Welcome to the North American Subaru Impreza Owners Club Wednesday July 23, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 12-15-2012, 01:13 PM   #1
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default Strange Clanking noise

Something just started today and was hoping someone would be able to help. When I rev the engine there is a loud clanking noise. The car drives fine but the noise is definitely not normal. Even if I am not moving it will happen when I rev the engine. Any idea?

* Registered users of the site do not see these ads.

Last edited by GraverD; 12-15-2012 at 01:37 PM.
GraverD is offline   Reply With Quote
Old 12-15-2012, 01:17 PM   #2
RoadKillDMD
Scooby Specialist
 
Member#: 284792
Join Date: Jun 2011
Chapter/Region: RMIC
Location: Vanilla Valley, CO
Vehicle:
2011 STI
Plasma Blue Pearl

Default

<<Fill

<<Out

<<Your

<<Profile

Also give us your mods list.

You might want to make a video as it's hard to diagnose engine sounds just from a description. From the sound of it you have a nasty rod knock, possibly due to a spun bearing... But again, no real way to tell unless we have more info.
RoadKillDMD is offline   Reply With Quote
Old 12-15-2012, 01:19 PM   #3
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

Sorry Its an 02 legacy with a full STI drivetrain. I will go take a video now
GraverD is offline   Reply With Quote
Old 12-15-2012, 01:27 PM   #4
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default


It doesnt sound like rod knock or a s pun bearing to me but I have never hear one in person
GraverD is offline   Reply With Quote
Old 12-15-2012, 02:00 PM   #5
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

think its a bearing or no?
GraverD is offline   Reply With Quote
Old 12-15-2012, 03:17 PM   #6
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

Someone must know what this sound is maybe know what the 5sound ISNT? im scaring myself
GraverD is offline   Reply With Quote
Old 12-15-2012, 07:30 PM   #7
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

nobody knows this sound?
GraverD is offline   Reply With Quote
Old 12-15-2012, 07:44 PM   #8
Flat 4 Motorsport
NASIOC Vendor
 
Member#: 295846
Join Date: Sep 2011
Chapter/Region: MWSOC
Location: Crook County, Illinois
Vehicle:
WRX FP HTA GT3076R
Sexual Chocolate

Default

Could be a loose wrist pin.

Doesnt sound good.
Flat 4 Motorsport is offline   Reply With Quote
Old 12-15-2012, 07:53 PM   #9
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

any chance of it being a tensioner? that is what I am praying on. It has had about 100k miles on the timing belt. I had an appointment monday to get it done
GraverD is offline   Reply With Quote
Old 12-15-2012, 10:33 PM   #10
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

I found a video of a bad tennsioner and it sounds very similar.

Any thoughts?
GraverD is offline   Reply With Quote
Old 12-15-2012, 10:52 PM   #11
Flat 4 Motorsport
NASIOC Vendor
 
Member#: 295846
Join Date: Sep 2011
Chapter/Region: MWSOC
Location: Crook County, Illinois
Vehicle:
WRX FP HTA GT3076R
Sexual Chocolate

Default

Could be the tensioner, pull the cover off and look at it. Nice and easy way to see if it is.
Flat 4 Motorsport is offline   Reply With Quote
Old 12-15-2012, 11:02 PM   #12
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

I will try tomorrow morning, I pray it is
GraverD is offline   Reply With Quote
Old 12-15-2012, 11:09 PM   #13
R35
Scooby Newbie
 
Member#: 321013
Join Date: May 2012
Location: Kansas
Vehicle:
2006 Subaru Sti
Crystal grey

Default

sounds similar to mine, and it was my idler pulley. replaced it and problem solved.
R35 is offline   Reply With Quote
Old 12-15-2012, 11:20 PM   #14
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

finally some kind words!! I can sleep slightly better tonight
GraverD is offline   Reply With Quote
Old 12-15-2012, 11:27 PM   #15
Dillinja666
Scooby Newbie
 
Member#: 332644
Join Date: Sep 2012
Chapter/Region: SCIC
Location: A whales Vagina
Vehicle:
07 STI
It's white

Default

Thats a pulley noise. Take your belt off and run it, the noise should be gone. Spin the pulleys by hand and find the noisy one, I would bet an idler or tensioner...
Dillinja666 is offline   Reply With Quote
Old 12-15-2012, 11:33 PM   #16
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

Quote:
Originally Posted by Dillinja666 View Post
Thats a pulley noise. Take your belt off and run it, the noise should be gone. Spin the pulleys by hand and find the noisy one, I would bet an idler or tensioner...
I think you are right, so many people jumping the gun on a spun bearing But I am not ruling that out yes. Would you say It could possibly be the sound of a bearing or are you pretty positive about the pully?

