motoring|underground  
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read Blog

Maintenance, Problems, and Repairs Troubleshooting your car's woes.

Go Back   motoring|underground > On the Lifts > Maintenance, Problems, and Repairs
Reply
 
Thread Tools
  #1  
Old 05-26-2010, 05:15 AM
professor's Avatar
professor professor is offline
μ
 
Join Date: Oct 2008
Location: Louisville, KY
Posts: 3,242
Default Metallic buzz at 5k RPM?

Driving me nuts. I dont get above 5k that much but the sound makes my Mini sound like a pos.

Not sure how I could record the sound but its a very metallic sound that is constant above 5k. It seems to originate from the engine bay. I am worried about it being something in the head oddly.

I dont think its form the heat shields as they all have good clearance. Can aftermarket headers release this kind of sound through the metal?
Reply With Quote
  #2  
Old 05-27-2010, 04:02 AM
F.G.'s Avatar
F.G. F.G. is offline
Y Rated - 186 mph
 
Join Date: May 2007
Location: Phoenix, planning our move to NewZealand
Posts: 1,511
Send a message via MSN to F.G.
Default

is it load dependant? or speed depandant can you do it just reving the engine? what mods do you have? does it happened more in the morning, afternoon. a little more info I could probably help.
__________________
LILo

"The Goofy, slightly misunderstood Cooper"


Click the image to open in full size.

I Build Jet engines and am a certified level 1 BMW/MINI Tech, so ya I know what I'm talking about...

MOTORING ID ZOOM017
Reply With Quote
  #3  
Old 05-27-2010, 04:28 AM
professor's Avatar
professor professor is offline
μ
 
Join Date: Oct 2008
Location: Louisville, KY
Posts: 3,242
Default

Can do it while reving the engine and not under load. Will happen in either condition. It happens no matter how warm or cold the car is.

I am considering the belt tensioner at this moment in time. Gonna dig further into the issue in the morning with some extra ears. Cant tell from inside where it is coming from other than the front.
Reply With Quote
  #4  
Old 05-28-2010, 08:27 PM
F.G.'s Avatar
F.G. F.G. is offline
Y Rated - 186 mph
 
Join Date: May 2007
Location: Phoenix, planning our move to NewZealand
Posts: 1,511
Send a message via MSN to F.G.
Default

check the pulleys is it a standard or Auto?
__________________
LILo

"The Goofy, slightly misunderstood Cooper"


Click the image to open in full size.

I Build Jet engines and am a certified level 1 BMW/MINI Tech, so ya I know what I'm talking about...

MOTORING ID ZOOM017
Reply With Quote
  #5  
Old 05-29-2010, 03:50 AM
professor's Avatar
professor professor is offline
μ
 
Join Date: Oct 2008
Location: Louisville, KY
Posts: 3,242
Default

90% sure its the timing chain. Gonna replace the tensioner.
Reply With Quote
  #6  
Old 05-31-2010, 11:21 PM
F.G.'s Avatar
F.G. F.G. is offline
Y Rated - 186 mph
 
Join Date: May 2007
Location: Phoenix, planning our move to NewZealand
Posts: 1,511
Send a message via MSN to F.G.
Default

I would have to hear it to agree, but I would always check the easiest and cheepist thing first... how many miles?
__________________
LILo

"The Goofy, slightly misunderstood Cooper"


Click the image to open in full size.

I Build Jet engines and am a certified level 1 BMW/MINI Tech, so ya I know what I'm talking about...

MOTORING ID ZOOM017
Reply With Quote
  #7  
Old 06-01-2010, 01:59 AM
professor's Avatar
professor professor is offline
μ
 
Join Date: Oct 2008
Location: Louisville, KY
Posts: 3,242
Default

46k. Tensioner has been our 2 times for cam swaps.

Not the crank pulley, idler, or belt tensioner.
Reply With Quote
  #8  
Old 06-08-2010, 04:37 PM
professor's Avatar
professor professor is offline
μ
 
Join Date: Oct 2008
Location: Louisville, KY
Posts: 3,242
Default

fixed.

Long story short it was the Alta intercooler panel. 6 people thought it was coming from the chain side of the cam cover.

Either way the old tensioner looks a bit rough so no big deal replacing it. Just should have started smaller
Reply With Quote
Reply

Thread Tools

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


CURRENT MOON

All times are GMT. The time now is 01:38 PM.
Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
2005 motoring|underground, all rights reserved.