quick exhaust manifold question
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Freshman User
Joined: Jan 2010
Posts: 39
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quick exhaust manifold question
I have a 66 F100 300 with stock exhaust manifold. The muffler shop stripped out one of my bolts on my manifold collector. Can I get that thing out of there and replace it or is that it for the manifold if this happens? If I can get it out, where do you get those bolts at?
Cargo Master
Joined: Sep 2007
Posts: 2,095
Likes: 2
From: Wahpeton ND
You mean the three bolts that connect the intake to the exhaust?
The hardware used on exhaust systems is usualy bought from a muffler shop. They use a special type of bolt designed for the heating and contraction that these parts undergo.
The hardware used on exhaust systems is usualy bought from a muffler shop. They use a special type of bolt designed for the heating and contraction that these parts undergo.
Junior User
Joined: Dec 2007
Posts: 94
Likes: 0
From: Oklahoma
You might have to remove the manifold from the engine so you can mount it in a vise to drill out the old studs. Be careful to center your drill on the old stud so as to avoid destroying the threads in the hole.
Once you get the holes drilled, you might want to heat the studs and the area immediately around them to help dissolve the rust. Let them cool completely before trying to remove the broken studs with an extractor. After everything has cooled down, you can warm the area around the studs (not the studs themselves). This will expand the metal around the studs allowing the studs to come out easier.
If you try to remove the studs while they are still hot, the threads may gall, making them a real pain to get out. If this happens you may have to drill the holes oversize and use a thread insert.
Once you get the old studs out, chase the threads with a tap, then coat the new studs with anti-seize compound. This will help prevent rust and make them easier to get out later, should the need arise.
Another thing that is helpful, when you hook the exhaust back up, use brass nuts. Brass doesn't rust, so again, it is easier to disassemble later.
Once you get the holes drilled, you might want to heat the studs and the area immediately around them to help dissolve the rust. Let them cool completely before trying to remove the broken studs with an extractor. After everything has cooled down, you can warm the area around the studs (not the studs themselves). This will expand the metal around the studs allowing the studs to come out easier.
If you try to remove the studs while they are still hot, the threads may gall, making them a real pain to get out. If this happens you may have to drill the holes oversize and use a thread insert.
Once you get the old studs out, chase the threads with a tap, then coat the new studs with anti-seize compound. This will help prevent rust and make them easier to get out later, should the need arise.
Another thing that is helpful, when you hook the exhaust back up, use brass nuts. Brass doesn't rust, so again, it is easier to disassemble later.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Ratt, You don't have to do anything, the muffler shop is responsible for the repair. One can not break something and not be liable. The owner know this.
First ask him to make the repair, and if he refuses, request it in writing letting him know that you are going to take it to another shop and will go to small claims court to collect.
You will win, keep your payment receipts.
John
First ask him to make the repair, and if he refuses, request it in writing letting him know that you are going to take it to another shop and will go to small claims court to collect.
You will win, keep your payment receipts.
John
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 785
From: Simi Valley, CA
It is not where the exhaust manifold attaches to the intake manifold ([3] studs are also used in this location, not bolts). 2) 378921S2 .. Stud-Exhaust Manifold to Inlet Pipe / 7/16" -14 (x2) / 2 3/8" long / Obsolete
Fits: 1965/74 240 I-6 // 1965/83 300 I-6 / The exhaust manifold is the same 240/300, fits 1965/83.
JST AUTOMOTIVE in Lebanon TN has 2 = 615-443-3086.
GREEN SALES CO. in Cincinnati OH has 3 = 800-543-4959.
FIVE STAR FORD in North Richland Hills TX has 5 = 800-895-7827.
TOM HILLER FORD in Escalon CA has 10 = 209-838-3535.
SAN AUGUSTINE FORD in San Augustine TX has 12 = 936-275-2371.
DOTTS MOTOR CO. in Clearfield PA has 14 = 814-765-9681.
New User
Joined: Aug 2007
Posts: 18
Likes: 2
A truck thats over fourty years old and the Muffler Shop is liable for a broken stud on a manifold please get a grip on reality, most Muffler shops are not qualified to even make that kind of repair. There is a good reason why a lot of shops stay away from working on older vehicles I remember one time a customer came back screaming that ever since we replaced his Idler Arm now his engine wont Idle.
Keep it up SUE SUE SUE and dont be responsible for anything its somebody elses fault Pathetic !!!!!!!!!!
Keep it up SUE SUE SUE and dont be responsible for anything its somebody elses fault Pathetic !!!!!!!!!!
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Hotshot
Joined: Jan 2007
Posts: 11,564
Likes: 4
From: Tucson
A truck thats over fourty years old and the Muffler Shop is liable for a broken stud on a manifold please get a grip on reality, most Muffler shops are not qualified to even make that kind of repair. There is a good reason why a lot of shops stay away from working on older vehicles I remember one time a customer came back screaming that ever since we replaced his Idler Arm now his engine wont Idle.
Keep it up SUE SUE SUE and dont be responsible for anything its somebody elses fault Pathetic !!!!!!!!!!
Keep it up SUE SUE SUE and dont be responsible for anything its somebody elses fault Pathetic !!!!!!!!!!
Not so fast! It is not un-reasonable for the shop to fix it, they knew how old the truck was prior to starting the work. Anyways its just a stud.... not a big deal! heat up the manifold around it with a torch and grab that sucker with some channel locks and turn.
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