whistleing noise from somewhere!!! (sorted)

[blingsta]

After removing the air intake from throttle body so i could change the O ring rubber seal from that tube that goes from the block to the inlet manifold. I put everything back on and gues what? Yep, as cars on boost, im hearing a loud whistle noise from under bonnet, sounds like the whistleing kettle on boost... WTF is that about??? any ideas? pipe off from intake ! pipe back on ! = whistle??

[Jon_Bmw]

Sounds like a boost leak somewhere to me, turbo spinning up and leaking from somewhere, creating a high pitched whistle. Maybe somewhere to look at first, to rule it out anyway.

[blingsta]

yeah, but where do i look? all the pipes from the turbo?

[Jon_Bmw]

yeah, any pipes from the turbo to the throttle body. So i'm guessing:

Pipe-from turbo compressor outlet, to intercooler inlet
Pipe-intercooler outlet to throttle body
Dump valve T piece.

From what i can remember you don't have the crappy rubber boot that is standard on an m20 engine, so thats one less thing to look for, as they blow out quite easily.

[blingsta]

will double check all them 2moro.. Cheers Jon

[blingsta]

Yep.... on way home from work, still whistleing away... then all of a sudden, loss of power!! i though the worst.?? pulled up in juice station.. bloody pipe dropped off and hanging loose!! tightened back up, and no more whistles..

[fuzzy]

nice and easy fix i was racing on friday when the turbo to intercooler hose popped off at full boost,got a bit off a fright

[Jon_Bmw]

Nice to see an easy fix Just that bloody o ring left on the inlet mani now

[blingsta]

Yeah, thats the only bugger along with a tiny water leak from thermo housing, i changed one side of the cover as the ridges on the connection pipe were no longer ridged, that sealed 1 little leak, now ive got another from the other side that connects onto the block...