»  BC-BF Legacy Discussion »  Exhaust
#dat heat shield rattle

Custom Search
Login | Register




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: dat heat shield rattle
PostPosted: Mon Oct 13, 2014 12:50 am 
In Neutral
Joined: Sat Apr 27, 2013 7:11 pm
Posts: 46
Location: KZoo, MI
OK guys, I know I can't be the only driver on here who's become more than slightly annoyed at the rattly stock exhaust manifold heat shields on our cars that get louder as the miles go by. Mine is harmonic; it only rattles loudly about every 500-750 RPM but at idle, my car sounds like a beater.

After discarding the MacGyver-esque nail, shim, or hose clamp methods, I had an idea: cut the existing shields off with an angle grinder or hacksaw and replace them with thermal tape or 'exhaust wrap'. Has anyone used this approach to silence their rattle?

_________________
'92 N/A Wagon - 283k mi and still running!

Turbo wheels n' Pirelli P6s / KYB GR2s / EBC Greenstuff pads + rotors / Walbro 255 / Apex'i airbox filter


Profile  Offline
Reply with quote  
 Post subject: Re: dat heat shield rattle
PostPosted: Mon Oct 13, 2014 1:13 am 
Third Gear
Joined: Wed Oct 26, 2011 7:02 am
Posts: 895
Location: Anchorage,Alaska
My car doesn't have any shields on and never had a problem. I will be removing the ones off my wife soon, she has been nagging me to fix it for awhile.

_________________
Charles

90' White/Gray Outback DD workhorse (670,xxx) miles
92' Onyx Metallic (430,xxx) Wife's DD
68' Barracuda formula S 340 4spd coupe (ongoing project)
66' Mustang 2+2 4spd wife's (ongoing project)


Profile  Offline
Reply with quote  
 Post subject: Re: dat heat shield rattle
PostPosted: Mon Oct 13, 2014 3:32 am 
Fourth Gear
Joined: Sun Jun 10, 2007 4:35 am
Posts: 1746
Location: Arkansas
For a normal DD I'd agree that you don't even need the exhaust wrap. Might actually be better without it, as wrap is known to trap moisture and accelerate rust on manifolds/headers.

I've thought about trying to fab up my own shields out of galvanized sheet metal and tacking them onto my exhaust (mainly for my aftermarket DP and section of the cat-back near the rear diff), but I came to conclusion that it wouldn't be worth the effort, as other factors will kill my car long before the increase in temps around those areas will have any noticeable effects.

_________________
93 Touring Wagon (EJ20G 5spd Swap) -- Finally back and running strong as ever!

05 Outback 2.5XT 5spd -- Now the wife can have her SUV and get in on the turbo Legacy goodness at the same time.


Profile  Offline
Reply with quote  
 Post subject: Re: dat heat shield rattle
PostPosted: Mon Oct 13, 2014 3:46 am 
First Gear
Joined: Sat Sep 27, 2014 7:57 pm
Posts: 191
Ill be cutting my head shields off when i drop the exhaust next weekend. Ill take pics as well, for those suffering the same rattle.

_________________
A4 LM7 Drift build: http://www.audizine.com/forum/showthrea ... or-shut-up


Profile  Offline
Reply with quote  
 Post subject: Re: dat heat shield rattle
PostPosted: Tue Oct 14, 2014 2:21 am 
In Neutral
Joined: Sat Apr 27, 2013 7:11 pm
Posts: 46
Location: KZoo, MI
James614 wrote:
For a normal DD I'd agree that you don't even need the exhaust wrap. Might actually be better without it, as wrap is known to trap moisture and accelerate rust on manifolds/headers.


I did read a few old threads that mentioned this phenomenon. My thought was to make the tape a maintenance item and rewrap it say, as often as I would change my spark plugs. A pain, yes, but worth it to deter rust. Also, you make a good point in that my car will likely get new headers or die before the temp difference becomes a factor.

Drop those pics in here, thewaterboy!

_________________
'92 N/A Wagon - 283k mi and still running!

Turbo wheels n' Pirelli P6s / KYB GR2s / EBC Greenstuff pads + rotors / Walbro 255 / Apex'i airbox filter


Profile  Offline
Reply with quote  

Display posts from previous:  Sort by  

Post new topic Reply to topic  [ 5 posts ] 


Who is online

Users browsing this forum: No registered users and 2 guests

Panel

Top You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
Search for:
Jump to:  

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Dizayn Ercan Koc