Exhaust manifold problem

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Exhaust manifold problem

Postby Danevansgolf » Thu 31.08.2017, 18:14

I've had my turbo/waste gate and exhaust manifold out for an overhaul, when putting everything back with new bolts/ gaskets etc, one of the stud holes connecting the turbo to the manifold has lost it thread.
What can i do to fix this problem?? Ie re thread?? Help needed as I need to fix this problem. Cheers all
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Re: Exhaust manifold problem

Postby lotusflasherman » Fri 01.09.2017, 00:31

'Helicoil' is your solution, it's the original thread insert system that is now used as a generic term. Bit like most people hoover with a Dyson... :D

Do a Google search and you'll get lots of info and choices for helicoil kits.

Alternatively drill & tap for the next size up...
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Re: Exhaust manifold problem

Postby Steve A » Fri 01.09.2017, 06:20

Danevansgolf wrote:I've had my turbo/waste gate and exhaust manifold out for an overhaul, when putting everything back with new bolts/ gaskets etc, one of the stud holes connecting the turbo to the manifold has lost it thread.
What can i do to fix this problem?? Ie re thread?? Help needed as I need to fix this problem. Cheers all


Has the stud left it's thread in the hole or the hole lost it's thread on the stud ? a photo might help
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Re: Exhaust manifold problem

Postby lotusflasherman » Fri 01.09.2017, 09:37

Danevansgolf wrote: one of the stud holes ... has lost it thread.


Thought what was written was quite clear and unambiguous Steve, :smt017
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Re: Exhaust manifold problem

Postby Steve A » Fri 01.09.2017, 16:38

lotusflasherman wrote:
Danevansgolf wrote: one of the stud holes ... has lost it thread.


Thought what was written was quite clear and unambiguous Steve, :smt017


:roll:
Yes but the question is has the thread been stripped from the stud or the hole, as it is an exhaust it most likely have seized and stripped the thread.
If it's just the stud then the hole could probably be salvaged by carefully running a tap/taps in the hole, but this isn't an easy job as the tap could snap giving you another problem :shock:

Helicoil would be too weak for this application, you'd be better off with something like this https://www.thorintl.com/Ensat-Self-Tap ... erts.shtml
a much more superior and permanent job. :wink:
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Re: Exhaust manifold problem

Postby Danevansgolf » Sun 03.09.2017, 08:09

Defo the thread gone on the manifold. As I've got new studs going in. And I can see excess thread bits in the hole and the stud in perfect condition. Now to look for some helicoil s and figure out sizes. Cheers lads.
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Re: Exhaust manifold problem

Postby Danevansgolf » Tue 05.09.2017, 15:48

Problem all fixed. Drilled out and put a thread insert in. Now to finish to job off, and get the car back on the road :D :D
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