2g honda sound

[407gst]

i just installed a light weight aluminum pulley. now at about 3K i start hearing this really annoying sound. could this be due to my pulley or maybe a blown t-25?

 

[JayRolla]

Can you explain the sound, does it change with RPM or boost only?

 

[407gst]

well in 1st i hear at 3k then in second a little higher and so on and so forth. i here my turbo spooling without the sound. the sound is like a zzzzz sound .

 

[Auto RS T]

To rule out the pulley, swap the original back on. When you remove the pulley look for rub marks on the timing cover behind the pulley.

 

[slipstream808]

Check for shaft play on the turbo, too!