Exhaust manifold replacement?
Thread Starter
|
New User
Joined: Jan 2007
Posts: 3
Likes: 0
Exhaust manifold replacement?
I have a 99 F150 4x4 (4.6L) with rusted exhaust manifold bolts. Two bolts are broken and it won't pass inspection. I was thinking I would pull the heads to get at the manifold.
The engine is recessed into the firewall. I'm not sure I can even get the heads out without removing the engine? Does anyone know if this is the case?
Thx...Tony
The engine is recessed into the firewall. I'm not sure I can even get the heads out without removing the engine? Does anyone know if this is the case?
Thx...Tony
New User
Joined: Jan 2007
Posts: 17
Likes: 0
One of my exhaust manifolds, on the drivers side, also has 1 stud rusted and broke off. I would think you could get to the exhaust manifold from the fenderwell like LxMan1 says. Let us know how it goes. I was thinking of putting on aftermarket shorty tube headers instead of another weak ... manifold with pencil thin studs.
Thread Starter
|
New User
Joined: Jan 2007
Posts: 3
Likes: 0
I was planning to remove the plastic fender well today and try to get at the bolts. At first glance it looked like I couldn't access all the manifold bolts from the fender well. Will trry and let you know..
Thx...Tony
Thx...Tony
Thread Starter
|
New User
Joined: Jan 2007
Posts: 3
Likes: 0
I'm going to give it a shot next week. My biggest concern was breaking off the rusted bolts, then having to drill em out. I just figured it would be easier to pull the heads off and do it on the bench.
Thx again...Tony
Thx again...Tony
New User
Joined: Jan 2007
Posts: 17
Likes: 0
Originally Posted by lariat97
I installed my headers by removing the fender liners. Its still a tight fit but it can be done.
Trending Topics
Post Fiend
Joined: Jun 2005
Posts: 7,047
Likes: 2
From: North west La
I don't have pics. I installed JBA shorty headers. I soaked the studs overnight in PB blaster. Soak the EGR line too.They came out all right. None of mine were rusted off. Its still tight around the motor mounts but it can be done. Just plan on it taking most of a day. Use antiseaze on the studs you use to reinstall the manifolds
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
New User
Joined: Jan 2007
Posts: 1
Likes: 0
Have the same problem, with one broken manifold bolt. The mechanic (I'm not mechanically inclined) told me that it would be difficult since the studs are steel and the head is aluminum. He said most the time the studs break off and they can't be drilled out. He said he would try, but usually ended up having to replace the head.
How difficult is it to get the studs out without destroying the head?
How difficult is it to get the studs out without destroying the head?
Post Fiend
Joined: Feb 2000
Posts: 11,496
Likes: 6
From: Kansas
Hello and Welcome to the site.
I've had both sides of mine done and they didn't have to pull the head. What is involved is removing all of the nuts and moving the manifold out of the way. Expect a few more studs to break during this process. Hopefully, the studs did not break flush with the block. If the stud is still sticking out from the block, a set of vise grips is then used to get the stud out.
I've had both sides of mine done and they didn't have to pull the head. What is involved is removing all of the nuts and moving the manifold out of the way. Expect a few more studs to break during this process. Hopefully, the studs did not break flush with the block. If the stud is still sticking out from the block, a set of vise grips is then used to get the stud out.
Thread
Thread Starter
Forum
Replies
Last Post
'73 250
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
10
Jun 18, 2008 11:28 AM