Explorer_PL
Explorer Addict
- Joined
- November 16, 2007
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- City, State
- Rockland County, NY
- Year, Model & Trim Level
- 06EB V8
This is just for informational purposes and as a reference for anybody replacing the famous exhaust manifolds on the 4.6.
I replaced both manifolds on my original motor at 190k miles about 4 years ago.
Another thread about exhaust manifolds replacement on 4.6 v8.
At about 200k miles I replaced the motor (turned out the motor was still good) but reused those "new" manifolds and the stainless steel studs I installed with them.
At about 260k, my drivers side manifold started ticking again along with more noises coming from my exhaust that developed number of holes and cracks:
I ordered a new exhaust manifold and OEM style metal gaskets.
Using a regular 3/8 ratchet, I was able to break loose all 8 nuts, and using a 4mm hex key I removed all 8 studs. Removed the wheel liner, unbolted 2 down pipe 15 mm nuts, and the manifold just came out through the opening over the frame.
The whole process took me no more than 2 hrs.
It's up to you what you will use once you get the regular steel OEM studs out, but in my case it paid to use the SS studs.
Old and new exhaust.
The new gaskets and reusing the old studs.
The micro-ratchet is your friend for few of the studs and nuts
I inserted the top 4 studs, then gaskets, and then I just hang the manifold on them.
After that I re-installed the bottom 4 studs and nuts
New manifold in place
I replaced both manifolds on my original motor at 190k miles about 4 years ago.
Another thread about exhaust manifolds replacement on 4.6 v8.
At about 200k miles I replaced the motor (turned out the motor was still good) but reused those "new" manifolds and the stainless steel studs I installed with them.
At about 260k, my drivers side manifold started ticking again along with more noises coming from my exhaust that developed number of holes and cracks:
I ordered a new exhaust manifold and OEM style metal gaskets.
Using a regular 3/8 ratchet, I was able to break loose all 8 nuts, and using a 4mm hex key I removed all 8 studs. Removed the wheel liner, unbolted 2 down pipe 15 mm nuts, and the manifold just came out through the opening over the frame.
The whole process took me no more than 2 hrs.
It's up to you what you will use once you get the regular steel OEM studs out, but in my case it paid to use the SS studs.
Old and new exhaust.
The new gaskets and reusing the old studs.
The micro-ratchet is your friend for few of the studs and nuts
I inserted the top 4 studs, then gaskets, and then I just hang the manifold on them.
After that I re-installed the bottom 4 studs and nuts
New manifold in place
