Manifold Exhaust Bolt Broken is it fixable
#1
Manifold Exhaust Bolt Broken is it fixable
Was wondering if I could get some advice on this. While doing a tune up this past week I found a broken exhaust manifold bolt and decided to fix it. The one I found I fixed with no problem by using an easy out.
While taking the exhaust manifold off I also found that I had another bolt that had broken. The bolt is the very aft bolt. Their wasn't much room to drill and I bought a angle drill that you put on your drill. I started drilling and thought I was centered but unfortunetly I wasn't and wound up drilling into the head a little bit.
I was wondering if I could drill out the bolt and put a Heli coil or will I be better off taking it to a shop and have them do it. Here are some pics.
Thanks for the replies,
While taking the exhaust manifold off I also found that I had another bolt that had broken. The bolt is the very aft bolt. Their wasn't much room to drill and I bought a angle drill that you put on your drill. I started drilling and thought I was centered but unfortunetly I wasn't and wound up drilling into the head a little bit.
I was wondering if I could drill out the bolt and put a Heli coil or will I be better off taking it to a shop and have them do it. Here are some pics.
Thanks for the replies,
#2
CF Monarch
You might go ahead and drill/ezout the stud. If you cannot use that same size replacment stud, either overdrill it, and tap, or over drill/tap for a helicoil
#5
CF Monarch
#6
Administrator
From the pictures I think he has pulled the manifold off and wants to pull the head also so as to gain better access to the busted bolt. I would agree its probably easier to address the busted bolt while working it from a bench, however you do open up a new can of worms pulling the head off....
#7
CF Monarch
From the pictures I think he has pulled the manifold off and wants to pull the head also so as to gain better access to the busted bolt. I would agree its probably easier to address the busted bolt while working it from a bench, however you do open up a new can of worms pulling the head off....
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#8
CF Junior Member
Get a good sharp center punch to tap the center before drilling.
Then have a second person looking from the side to help ensure that you are drilling it straight.
Lee
Then have a second person looking from the side to help ensure that you are drilling it straight.
Lee
#9
Site Ambassador
Can of worms is right. Were you even getting any kind of an exhaust leak? Pulling the head is the last thing I would do. If you can't get the bolt out, you might want to consider trying Percy's Seal-4-Good compressible gaskets. They're made to compensate for surface irregularities, and work great. I'd give that a shot before yanking the head.
Last edited by Camaro 69; October 13th, 2012 at 5:46 PM.
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