Exhaust manifold issue - Nissan Forum
 
LinkBack Thread Tools Display Modes
post #1 of 14 Old Mar 10th, 2016, 10:35 PM Thread Starter
Nissan Enthusiast
 
Joined: Apr 2010
Posts: 25
Exhaust manifold issue

I purchased an exhaust manifold for my 05 Altima. I'm wondering if it should look the way it does. Some of the openings seem like they would constrict proper flow of exhaust. I have pictures:

Attached Thumbnails
Click image for larger version

Name:	image_1457670681005.jpg
Views:	155
Size:	54.4 KB
ID:	4073   Click image for larger version

Name:	image_1457670726196.jpg
Views:	290
Size:	59.8 KB
ID:	4081   Click image for larger version

Name:	image_1457670783075.jpg
Views:	144
Size:	65.3 KB
ID:	4089  
show_time23 is offline  
Sponsored Links
Advertisement
 
post #2 of 14 Old Mar 10th, 2016, 11:05 PM
jdg
I Live Here
 
Joined: Aug 2009
Location: ND, USA
Posts: 3,193
That is one CRAP welding job. I'm not a professional welder by any stretch of the imagination and even I wouldn't claim those welds.

99% of the questions that are "STRANGE" have a dirt simple answer...usually answered by a dirt simple search.


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


Is it just me, or does the majority overlook the obvious?

Somebody ate a whole bag of dumbass for breakfast.

Why do people continue to run a vehicle when a warning light comes on or starts flashing? Isn't that a clue that something is wrong and you probably should NOT drive it?
Is this whole car driving thing really freekin' brain surgery?

Here's something new for the crowd/clowns...
"A little bit of Google goes a long way!"

Ever notice the one post wonders for info on turbo'ing a GA16 are never heard from again after they figure out the cost???

And if you can read this, you don't need glasses! :)

And yes, I am diggin' it...
jdg is offline  
post #3 of 14 Old Mar 11th, 2016, 02:25 AM Thread Starter
Nissan Enthusiast
 
Joined: Apr 2010
Posts: 25
Yeah that's the first thing I noticed too. It also doesn't have the any holes for brackets or heatshield. It's $100 cheaper than the next up. You think it's worth it or will it do the job?
show_time23 is offline  
Sponsored Links
Advertisement
 
post #4 of 14 Old Mar 11th, 2016, 09:58 AM
Sup Mod keeping the peace
 
rogoman's Avatar
 
Joined: Dec 2004
Location: NJ (Philadelphia area)
Posts: 6,003
Quote:
Originally Posted by show_time23 View Post
I purchased an exhaust manifold for my 05 Altima. I'm wondering if it should look the way it does. Some of the openings seem like they would constrict proper flow of exhaust. I have pictures:
Yes, it sure is a piece of S**t welds and on top of that it looks like a big mismatch of port sizes. Will probably run worse then the stock manifold.

KA-T for life, yo!
rogoman is offline  
post #5 of 14 Old Mar 11th, 2016, 09:58 AM
I Live Here
 
Joined: Jun 2003
Location: PHX AZ
Posts: 3,344
could always use a grinder to smooth it out, I don't know if the lack of a heat shield would cause any damage to surrounding items
SPEEDO is offline  
post #6 of 14 Old Mar 11th, 2016, 01:13 PM Thread Starter
Nissan Enthusiast
 
Joined: Apr 2010
Posts: 25
Yeah I read that the lack of heat shield won't do any damage, it's strictly there to keep me from getting burned.

The ports all different sizes. Will this cause any sort of damage to the engine? Like pressure issues or somethin?

I'd hate to have to pay $100 more for different manifold but I also don't want $100+ worth of repairs due to this manifold.

Thanks for the help
show_time23 is offline  
post #7 of 14 Old Mar 11th, 2016, 01:37 PM
jdg
I Live Here
 
Joined: Aug 2009
Location: ND, USA
Posts: 3,193
Just judging from the weld job, that manifold isn't going to last any length of time anyway.
That 'bluing' around the edges should be smooth and continuous, not all blocked up like it is. That tells me that the job was done in sections, heated here, not heated there. The metal has expanded and cooled at different rates. Got a strong spot over here and a weak spot over there. It's going to fail after it gets heated up and cooled down a few times. All it's going to do for you in the future is leak.

99% of the questions that are "STRANGE" have a dirt simple answer...usually answered by a dirt simple search.


To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.


