Clunking Sound

[dm100]

Ok, i've bought a 207 sport its on cat d repaired, i've no idea as to the severity of the damage as i've also been told its stolen recovered. The car drives great with only one problem, if the car has been stationary for an hour or so I get 1 clunk coming from the front near side on full lock to the right.
Start the car turn the steering full lock to the right its ok
Start the car turn the steering full lock to the left then right its ok
Start the car move off turn the steering wheel full lock right CLUNK
Start the car with steering wheel full lock right and then move off CLUNK

The CLUNK itself doesnt seem to come up through the steering wheel but through the body of the car.
When the car is on the ramp it doesn't make any noises. The noise wont normally happen again until after the car has been parked up again for a while.
So far its had a new complete shock, spring, top strut mounting, wishbone, drop links, wheel bearing.
Anybody got an ideas its driving me mad

[PureJoe]

A mystery... There's no movement in the nearside caliper, is there? I mean, it's secure?

I'm imagining it sticking on and then moving a little before freeing up with a clunk... Guessing...

Power steering fluid level OK? Thinking air in the system...

[bettyswollocks]

Inner joint on the steering rack, maybe.

[dm100]

The clunk happens after moving up to 2 metres from rest and only if the full lock is on so I don't think its the brake caliper.
The inner joint on the steering rack might be a possibility but wouldn't that vibrate through the steering wheel?
There is a load of head scratching going on over this one so any help is appreciated

[bettyswollocks]

Originally Posted by dm100

The clunk happens after moving up to 2 metres from rest and only if the full lock is on so I don't think its the brake caliper.
The inner joint on the steering rack might be a possibility but wouldn't that vibrate through the steering wheel?
There is a load of head scratching going on over this one so any help is appreciated

Not as much, would give you a knock like a droplink gone.

[chopper1192]

Well, you've replaced almost everything else, so I'm erring towards either a nacked rack, bent rack, or a rack not bolted down properly. The fluid in the rack damps down stuff like that, so you will be less likely to 'feel' it.

Assuming everything is bolted down as it should be, you've eliminated the improbable, so it must be the impossible.

[dm100]

My mates a mechanic and hes the one trying to sort out the clunking noise. He has removed the battery box and has been lying on the engine with his hand on various items to try and feel the clunk as the car is being moved. He says he can't feel it through the drive shafts or through the steering rack but can still feel it on the n/side shock. He has since changed the top strut mountings and the springs from one side to the other but the clunk is still on the n/side and still happens as described above.
We are both losing patience!!!
Any other ideas

[PureJoe]

Originally Posted by dm100

[...] if the car has been stationary for an hour or so [...]
The CLUNK itself doesnt seem to come up through the steering wheel but through the body of the car.[...]

There may be a clue in the car being stationary for an hour. What if the heat from the exhaust gases is expanding something - exhaust pipe, manifold, etc?

(Our cooker goes "clunk" after about 5 minutes heating because the top part of the oven is a little warped...)

Another thought is that there was a poster on here who got a clunk from the rear after the car has been stationary for a while. It turned out to be a fuel pump that had a little air in it - it whizzed round a bit and then bit, as it were.

(Though I have no idea how either would be related to turning.)