5.4 Exhaust manifold leak
12-29-2016, 04:27 PM
#151
Senior Member
I do not have a 4.6L however I have seen and heard them having this same issue. However with the 4.6L it is not as common as the 5.4L. I personally feel it is more the material used for the actual exhaust manifold I just have seen metal casting not be the best solution for high temp exhaust manifolds before. Between cracking, splitting, and warping. But that's just my opinion, and I'm just an idget anyways... lol.
12-29-2016, 09:00 PM
#152
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This is exactly what I meant by my post. by talking about metal casting cracking was some other things subject to a lot of heat. Also, my exhaust manifold actually cracked in the middle between the back 2 exhaust ports.
Last edited by subieman89; 12-29-2016 at 09:03 PM.
07-23-2017, 08:02 PM
#153
Junior Member
2010 5.4L exhaust manifold replacement
I purchased a new manifold for the drivers side from RockAuto for $90 and my local Ford dealership quoted me $450 to install plus extra labor if any of the studs broke off.
08-18-2017, 11:40 AM
#154
Registered User
Thread Starter
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So its now been over a year since I installed the headers and they are still quiet and not cracked. I also have noticed that it is snappier on the throttle and it holds gears better while towing so that is a nice side effect. I wish I had gone the header route from the get go.
08-19-2017, 08:09 AM
#155
Mark
iTrader: (1)
So its now been over a year since I installed the headers and they are still quiet and not cracked. I also have noticed that it is snappier on the throttle and it holds gears better while towing so that is a nice side effect. I wish I had gone the header route from the get go.
08-19-2017, 08:47 AM
#156
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I installed the Banks stainless sorties and I used the OEM steel gaskets. My theory worth the steel gaskets was that I didn't think I would have to re-torque the studs again since they collapse right against the head/ header when torqued.
08-20-2017, 10:19 AM
#157
Mark
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I have heard that the OEM gaskets do better with headers. Do you swap out studs with SS
08-21-2017, 03:27 PM
#159
Mark
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08-22-2017, 11:32 PM
#160
Very delayed question
I've had my 08 since new and have had my passenger side manifold changed by the dealer before the warranty expired. Now I'm getting the same damn sound on the driver side at 99,300 miles. It's very disappointing to me that ford has such an inferior quality issue with them that they won't take care of the issue for us loyal ford owners. My question is, would you purchase a Ford manifold, or an aftermarket.....and if an aftermarket, which brand has given the best bang for the buck. Is aftermarket a bad option, or is the fact that my first manifold warped at 58,000 miles?