I have a really bad Grinding jingle at 4k rpm's, near the turbo, drive's me up a wall, and doesnt sound good at all,

Has anyone ever had a noise like this? im tryin to Troubleshoot it, Not having much luck

HELP

 

what kinda load is this on? It could be anythnig from turbo to tranny input/coutnershaft bearings.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tchleung &raquo;</TD></TR><TR><TD CLASS="quote">what kinda load is this on? It could be anythnig from turbo to tranny input/coutnershaft bearings.</TD></TR></TABLE>

right when the turbo spool's, like something is loose, weird ****..

 

check the turbo for shaft play... my money goes to the turbo contacting the housings

 

What's your tune look like? Sounds like it could be detonation.

 

is your DP really close to anything else?

mine seems to expand then vibrate on my x-member at 4grand. its really ******* annoying..

just a thought..

 

hmm sounds good, ill take the turbo off and play around

 

I had an awful vibration/grinding noise at 4k in the past...
Turned out to be a cracked turbo manifold.
So...check that out while your in there

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Die-Laughing &raquo;</TD></TR><TR><TD CLASS="quote">I had an awful vibration/grinding noise at 4k in the past...
Turned out to be a cracked turbo manifold.
So...check that out while your in there </TD></TR></TABLE>

thanks for the Tip, were was the crack at, some people showed up last night to kick it in my garage/shop, didnt work on the car much

 

100 bucks says it was an ssac manifold

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wantboost &raquo;</TD></TR><TR><TD CLASS="quote">100 bucks says it was an ssac manifold</TD></TR></TABLE>
actually its a DRAG log manifold

 

Probably a loose bolt somewhere on the exhaust/turbo/manifold.