Mazda3 Offered in both a sedan and wagon, this sporty model offers a great car for the family, as well a fun track car.

WU-TWC replacement

Thread Tools
 
Search this Thread
 
Old Jun 10, 2019 | 02:26 PM
  #1  
PeteConnolly's Avatar
Thread Starter
|
Junior Member
Joined: Jun 2019
Posts: 8
Likes: 0
From: Utah
Default WU-TWC replacement

Anyone done this on a Mazda3? (2006 - 1st gen).

I have the replacement (the complete exhaust manifold back to the TWC flange, so installation is bolt-on, no cutting or welding), but I can't see a way of accessing it without removing most of the bottom of the car (cross members, etc). I have the workshop manual, but it isn't clear on this job.

Any clues accepted!
 
Reply
Old Jun 11, 2019 | 07:15 AM
  #2  
grim_reaper's Avatar
Super Moderator
Joined: May 2012
Posts: 7,848
Likes: 32
From: Queensland Australia
Default

Manifold comes out the top.
 
Reply
Old Jun 11, 2019 | 09:46 AM
  #3  
PeteConnolly's Avatar
Thread Starter
|
Junior Member
Joined: Jun 2019
Posts: 8
Likes: 0
From: Utah
Default

What!! So I just unbolt it, and I'll be able to finagle the whole thing through the top gap between the engine and the firewall? That's great news!

Normally I learn all this stuff off youtube videos, but it looks like nobody has made that one yet. Anyway - I'll give it a go.

Thanks!
 
Reply
Old Jun 12, 2019 | 05:28 AM
  #4  
grim_reaper's Avatar
Super Moderator
Joined: May 2012
Posts: 7,848
Likes: 32
From: Queensland Australia
Default

I could be wrong actually. Workshop manual says it comes out the bottom, I may of confused the 3 & 6 for manifold removal. Sorry.
 
Reply
Old Jun 12, 2019 | 10:43 AM
  #5  
PeteConnolly's Avatar
Thread Starter
|
Junior Member
Joined: Jun 2019
Posts: 8
Likes: 0
From: Utah
Default

Well, you helped me with it! By saying that it came out of the top, I made it come out of the top

The trick is to disconnect the manifold from the exhaust at the gasket, then undo the two bolts on the passenger-side engine mount. The engine can then slide forward about 2-3 inches, which gives enough room to work the manifold out through the top. You *may* have to remove the manifold-engine mounting studs to make enough clearance (I already had them off by the time I thought about moving the engine - you might not have to go that far if you just slide the engine).

Just putting it all back together now. Looking good so far, and I didn't need to mess with the crossmembers or the steering.
 
Reply
Old Jun 15, 2019 | 08:46 AM
  #6  
grim_reaper's Avatar
Super Moderator
Joined: May 2012
Posts: 7,848
Likes: 32
From: Queensland Australia
Default

Well done.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
neko11
Mazda Protege
0
Nov 15, 2010 10:48 AM
jsonnjon
Mazda RX-7
2
May 26, 2010 02:20 AM




All times are GMT -5. The time now is 11:37 PM.