Bent valves? Thread hijacked, so closed for replies

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AMCQ46
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by AMCQ46 » Thu Jun 09, 2016 2:24 pm

to get the stud out it can help if you remove the first 1mm of aluminium surrounding the stud with a bit of skilled dremmeling. that is where 90% of the corrosion is and there is still plenty of thread left behind.

and regarding this Forum, I agree. of all the owners forums I am on, this is the only one I am active on for exactly the reasons you said..... very few keyboard warriors on here and when there is one the rest of us close it down by self policing.

everybody on here acts the same behind the keyboard as they do when you meet them, there is very little ego and a lot of heart & sole. [r sole?]
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MacV2
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by MacV2 » Thu Jun 09, 2016 3:38 pm

AMCQ46 wrote:to get the stud out it can help if you remove the first 1mm of aluminium surrounding the stud with a bit of skilled dremmeling. that is where 90% of the corrosion is and there is still plenty of thread left behind.

and regarding this Forum, I agree. of all the owners forums I am on, this is the only one I am active on for exactly the reasons you said..... very few keyboard warriors on here and when there is one the rest of us close it down by self policing.

everybody on here acts the same behind the keyboard as they do when you meet them, there is very little ego and a lot of heart & sole. [r sole?]
SOUL you heathen jock twot !

























He said hiding behind his keyboard... :lol: :lol:
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Jazzscot
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by Jazzscot » Thu Jun 09, 2016 4:41 pm

Oi Macca wachit!


Remember its us Jock's that run the show on here!


:D
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MacV2
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by MacV2 » Thu Jun 09, 2016 4:52 pm

Jazzscot wrote:Oi Macca wachit!


Remember its us Jock's that run the show on here!


:D
Yes sir, Sorry sir...it was Carl made me do it... :silent:
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VTRDark
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by VTRDark » Thu Jun 09, 2016 5:31 pm

Now that's what I call a Jockstrapping :lol:

Get some heat around the base of that too as the ally head will expand faster than the stud. Most of us at some stage or another have come across exhaust stud issues. Bloody nightmare they are.
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madmax
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by madmax » Thu Jun 09, 2016 7:57 pm

Try getting a hinge pin out of a dhollandia tuckaway tail lift! I Hate Steel in ali. I normally prefer lager bolts and a gas axe but I am sure if am gentle she will come out.
Bite my shiny metal ass

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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by sirch345 » Fri Jun 10, 2016 7:06 pm

Jazzscot wrote:Oi Macca wachit!


Remember its us Jock's that run the show on here!


:D
Oi I'm here :D

Chris.
A closed mouth gathers no foot. :thumbup:

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Jazzscot
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by Jazzscot » Fri Jun 10, 2016 7:59 pm

sirch345 wrote:
Jazzscot wrote:Oi Macca wachit!


Remember its us Jock's that run the show on here!


:D
Oi I'm here :D

Chris.
Your an honorary Scot Chris!
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Kev L
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by Kev L » Fri Jun 10, 2016 10:11 pm

Now there's an insult for you Chris!!!!! :wave:
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by madmax » Sat Jun 11, 2016 11:30 am

Bolt is out after welding a nut and it snapping we then heated gently with a small gas axe to try and break the seal with expansion and welded a plate with a hole drilled in it to the remaining stump. Thought it was going to snap again, but flush this time but a tappy tappy (gently) and it came out (will post pictures of the method later, worked well) a very nerve wracking 1 hour!
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tony.mon
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by tony.mon » Sat Jun 11, 2016 11:56 am

Well done, it's always nerve racking but you got there.
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madmax
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by madmax » Sat Jun 11, 2016 4:51 pm

There wasn't much stud left in the end after welding a nut on failed, a piece of plate was used with a hole drilled and a mig weld, then tapped gently with a hammer. A small weldors gas axe came in handy to give it some heat a few times to let the contracting move things a little. It was jammed well!

Also re tapped the holes afterward to remove remaining corrosion.

Image


Image

Image
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tony.mon
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by tony.mon » Sat Jun 11, 2016 7:22 pm

As you can see form your last pic the end of the thread has little serrated teeth which grip the aluminum alloy head- presumable to hold the stud still when trying to undo the nut.
This, of course, makes it hard to unscrew the stud....

Good method, worked well enough anyway.
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by sirch345 » Sat Jun 11, 2016 10:12 pm

Jazzscot wrote:
sirch345 wrote:
Jazzscot wrote:Oi Macca wachit!


Remember its us Jock's that run the show on here!


:D
Oi I'm here :D

Chris.
Your an honorary Scot Chris!
:lol: thank you very much Jazz :thumbup:

That's the first time I've been called that :D

Chris.
A closed mouth gathers no foot. :thumbup:

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sirch345
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Re: Bent valves? VTR 1000 cylinder head rebuild service

Post by sirch345 » Sat Jun 11, 2016 10:18 pm

madmax wrote:There wasn't much stud left in the end after welding a nut on failed, a piece of plate was used with a hole drilled and a mig weld, then tapped gently with a hammer. A small weldors gas axe came in handy to give it some heat a few times to let the contracting move things a little. It was jammed well!

Also re tapped the holes afterward to remove remaining corrosion.

Image
I've been known to use that trick before, only I use a longer piece of flat bar and an Arc welder. I find an Arc welder gets the stud hotter than a Mig welder does, which I think helps.

Glad to hear you got it (or them) removed, taking your time and being patient obviously paid off, well done :clap:

Chris.
A closed mouth gathers no foot. :thumbup:

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