Is it just me, or does the majority overlook the obvious?

Somebody ate a whole bag of dumbass for breakfast.

Why do people continue to run a vehicle when a warning light comes on or starts flashing? Isn't that a clue that something is wrong and you probably should NOT drive it?
Is this whole car driving thing really freekin' brain surgery?

Here's something new for the crowd/clowns...
"A little bit of Google goes a long way!"

Ever notice the one post wonders for info on turbo'ing a GA16 are never heard from again after they figure out the cost???

And if you can read this, you don't need glasses! :)

And yes, I am diggin' it...
jdg is offline  
post #8 of 14 Old Mar 14th, 2016, 02:11 AM Thread Starter
Nissan Enthusiast
 
Joined: Apr 2010
Posts: 25
Well I decided to jus go ahead with the replacement for a few reasons. Mainly cost and I should have enough for a new car by next year. Now I have another related issue.

My check engine light stayed on after replacing cat. I did a manual check of the obd2 reading and got p1273 which after reading online is very common and can be a pain. I checked the codes again and this time the check engine light flashed 5 times slowly then just stayed on. I tried manually reading the codes several times with the same result (5 flashes).

I read that I should reset my ecm by following some steps that required removing and replacing MAF sensor and then reading the code which should have been P0171. But once again 5 slow flashes and the check engine light stays on.

Any ideas what's happening?
show_time23 is offline  
post #9 of 14 Old Mar 14th, 2016, 02:38 AM Thread Starter
Nissan Enthusiast
 
Joined: Apr 2010
Posts: 25
Forget that last comment. After trying different methods I got it to work properly. I reset the ecm and so far the ses light is off. But who knows what tomorrow will bring.

I'll post the results
show_time23 is offline  
post #10 of 14 Old Mar 14th, 2016, 02:40 AM Thread Starter
Nissan Enthusiast
 
Joined: Apr 2010
Posts: 25
Correction: I erased the obd2 codes after ecm reset
show_time23 is offline  
post #11 of 14 Old Mar 14th, 2016, 07:19 PM Thread Starter
Nissan Enthusiast
 
Joined: Apr 2010
Posts: 25
And P1273, is back :weary:. There's a smell of raw fuel from the tailpipe. Any suggestions?
show_time23 is offline  
post #12 of 14 Old May 24th, 2016, 06:26 PM Thread Starter
Nissan Enthusiast
 
Joined: Apr 2010
Posts: 25
PROBLEM SOLVED!

Jus passed my E-test!!!! :sunglasses:

Don't know which one of these fixes did it but, cleaning my MAF was the last thing I did.

Here's what I did:

After replacing catalytic converter
-Replaced spark plugs
-Replaced air filter
-Submerged a/f sensor in gasoline overnight (cleared codes and ses came back)
-Patched exhaust leak near flex pipe/Downstream o2 sensor
-Cleaned throttle body
-Cleaned MAF

-Performed idle relearn, then I reset the ecu (remove MAF method)

Drove for a few days and SES stayed off

I hope this helps :blush:
show_time23 is offline  
post #13 of 14 Old Aug 3rd, 2018, 05:48 AM
NissanForums Newbie
 
Joined: Aug 2018
Posts: 7
The exhaust leak from your flex pipe was definitely the problem that caused your vehicle to trigger the p1273 mil code. Normally everyone confuses p1273/1283 for an O2 sensor malfunction.
Tvilayhane is offline  
post #14 of 14 Old Aug 4th, 2018, 07:49 AM
Sup Mod keeping the peace
 
rogoman's Avatar
 
Joined: Dec 2004
Location: NJ (Philadelphia area)
Posts: 6,003
How's the performance with your new header? You should notice a nice improvement at mid-range and up.

KA-T for life, yo!
rogoman is offline  
Reply

  Nissan Forum > Altima/Stanza > L31 2002 - 2006

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Nissan Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
broken bolt manifold issue genxie Pathfinder 3 Mar 1st, 2013 06:48 PM
Intake manifold issue and heads vududoc GA16DE 1.6L Engine 3 Feb 2nd, 2013 09:55 PM
'95 Exhaust Manifold stephank Pathfinder 0 Nov 23rd, 2005 04:46 PM
Exhaust manifold joeSteph J30 1989-1994 Chassis 4 Jan 18th, 2005 07:00 PM
exhaust manifold asome_posome56 QG18 1.8L Engine 5 Jun 21st, 2004 01:10 PM

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome