Exhaust Manifold bolt re-bore?

Mar 15th, 2005, 16:47

Hello again,

With your excellent help we managed to refit the new manifold, but now I've managed to shear one of the bolts off and it remains in the exhaust manifold causing the most horrendous amount of noise.

I've taken it to various re-bore places who've all told me that there's not enough room in these model Volvo's to reach the manifold with the drill. Now facing scrapping her of trying to vainly flog her which is obviously not what is wanted.

Do any of you clever people have any bright, alternative (and cheap!) ideas or is she a goner?

Many thanks

David

sholtby · Mar 15th, 2005, 17:20

Is it a stud that has snapped off in the head? You'll need to remove the manifold and if some of the stud is still sticking out you could use the sort of stud extractor that fits on the end of a ratchet and bites onto the end of the stud. Failing that a 90 degree air powered drill should fit in there and then use a standard stud extractor.
If that doesnt work you'll need to remove the head to drill it out.

Simon

David 850 GLT · Mar 15th, 2005, 22:18

Can you post a pic showing the offending bolt/stud? If so, we might be able to suggest a repair procedure.

Mar 15th, 2005, 23:13

If you take the manifold off and a reasonable amount of stud is showing (say about 1cm or over) you could always file two flats on opposite sides and get a decent pair of mollys on it to turn it out.

Andy

Mar 15th, 2005, 16:47	#1
850SEOwner Guest Location:	Exhaust Manifold bolt re-bore? Hello again, With your excellent help we managed to refit the new manifold, but now I've managed to shear one of the bolts off and it remains in the exhaust manifold causing the most horrendous amount of noise. I've taken it to various re-bore places who've all told me that there's not enough room in these model Volvo's to reach the manifold with the drill. Now facing scrapping her of trying to vainly flog her which is obviously not what is wanted. Do any of you clever people have any bright, alternative (and cheap!) ideas or is she a goner? Many thanks David

Mar 15th, 2005, 17:20	#2
sholtby Premier Member Last Online: May 26th, 2010 20:17 Join Date: Dec 2002 Location: north east	RE: Exhaust Manifold bolt re-bore? Is it a stud that has snapped off in the head? You'll need to remove the manifold and if some of the stud is still sticking out you could use the sort of stud extractor that fits on the end of a ratchet and bites onto the end of the stud. Failing that a 90 degree air powered drill should fit in there and then use a standard stud extractor. If that doesnt work you'll need to remove the head to drill it out. Simon

Mar 15th, 2005, 22:18	#3
David 850 GLT Junior Member Last Online: Feb 25th, 2016 22:17 Join Date: Dec 2004 Location: Sudbury	RE: Exhaust Manifold bolt re-bore? Can you post a pic showing the offending bolt/stud? If so, we might be able to suggest a repair procedure.

Mar 15th, 2005, 23:13	#4
finster Guest Location:	RE: Exhaust Manifold bolt re-bore? If you take the manifold off and a reasonable amount of stud is showing (say about 1cm or over) you could always file two flats on opposite sides and get a decent pair of mollys on it to turn it out. Andy

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