Benzine
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| posted on 21/4/14 at 06:28 PM |
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Stubborn studs
I have this little turbo, TD04. He is small, and very funny.
Two of the exhaust studs came out with no problems. The other two started to undo for about 3 turns. Then they became stiff, and then even turning
them back the way they became stiff. One I can turn about 45 degrees, the other about 120. Heat only seems to make them stiffer. Soaking in
penetrating oil isn't helping. Why have they done this? How would you go about releasing them?
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olimarler
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| posted on 21/4/14 at 07:29 PM |
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I have a stud puller wrench would work a treat! Chrome vanadium do one used them on my head bolts on my mr2 turbo
Oli
[Edited on 21/4/14 by olimarler]
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olimarler
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| posted on 21/4/14 at 07:34 PM |
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http://www.ebay.co.uk/itm/like/160786498077?limghlpsr=true&hlpv=2&ops=true&viphx=1&hlpht=true&lpid=108&device=t&adtype=pla
&crdt=0&ff3=1&ff11=ICEP3.0.0&ff12=67&ff13=80&ff14=108
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adithorp
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| posted on 21/4/14 at 07:50 PM |
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Sounds like they've dragged the threads in the bottom of the hole. Often caused by the stud screwing right to the bottom of the tapped hole and
damaging the end thread. As the damaged bit on the stud gets to the good threads in the casting it binds up.
Not a lot of choice but to force them out and (if the threads are damaged) fit heli-coils in my experience.
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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olimarler
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| posted on 21/4/14 at 07:56 PM |
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Never had damage to the holes using the stud puller. The stud was screwed though.
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coozer
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| posted on 21/4/14 at 07:58 PM |
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Electrolysis my friend....
1972 V8 Jago
1980 Z750
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matt_gsxr
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| posted on 21/4/14 at 08:31 PM |
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I had a similar thing happen on my exact same turbo. One of the studs seemed fairly loose, but just jammed up like yours.
Ended up drilling it out.
In my case I used a bolt instead as it was accessible from both sides in my car. Seems to work fine like that for me.
Matt
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Benzine
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| posted on 22/4/14 at 12:26 PM |
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Electrolysis sounds like a good idea. How do those stud pullers work? I have no problems with gripping the stud, if I turn it any more the studs will
shear
The other thing I could try is putting it in a pan of v hot oil. I've used that with great success recently but only just remembered
[Edited on 22-4-2014 by Benzine]
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dave_424
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| posted on 22/4/14 at 12:29 PM |
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Some people have good luck with heating the area up hot and pushing a candle or other source of wax into the joint, seems to flow right down into the
threads and help.
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DW100
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| posted on 22/4/14 at 02:31 PM |
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quote:
I have a stud puller wrench would work a treat! Chrome vanadium do one used them on my head bolts on my mr2 turbo
Oli
Are you thinking that Chrome Vanadium is a make of tool?
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olimarler
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| posted on 22/4/14 at 02:52 PM |
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quote:
Originally posted by DW100
quote:
I have a stud puller wrench would work a treat! Chrome vanadium do one used them on my head bolts on my mr2 turbo
Oli
Are you thinking that Chrome Vanadium is a make of tool?
Lol oooops just copied down what was on the tool
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olimarler
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| posted on 22/4/14 at 02:54 PM |
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quote:
Originally posted by Benzine
Electrolysis sounds like a good idea. How do those stud pullers work? I have no problems with gripping the stud, if I turn it any more the studs will
shear
The other thing I could try is putting it in a pan of v hot oil. I've used that with great success recently but only just remembered
[Edited on 22-4-2014 by Benzine]
Difficult to explain. But you Place the puller over the stud and then turn with wrench. It tightens itself around the stud and grips onto it.
Oli
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adithorp
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| posted on 22/4/14 at 03:01 PM |
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quote:
Originally posted by olimarler
quote:
Originally posted by Benzine
...How do those stud pullers work? I have no problems with gripping the stud, if I turn it any more the studs will shear
[Edited on 22-4-2014 by Benzine]
Difficult to explain. But you Place the puller over the stud and then turn with wrench. It tightens itself around the stud and grips onto it.
Oli
So it's not really going to help.
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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Matt21
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| posted on 22/4/14 at 03:05 PM |
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quote:
Originally posted by DW100
quote:
I have a stud puller wrench would work a treat! Chrome vanadium do one used them on my head bolts on my mr2 turbo
Oli
Are you thinking that Chrome Vanadium is a make of tool?
someone had to ask 
ive got to admit, it gave me a little chuckle 
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