Discovery II Talk about the Land Rover Discovery II within.
Sponsored by:
Sponsored by:

Exhaust manifold replacement

Thread Tools
 
Search this Thread
 
Old Mar 17, 2020 | 06:41 PM
  #1  
Old Bertha's Avatar
Thread Starter
|
Mudding
Joined: May 2018
Posts: 144
Likes: 16
From: Florida
Default Exhaust manifold replacement

So the threads in my passenger exhaust manifold that are used to connect the y pipe are stripped... It doesn't look too hard to pull out the manifold and replace it, it looks like I can pull it without removing anything else but please correct me before I go in thinking that. Has anyone replaced this? I have replaced a lot of studs with bolts in the past and I am wondering if there is a reason people are still manufacturing the stud replacement kit, am I not able to on this job? If I can switch to bolts I'm wondering if I should just invest in a tap set instead of a new manifold and tap some bigger holes in the existing one and throw on some bolts. Let me know what you guys think, thanks
 
Reply
Old Mar 17, 2020 | 06:50 PM
  #2  
Extinct's Avatar
Baja
Joined: Feb 2013
Posts: 5,238
Likes: 1,800
From: Lynchburg VA
Default

Just did this. Passenger side is easier to get out, I move the compressor out of the way to move the hoses out of the way on the drivers side. Studs will usually come out, just work it back and forth. You can drill them out if you like, bolts are a little more convenient if you have to change gasket with manifold on.
 
Reply
Old Mar 17, 2020 | 07:03 PM
  #3  
Old Bertha's Avatar
Thread Starter
|
Mudding
Joined: May 2018
Posts: 144
Likes: 16
From: Florida
Default

Are there studs and nuts holding the manifold to the engine? I thought there were bolts holding on the manifold, or were you referring to the ypipe studs. I'm just doing the passenger side so good to know, thanks!
 
Reply
Old Mar 17, 2020 | 07:11 PM
  #4  
Old Bertha's Avatar
Thread Starter
|
Mudding
Joined: May 2018
Posts: 144
Likes: 16
From: Florida
Default

Oh and do I need to replace the manifold spacers/washers or can I reuse those?
 
Reply
Old Mar 17, 2020 | 07:46 PM
  #5  
Friday Night Disco's Avatar
Pro Wrench
Joined: Dec 2016
Posts: 1,603
Likes: 229
From: Fall City, WA
Default

Originally Posted by Old Bertha
Oh and do I need to replace the manifold spacers/washers or can I reuse those?
They are bolts holding the manifold on

I don't care if you reuse the existing, just make sure you count how many were on each port. Also....get some liquid copper gasket and coat them, even if you get new, before you reassemble.

If you have SAI, it sucks a little more getting those corrugated pipes off. If you do, use the liquid copper gasket on the threads when you reassemble the SAI
 
Reply
Old Mar 17, 2020 | 07:54 PM
  #6  
mln01's Avatar
Camel Trophy
Joined: Dec 2009
Posts: 3,877
Likes: 948
From: Charlotte
Default

They can be reused. This is about as easy a job as there is, unless yours is an SAI truck.
 
Reply
Old Mar 18, 2020 | 08:11 PM
  #7  
Extinct's Avatar
Baja
Joined: Feb 2013
Posts: 5,238
Likes: 1,800
From: Lynchburg VA
Default

You don't need to remove the SAI pipes, I don't. That's why I move the AC compressor. The red silicone on either side of the gasket is good standard practice. Put a good 1/8 thick bead on it, put it together and barely snug it down till both sides touch the silicone (you can see it move slightly). Let it cure 24 hrs, then torque it down. Put some red silicone on the threads also. Don't overtighten the exhaust pipe bolts/nuts or you will get to do it again.
 
Reply
Old Mar 18, 2020 | 08:48 PM
  #8  
Richard Gallant's Avatar
Camel Trophy
Joined: Sep 2017
Posts: 3,812
Likes: 1,329
From: Mission BC Canada
Default

Be careful if you drill and tap, the one stud bottoms and if you go too far you are in to exhaust portion of the manifold.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
LR03NJ
Discovery II
7
Sep 2, 2017 12:39 PM
DiscoXD_mike
Discovery I
4
Oct 8, 2015 06:39 AM
slabrat
Discovery II
2
Apr 15, 2013 08:17 AM
ShortTom
Discovery II
3
Jan 29, 2012 07:29 PM
surfoblb
Discovery I
3
Feb 8, 2011 06:01 PM




All times are GMT -5. The time now is 01:06 AM.