4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Exhaust Leak

Thread Tools
 
Search this Thread
 
Old Apr 22, 2009 | 11:30 AM
  #1  
mrounds06's Avatar
mrounds06
Thread Starter
1st Gear Member
 
Joined: Dec 2006
Posts: 133
From:
Default Exhaust Leak

i have an exhaust leak where the header and midpipe bolt up. These are stock headers. I was told to use silicone rtv around the mating surfaces to seal it up. Does this sound right? any ideas
Old Apr 22, 2009 | 11:33 AM
  #2  
MikeInCape's Avatar
MikeInCape
2nd Gear Member
 
Joined: Sep 2008
Posts: 172
From: Florida
Default

I don't think any silicone is going to handle those temps.



Are you talking about the end of the pipe where it connects to the manifold, or the midpipe joint (I think stock has them, but cant remember).

The gasket for right there in the middle is only a couple of bucks, and minus some stubborn bolts is not that hard to do. If it is where the header meets the H/X pipe then you need to tighten those bolts up. There are no gaskets there and i am 99.9% positive any silicone would just vaporize the first time you start it.

Last edited by MikeInCape; Apr 22, 2009 at 11:36 AM.
Old Apr 22, 2009 | 11:47 AM
  #3  
mrounds06's Avatar
mrounds06
Thread Starter
1st Gear Member
 
Joined: Dec 2006
Posts: 133
From:
Default exhaust leak

yeah its where the header and hpipe meet. ive always had a leak there and can never get rid of. its starting to really **** me off. what is the name of the gasket the meets between the middle of the pipe and catback? might was well do that to. jw are those sleeves supposed to be on driver side header where the midpipe meets?
Old Apr 22, 2009 | 12:34 PM
  #4  
1999GT's Avatar
1999GT
2nd Gear Member
 
Joined: Aug 2008
Posts: 243
From: N.H.
Default

the RTV is a quick fix until you can get a new gasket and redo it, it wont last long though-i tried the same thing and with granny driving i blew it out in a few days! so that is def not the way to go.
Old Apr 22, 2009 | 01:55 PM
  #5  
bs46488's Avatar
bs46488
1st Gear Member
 
Joined: May 2007
Posts: 143
From: Los Angeles
Default

I had that same leak. I went to a little muffler shop and they made me go to Ford and buy a gasket. He said it was oval shaped, so that's why over the counter stuff wont fix it. I think I paid $8. They had it in stock.

I went back to the guy and he threw the part in and problem solved.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trashxtrash
4.6L (1996-2004 Modular) Mustang
4
Sep 20, 2015 10:49 PM
wawagner82
5.0L (1979-1995) Mustang
2
Sep 13, 2015 09:02 AM
MusicCity615
General Tech
7
Sep 12, 2015 07:05 AM
tj@steeda
Steeda Autosports
0
Sep 10, 2015 08:39 PM
Emblazoned
General Tech
0
Sep 3, 2015 10:45 PM




All times are GMT -5. The time now is 12:51 PM.