Thanks for the advice everyone. Just hearing peoples input is making me feel better about the situation.
GraverD is offline   Reply With Quote
Old 12-15-2012, 11:53 PM   #17
Dillinja666
Scooby Newbie
 
Member#: 332644
Join Date: Sep 2012
Chapter/Region: SCIC
Location: A whales Vagina
Vehicle:
07 STI
It's white

Default

Ya it really really sounds like a pulley, take the belt off, should take ya 5 minutes and you will get your answer. Just dont run it for long cause the alt is not going to be spinning, also its going to rev high cause the lack of spinning "stuff".
Dillinja666 is offline   Reply With Quote
Old 12-16-2012, 09:05 AM   #18
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

UPDATE! Dont think its a pully but i DONT think its the shortblock. Sounds like something is loose in the turbo. Please watch till the end to hear it.


Thoughts?
GraverD is offline   Reply With Quote
Old 12-16-2012, 10:52 AM   #19
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

turbo or rod knock?
GraverD is offline   Reply With Quote
Old 12-16-2012, 02:13 PM   #20
RoadKillDMD
Scooby Specialist
 
Member#: 284792
Join Date: Jun 2011
Chapter/Region: RMIC
Location: Vanilla Valley, CO
Vehicle:
2011 STI
Plasma Blue Pearl

Default

You may want to take off your downpipe and check the shaft play on your turbo...

Edit: Even easier! Since you have a rotated setup, just unkook your intake from the turbo inlet and check the shaft play from there

Last edited by RoadKillDMD; 12-16-2012 at 02:22 PM.
RoadKillDMD is offline   Reply With Quote
Old 12-16-2012, 02:33 PM   #21
atlfire
Scooby Newbie
 
Member#: 192097
Join Date: Oct 2008
Default

You wouldn't have any fiends that would put zip ties on your driveshaft would you?

Sheared Egt from the uppipe? Sounds like the something knocked the shaft out of alignment and its clanking around the housing.
atlfire is offline   Reply With Quote
Old 12-16-2012, 03:45 PM   #22
Flat 4 Motorsport
NASIOC Vendor
 
Member#: 295846
Join Date: Sep 2011
Chapter/Region: MWSOC
Location: Crook County, Illinois
Vehicle:
WRX FP HTA GT3076R
Sexual Chocolate

Default

Pull the inlet and look at the compressor blades. Sounds like its out of balance and the blades are hitting the housing.

Are you running a restrictor fitting on the turbo? Pull the line and see if its clogged. Maybe starved the turbo of oil, and fubared the CHRA
Flat 4 Motorsport is offline   Reply With Quote
Old 12-16-2012, 04:03 PM   #23
Juice66
Scooby Newbie
 
Member#: 340526
Join Date: Dec 2012
Vehicle:
2004 WRX STi
s200sx/93oct

Default

Is the oem tensioner Gates? Ive heard nightmares about Gates' tensioners, but i thought oem was Gates...
Juice66 is offline   Reply With Quote
Old 12-16-2012, 04:41 PM   #24
GraverD
Scooby Newbie
 
Member#: 94137
Join Date: Aug 2005
Vehicle:
2002 Legacy "STi"
Silverstone Metalic

Default

SHAFT PLAY! atleast the engine is fine

GraverD is offline   Reply With Quote
Old 12-16-2012, 06:39 PM   #25
RoadKillDMD
Scooby Specialist
 
Member#: 284792
Join Date: Jun 2011
Chapter/Region: RMIC
Location: Vanilla Valley, CO
Vehicle:
2011 STI
Plasma Blue Pearl

Default

Sorry man... Looks like you'll need a rebuild or a new turbo
RoadKillDMD is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 10:59 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.