18 replies to this topic

[Paulus H]

Car is at Main Dealer. They have attempted to drill out broken off exhaust manifold stud but they are struggling. Any advice????

[styles]

If they fcuk it your going to need a new head. If they can't get the bolt out of the head you can get a specialist to drill it and remove it. Be very careful

[Paulus H]

Has anyone used Spark Erosion techniques??

[Crazyfrog (Fab)]

Has anyone used Spark Erosion techniques??

a friend on mine as and very accurate but not cheap:(
not on a engine btw

Edited by FAB VX, 10 June 2010 - 05:14 PM.

[lrid]

Has the nut been removed from the stud? Might be enough room to get one of these on it. http://www.machinema...-stud-extractor Depends what sort of state its in after they have tried to drill it.

[peterg]

I would have thought a 'main dealer' should have stud extractors in their workshop as this isn't exactly a rare occurence on any car, I remember it happening on my Vauxhall Magnum 2300 back in 1976/7... Spark erosion could probably do it but they'd probably need to get the head of the engine to get it done as I'm not sure if it can be done in situ

[Zoobeef]

One of the lads had a couple of broken studs on his tubby and BOT got a speciallist in to drill it. All in situe too. Also it didnt add to much to his bill. Might be worth a call to see who they use or someone similar in your area

[Paulus H]

Zoobeef, Good lead, however do you have the details of BOT? I have read "BOT" on this forum but don't know who BOT are??? Is there any chance you can advise??? Best regards, Paul

[Zoobeef]

Back On Track

[Paulus H]

Zoobeef, many thanks for taking your time to reply and also for your good advise. I have been to the dealer (car not pharmaceutical) this morning and they have finally managed to get the stud out. What a relief! Thanks again.

[two4oneuk]

Good stuff. I had to remove the head when this happened to me. Tried various options in place but no go.

[styles]

Well done always a relief when something goes your way.

[siztenboots]

Zoobeef,

Good lead, however do you have the details of BOT?

I have read "BOT" on this forum but don't know who BOT are???

Is there any chance you can advise???

Best regards, Paul

Back on Track (guildford) are probably too far for you to have as a decent independent VX garage, but there is a superb place closer - Rasp in grimsby who are highly recommended for expertise and value.

http://www.raspltd.co.uk/

[Duncan VXR]

Over the 2 years odd I have had 2 snapped studs on the exhaust side - 1 on mine and had not left enough showing to grap with the extractor type that goes around the body of the stud. using a right angle drill adaptor and hss drill bit starting small to get a nice seat and up a few sizes enough to get the extractor bit inside to remove - find the proper snapon ones only upto this and the cheaper other makes I have are ok when you have the room but worry about snapping them in the hole - the snap on ones are more like a short torx attachment rather than the longer more general ones so nice and easy to tap into the hold to get a bite and use socket / ratchet to remove. Anyway worked both times although head off is not the worse job on a vx Good luck and dont drill the head DG Worse one I have ever dealt with was ka plug snappe in the head!!!!! Steel head, steal plug not coated etc years of rain - so loved servicing that (girlfriends car lol)

[soupdragon]

Good news it's sorted! I used to be pretty good at stud extraction The most sucessful method was to drill the centre of the stud out, with as big a drill as poss without risking the thread on the head or block. Then squirt Rocket WD into the bottom of the recess. Now knock in your stud extractor and turn clockwise/anti-clockwise until you get a little movement, keep lubricating and the movement increases until you can wind it out. Tidy/clean up the thread with a tap and it's job done. Nearly always undo exhaust manifold nuts/bolts when the engine is hot as they are more likely to unscrew from the head allowing you to fit new studs, which is advisable even if they are only a couple of years old.

[Zoobeef]

Worse one I have ever dealt with was ka plug snappe in the head!!!!! Steel head, steal plug not coated etc years of rain - so loved servicing that (girlfriends car lol)

Its sorted now Duncan

I know what you mean about ford engines, worked on a 05 reg mondeo st220. Top of the range car and not very old but the engines just dont stay looking nice for any length of time, flakey rust everywhere. Also dont expect the spark plugs on them to be easy to get to haha

[soupdragon]

I would have thought a 'main dealer' should have stud extractors in their workshop as this isn't exactly a rare occurence on any car, I remember it happening on my Vauxhall Magnum 2300 back in 1976/7...

Spark erosion could probably do it but they'd probably need to get the head of the engine to get it done as I'm not sure if it can be done in situ

Blimey I had a few 2300 Viva's, Firenza's and Magnums
My favourite was a 4dr Magnum with a 2.6 Blydenstein engine!

[Zoobeef]

Nearly always undo exhaust manifold nuts/bolts when the engine is hot as they are more likely to unscrew from the head allowing you to fit new studs, which is advisable even if they are only a couple of years old.

Yeah that, sometimes even get the torch on them befor even trying just incase there stiff

[Duncan VXR]

Doug you have explained kind of the same process I meant Glad it's sorted For ST v6 thing - did a service on Sarah's brothers car which is one of these - lol - I have been put off ever working on fords again after the mondeo and ka Give me a vx any day of the week I always replace the stud / bolts with new turbo even if they are in good condition DG