ticking wen boostin

[turbomick]

hi every 1 if am in 3 doing about 30 then floor it wen the boost kicks in some thing starts ticking from back of engine only wen its on boost does this sound like my turbo gone 
its doing my nut in any ideas

[tech1889]

need a vid of it to understand what kind of sound it is tbh

[Wayne]

Heatshield expanding maybe. 

[turbomick]

cart video it mate the wen the boost kicks in it clicks and ticks kind off noise from back of engine

[tech1889]

like a knockin sound ?

[turbomick]

no defo ticking just felt down the back off the engine and 2 off the manifold bolt are loose could this cause the tickin under boost

[Wayne]

no defo ticking just felt down the back off the engine and 2 off the manifold bolt are loose could this cause the tickin under boost

Yes a loose manifold will cause a ticking sound.

[Wazzzer]

exhaust gases pulse so if there is a leak it will tick as you describe

[Hulmie]

mmm, its sounds like you have a similar problem to me. I recently had the cambelt and auxy belt changed on my car and now just before coming on boost i here lick a tapping sound that speeds up with the revs and then you cant here it once the turbo spool is louder. happens in all gears. I suspect it may be linked to when the cambelt was changed and need to go back to the garage.

Did speak with nick about it and he said to check the N75 wasnt catching on owt and also check for a split in the pipes that goto the n75, all is fine though. I cant replicate the noise on tick over and just revving the engine. The car needs to be moving.

So i think theres not an issue with the turbo.

[Wazzzer]

now that is a strange one