My experience removing exhaust manifolds.. - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 01-29-2013, 03:57 PM Thread Starter
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My experience removing exhaust manifolds..

I get a lot of information on this site and folks are always ready to lend advice. Hopefully this will help someone that hasn't ever taken their manifolds off. If you have trouble getting one of the bolts loose, most likely it's not because the threads are stuck in the head. The mounting holes in the manifold are big enough to allow moisture and all sorts of crap to accumulate around the bolt and basically weld itself to the manifold. When they get stuck, they are stuck good. I spent an hour and a half on one bolt tonight. I had to finally use the torch to blow out the remainder of the bolt from the manifold. The fatory bolts are very hard and a drill is almost useless. Another thing I learned the past week or so is, it sure is a lot easier to work on these engines when they are on a stand!!!
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post #2 of 9 Old 01-29-2013, 04:13 PM
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My experience removing exhaust manifolds..

I usually use a 3/8 impact and tighten just a bit before loosening them and gets em right out most of the time.


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94 F-250 reg cab 4x4 5spd 7.3 stroke. 3inch downpipe, 4 in exhaust. super duty turbo with 1.0 non wastegated exhaust housing ww2 and 360 thrust kit. Intercooler, MB diesel hpop, driven diesel complete efuel, 6637 air filter, kingpin dana 60.

09 F150 Lariat crew cab 5.4L v8


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post #3 of 9 Old 01-29-2013, 04:20 PM
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And thats why i'll be pulling the cab when i get around to doing my manifolds. I've got all new SS hardware and high-temp anti-sieze for when i put it back together.

Jimmy
97 F-250 ECLB 7.3/E4OD/4wd, 216k miles: FFD 250/200%'s, stock turbo, built trans, e-fuel, Swamps IDM, shimmed 910's, Melling LPOP, welded cam gear/modified pick-up tube. Built and tuned by me

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post #4 of 9 Old 01-29-2013, 04:20 PM
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Quote:
Originally Posted by dr.deere View Post
I usually use a 3/8 impact and tighten just a bit before loosening them and gets em right out most of the time.


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Yep. For whatever reason I find tightening a fastener and then reversing in a quick succession breaks it loose. Note this trick doesn't work for turbos. I had to use a torch to get the compressor and impeller housings off (heat not cutting).

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post #5 of 9 Old 01-29-2013, 04:43 PM
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heat is a big key. i was removing broken manifold bolts last week patience and heat are key heat let cool heat let cool try it if it don't turn right away more heat. got 4 from the head and 1 from the turbo flange of a 12.5L john deere that way didn't drill any even one that had less than a 1/8th in. sticking out from head

94 F-250 reg cab 4x4 5spd 7.3 stroke. 3inch downpipe, 4 in exhaust. super duty turbo with 1.0 non wastegated exhaust housing ww2 and 360 thrust kit. Intercooler, MB diesel hpop, driven diesel complete efuel, 6637 air filter, kingpin dana 60.

09 F150 Lariat crew cab 5.4L v8


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post #6 of 9 Old 01-29-2013, 05:05 PM
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How the heck did yall grab onto them vice grips?

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post #7 of 9 Old 01-29-2013, 06:11 PM
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i use stud removers and then a vise grip if the stud remover won't grip onto em

94 F-250 reg cab 4x4 5spd 7.3 stroke. 3inch downpipe, 4 in exhaust. super duty turbo with 1.0 non wastegated exhaust housing ww2 and 360 thrust kit. Intercooler, MB diesel hpop, driven diesel complete efuel, 6637 air filter, kingpin dana 60.

09 F150 Lariat crew cab 5.4L v8


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post #8 of 9 Old 01-29-2013, 06:36 PM
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Quote:
Originally Posted by dr.deere View Post
i use stud removers and then a vise grip if the stud remover won't grip onto em
Is that like an easy out?

The last thing I busted was bolt in a geo metro waterpump. Was going as normal and then the head just busted off. Ended up having to tack another bolt to it and back it out.

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post #9 of 9 Old 01-29-2013, 08:28 PM
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Easy outs are amazing lol, and gator sockets lol

-Kris-
2011 f150 ecoboost 4x4 323/452 on php dyno 11/16/13
1995 CCLB DRW 324K
2001 CCLB DRW 319K
Dp tuner infinity, exhaust, intake, chipped, tricked, and wrecked


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The stock downpipe in an OBS is flat because I'm a ginger.
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Finding a decent woman is like shopping for a used truck. You spend most of your time picking through the money pits, wrecks, and basket cases until you find one that you can tolerate
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Well at least you caught the loose bolts before they cause any damage. Nothing worse than a sloppy hole
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