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Rod S

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Rural Suffolk

On the left, after three attempts to weld a nut on top of the broken one it came out !!!

On the right, after four similar attempts on the broken one (left of housing) it sheared below the surface...

So, before drilling the sheared one I went to take out the remaining good two (top middle and bottom middle) and......



Back to the drill...

Schrödinger's cat - so which one am I ???


Carl

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liverpool-on-sea

stud removal....... i thought this was going to be a pertition to get nic banned from the forum lol

no longer a series, but still 1.3 turbo.

On 28th Nov, 2008 Sprocket said:
Oh now that is a long shaft you have Carl.


Jordan

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lol

Back once again like a renegade master


Joe C

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Carlos Fandango

Burnham-on-Crouch, Essex

is that the Exh housing i flogged you? *indifferent*

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



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minimole23

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Wiltshire

Slightly crude and probably not recommended. But I had a shered bolt on a cylinder head. Gave it a bit of heat, then gave the bolt a couple of good tonks with a hammer and then simply undid it with a pair of mole grips.

Then again this is a turbo so will have seen high temperatures.

Just my 2p's worth.

Edited by minimole23 on 25th Feb, 2008.

On 7th Oct, 2010 5haneJ said:
yeah I gave it all a good prodding


Bat

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Bermingum

Hi,
You need heat and lots of it *wink*
Red and Black is the way forward when working on the exh side of turbos
Cheers,
Gavin :)

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Paul R

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Swindon

i also have a snapped stuf in my turbo, i do not wish to take the turbo apart though as it is in good working order still. but i think ill have to, it sheerd below the surface as well. i thought about drilling a hole through and then tapping a anti clockwise thread in the middle but im not sure you can do that lol

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Turbo Tel

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Delaware, USA

I just bought some ultra high temp anti-sieze paste from a turbo place, anyone used it ? question is-- is it any good?

http://www.034motorsport.com/product_info....products_id=608

website:- http://www.terryhunt.co.uk


mini93

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Warwick.

when i was doing re-conning turbo's at work basicly every turbo that was in had at least 1 snapped stud...such a pain!!

we had to carfully centre punth what remained a drill down into the housing eventualy when could just about seeing thread coming thru we picked them out ether than or oversized and put heli-coil in place. definatly upto the job too (were reassebled with high temp copper grease

edit:

with exposed snapped studs molegrips and oxy-accetylin heat till cherry red (just before metal defomation) and keep wiggling untill loose back n forth kinda action

Edited by mini93 on 25th Feb, 2008.

David.


Rod S

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On 25th Feb, 2008 mini13 said:
is that the Exh housing i flogged you? *indifferent*


No Joe, it's one that came with the other bit's I've just got off eBay !!!

I seem to be collecting parts at the moment !!!

Finally got all three studs out after 2 ??? (lost track of time) hours.

All three needed drilling in the end, I managed to weld nuts on top of the two longer ones but one sheared the stud below the flange immediately and the other after three turns out ....*evil**evil**evil*

Don't you just hate Minis ....

Schrödinger's cat - so which one am I ???


Rod S

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Rural Suffolk




On 25th Feb, 2008 Bat said:
Hi,
You need heat and lots of it *wink*
Red and Black is the way forward when working on the exh side of turbos
Cheers,
Gavin :)

Yep, every other time I've been here the sheer heat from welding the nut on top of the broken stud has done the trick, ie undo it while it's still glowing red...... This time the welds failed every time (and the stud kept getting shorter) and, from the weld failures, it looked like the stud material is very high alloy (not a good weld to mild steel MIG wire).

Schrödinger's cat - so which one am I ???


Rod S

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Rural Suffolk




On 25th Feb, 2008 minimole23 said:
Slightly crude and probably not recommended. But I had a shered bolt on a cylinder head. Gave it a bit of heat, then gave the bolt a couple of good tonks with a hammer and then simply undid it with a pair of mole grips.


Not for these broken studs but to free the bolts in the centre section of the turbo (core to exhaust housing) I did essentially the same, but with an air chisel... Round blunt ended chisel on top of the six bolt heads for a few seconds and it broke away all the corrosion and those six all undid without drilling....

Schrödinger's cat - so which one am I ???


Rod S

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On 25th Feb, 2008 Turbo Tel said:
I just bought some ultra high temp anti-sieze paste from a turbo place, anyone used it ? question is-- is it any good?

http://www.034motorsport.com/product_info....products_id=608


Purely a personal thought.... that product actually says "Contains no metals (becuase most don't withstand these temps), safe for all types of metals. Military grade" but from my experience it is only the metal based lubricants that actaully prevent seizing at high temperatures... Copper based ones are most obvious (ie, brakes) but I use Nickel based ones myself, much better IMHO but harder to come by.

The threads I've just recovered in my turbo were by using nickel based lubricant for drilling out the broken bits and re-tapping the threads.

Everyone will have their own opinion though :):):)

Schrödinger's cat - so which one am I ???


Miniwilliams

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On 25th Feb, 2008 Carl said:
stud removal....... i thought this was going to be a pertition to get nic banned from the forum lol


LOL mate that's a gooden!

Turbo Tel that sounds like a good idea, never tried it, but liking it if it works.

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Turbo Tel

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I looked around for non-metallic compounds and it seems that there are different types of metal. All types have a high temp version, nickel and non-metallic seem to go highest and and some are best for use with steels some with alloys. The non-metallic ones seem to be suitable for all types of material. Seems that they can be just as good but are a bit more expensive.

For some reason "nuclear grade" kept popping up betcha that grade works!!

I'll use it when I put my turbo back in but dont hold yor breath for a report. I am hoping to leave the engine in for a while this time!!

Edited by Turbo Tel on 26th Feb, 2008.

website:- http://www.terryhunt.co.uk


MikeRace

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Drill it out, i got the dad in law to sort it (hes an engineer) he took one look at smiled and said "dont worry son, leave it with me".

He did the same as mini 93 but then ran an m8 tap down it, the bolt has tightened up fine.

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mini93

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Warwick.

yeah we always clean the thread out anyway, just part of the re-man process

David.


Rod S

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Rural Suffolk




On 26th Feb, 2008 Turbo Tel said:

For some reason "nuclear grade" kept popping up betcha that grade works!!


Now that's strange, it seems to say that on my tin :):):)

Seriously though, the "Nuclear Grade" is more to do with what they aren't allowed to put in it rather than the base material (nickel in this case). There are a few other "additives" in normal high temperature lubricants but are totally banned in nuclear applications just in case they get somewhere other than the thread they are lubricating.

Schrödinger's cat - so which one am I ???

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