lock bar - ah cool, will check that also!

well,

changed my rears back to my street tyre rims/wheels and so far no noise...

looking at the rims

(33GTSt rims with semis - 32 GTSt rims street rubber)

the 33 rim that was rear right seems to have a few og the weights missing from the balancing, would this have caused it?

rim looks healthy...just missing a few weights compared to the others...

thoughtS?

The missing weights won't cause problems at that sort of speed, and with a stock rim i cant see the issue being related to the wheel hitting anything (though it should be pretty obvious if you look inside the wheel well and see any shiny bits)

But, from your description it sounds like it happens once with each wheel rotation so the weights are a possibility of hitting something as the wheel turns.....

Swap the front semi to the rear and see what it does. check the strut for any marks where the weights or something could have hit the lower spring seat (i've had that problem before) also check the rotors and pads just in case something has gotten stuck in there and is destroying your brakes

yeah had Dave (T04GTAAAH) look at it, we changed wheels agai,n and no noise.

although now when I engage reverse, and goto roll back, theres a "clinky" noise. happens everyime for reverse, sounds like Im running over and breaking something on the ground.

Im starting to wonder, could my diff be giving up on me? I know it has been "open wheeling" on the track (bathurst hillclimb did it a fair bit)

Time for a new diff me thinks anyway :thumbsup:

i was going to suggest that the axle/diff teeth could be missing a couple teeth, but then u said it went away with the std tyre's on. maybe the semi is binding up and producing the noise easier? whereas the street tyre has less grip... i duno its a tough one without hearing it.

well,

each time today that noise as once Ive put it in reverse to letting clutch out to roll back, seems to get louder or its just me being a paranoid barstard!! :(

:)

well if its in the driveline....

engine mount

gearbox mount

something dead in the box (but if you can get all the gears probably not)

tailshaft centre bearing

tailshaft uni

diff backlash (not broken teeth if it was it would clunk much more often)

badly worn cvs

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