turbo not boosting

[nismo_gold12]

I have a T3 turbo with a 44mm external wastegate. i was driving up a hill and boosting fine then when i let off my bov sounded half way and then i heard a ting or metal click noise and now it wont boost anymore...it still runs fine and feel like n/a. i took the wastegate off and took it apart to inspect, spring is good and everything looked. i did the same with the bov. i checked for vaccum and boost leaks, none. i have no idea what is wrong, i cant hear spool and if my wastegate was open all the time wouldnt i hear my screamer pipe? when i punch it the boost gauge shoots up to 0 and creeps to 1 maybe 2psi...any suggestions? the last thing i have to check is the exhaust side of the turbo...hopefully the exhaust wheel is still there :? thanks!

[BrettR]

Sounds like you've blown off a charge pipe.

[gdion]

Sounds very much like a boost leak. I don't know your build, but if your running an intercooler check your clamps. The metal noise your hear does maybe a clamp letting go or coming loose.

Gdion

[Simpo]

Like Geline said, something could of get loose. QC everything.

[nismo_gold12]

so someone told me last night that there is supposed to be a valve seat ring between the wastegate and the manifold....i'm guessing that is the problem and that was the noise because i dont have that ring when i took the wastegate off. but where would have it gone? :? out the screamer pipe hopefully!

and now to look for a 38mm valve seat at 9:45 on a sunday morning before i have to leave for montreal again

[BrettR]

so someone told me last night that there is supposed to be a valve seat ring between the wastegate and the manifold....i'm guessing that is the problem and that was the noise because i dont have that ring when i took the wastegate off. but where would have it gone? :? out the screamer pipe hopefully!

and now to look for a 38mm valve seat at 9:45 on a sunday morning before i have to leave for montreal again

Why are you looking for a 38mm valve seat when you have a 44mm gate?

Are you sure your 44mm wastegate uses a seat ring? Also, is it a china made gate or genuine peice?