Re: IML: Problem with exhaust manifold studs...

[<mopar413@xxxxxxxxxxx>]

The left handed drill bit usually work pretty good.  It is turning the same way the the bolt turn and a lot of the time it will back the bolt right on out.
> 
> But  I need to know a little more :)
> What is a left hand drill bit set??
> I suppose the spiral on the dril goes counterclock wise then, but what are 
> the benefits then?
> 
> Ofcourse pulling the head is the safest way, but I don't like to pull the 
> head of an otherwise sound engine..
> 
> BTW, what is an E-Z ???
> 
> Yes, the job is making me a little nervous but if I screw it up I can always 
> pull the head and bring it to the machine shop for extracting the studs.
> 
> But I think I should try it myself, don't you think?
> 
> Thanks,
> 
> Robert
> ----- Original Message ----- 
> From: "Benjamin Breyer" <bmb2102@xxxxxxxxxxxx>
> To: <mailing-list@xxxxxxxxxxxxxxxx>
> Sent: Thursday, May 10, 2007 5:25 PM
> Subject: Re: IML: Problem with exhaust manifold studs...
> 
> 
> 
> 
> If you reinstall the manifold with four bolts, use two gaskets.
> 
> Pulling the head is the safest way to deal with this problem. If the
> job makes you nervous, let a machine shop extract the studs. It
> isn't that difficult, however. Use a *good* drill bit set, starting
> small, and gradually step up the bit size until little more than the
> stud threads remain. Then use an E-Z out, need nose pliers, or
> something else. If you measure the depth of the stud hole, you
> needn't fear drilling too deep. You will probably feel the bit
> bottom out before you begin drilling into the head anyway. I've
> never used them, but a left-hand drill bit set might be a good way
> to go.
> 
> 
> Quoting Rob van der Es <r.vdes@xxxxxxxxxxxxxxx>:
> 
> > Hi Paul and the rest of the IML gang,
> >
> > I need some expert advise with regard to the exhaust manifold
> > studs of my
> > 1960  Imperial.
> > For 10 days ago I broke the exhaust manifold flange of the left
> > manifold...
> > I noticed a a roadbump too late and was hitting it with too much
> > speed,
> > since the whole exhaust system is pretty rigid the impact was
> > given
> > directly to the cast iron manifold..
> >
> > With the restult that the flange has broken..
> > I found myself a reputable cast iron welder that has done the job
> > many
> > times before so with a little luck I will have my manifold back
> > early next
> > week.
> >
> > But now for the real problem: when taking the manifold off two
> > studs were
> > broken....
> > Despite of several overnight soaking sessions with penetrating
> > oil!
> >
> > The number two stud (counting from the radiator) and the last
> > stud are
> > broken and almost flush with the head.
> > Ofcourse I can try if the 4 remaining studs and bolts will secure
> > the
> > manifold but  I simply don't like the idea.
> >
> > On the otherhand, I either don't like the idea of taking the head
> > off.
> > And at least the last stud is very difficult (or not..)
> > accessible with
> > the head in place.
> > So maybe I should aim for the second stud to come out.
> >
> > Both studs are almost flushed with the head surface (slightly
> > below
> > actually).
> > Is there a safe way to get them out?
> > Or should I try to secure the manifold with the 4 remaining nuts
> > and see
> > what happens?
> >
> > If this doesn't work out, how do I remove those broken studs
> > then?
> > And where can I buy new studs for my engine?
> >
> > Ofcourse I can try to drill out the number two studs since I
> > think I can
> > access this one from the left front wheel area (with the left
> > front wheel
> > removed ofcourse).
> >
> > But what if I screw up and the studs doesn't come out, since
> > these studs
> > are in the cooling fluid area it is important that I don't cause
> > any
> > leakage.
> > If I break a drill for e.g. while it is just through the center
> > of the
> > stud (if I am lucky..) and the broken part gets stuck, cooling
> > fluid will
> > escape then!!
> >
> > So should I go for the 4 studs fasting method first?
> >
> > Any words of whisdom??
> >
> > Thanks,
> >
> > Robert
> > 1960 Imperial Crown
> >
> >
> >
> >
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> 
> 
> 
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