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Does anyone know if the cracking exhaust manifold issue was fixed by the 2011 Model year? I have been thinking about selling my 2004 Titan & getting a 2011 that I found for sale.
What Year Was Exhaust Manifold Issues Fixed?
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831 Posts
Manifolds were never fixed from what I understand. Time will tell in the newer trucks. You are talking about manifold cracks right?
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If memory serves, I thought they added the "reinforcement" to the manifold design for the 2012 model year...
It was nothing more than a bandaid on an artery hemorrhage... they still crack.
You can see the little plate they added on this manifold... in the "wye" where they collect and head to the cat...
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It was nothing more than a bandaid on an artery hemorrhage... they still crack.
You can see the little plate they added on this manifold... in the "wye" where they collect and head to the cat...
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97 Posts
Yes I was referring to the manifolds cracking. I have an 04 that I replaced manifolds on and they cracked within 6 months. So I went to the stillen long tube headers only issue is the O2 simulator never worked on mine so I get the codes for secondary O2 sensors all the time. Anyway I have been looking at a new to me Titan 2011 model and was wondering if I would have to deal with the same issue. All the exhaust other than the manifolds have been upgraded.
I thought the reason the manifolds were cracking was because the motor had so much torque when the engine would rock back and forth on high revs it would crash the manifolds into the frame?
I thought the reason the manifolds were cracking was because the motor had so much torque when the engine would rock back and forth on high revs it would crash the manifolds into the frame?
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831 Posts
What? No, it's from metal stress and piss poor design. Hot cold hot cold does a number. If you get the truck and end up doing long tubes, make sure you get uprev. That should fix your o2 /cel issue
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Its a design issue more than anything. The aftermarket manifolds dont crack the cats just fail. That simulator does nothing but prevent a light. You need Uprev on that 2004 non flex, its lean. Im getting calls everyday from 2014-15 owners now with cracked manifolds. Most are at 120-140k mile range.
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Nissan added the extra bracing in 2007If memory serves, I thought they added the "reinforcement" to the manifold design for the 2012 model year...
It was nothing more than a bandaid on an artery hemorrhage... they still crack.
You can see the little plate they added on this manifold... in the "wye" where they collect and head to the cat...
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My 08 started getting exhaust leaks at or around 120k. Drove it for over 6 months with the leak but it was getting pretty embarrassing especially when still cold - :eek_surprise: tick.. tick.. tick
Just put on JBA headers, Berks (from the original group buy), and JBA cat back with the Vibrant ultrasonic resonator. Sounds great now. She has a nice growl and is fairly quiet when cruising. :big_grin:
I did have one O2 sensor die after the install so I'm waiting for the new one to arrive on Wednesday.
Just put on JBA headers, Berks (from the original group buy), and JBA cat back with the Vibrant ultrasonic resonator. Sounds great now. She has a nice growl and is fairly quiet when cruising. :big_grin:
I did have one O2 sensor die after the install so I'm waiting for the new one to arrive on Wednesday.
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38,136 Posts
Just to let you know ... They are cracked, trust me :wink:
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They're really not. I just did an exhaust leak check about a month or so ago.
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On my 2011, the passenger side cat went out at 69,000 KM. The right side cracked at 128,000 KM and was replaced under warranty, just before the 130,000 KM expiration.
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