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Ryder666 |
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Ryder666 Two Stroke Sniffer
Joined: 22 Feb 2015 Karma :
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Bhud |
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Bhud World Chat Champion
Joined: 11 Oct 2018 Karma :
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Posted: 12:47 - 31 May 2021 Post subject: |
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Can you remove the head, get it on the table and blast the remains of the exhaust header with more weld?
With a high enough voltage, i.e. doing it wrong, it should blow right through the steel, right? If it blows through in one or 2 places, the molten steel should pool, and when it cools down you'll be able to wedge a screwdriver in there and lever it out.
Of course, you wouldn't try this without being aware you could destroy the head. From my pov, if were mine, then as it's not going anywhere right now anyway, and it's a project bike, I could up the risk of damage. However, your appetite for risk may differ.
Worse comes to the worst, you'll end up either taking the head to a machine shop or searching for a replacement on Ebay. Also, if you do try this act of desperation and it works, check for signs of warping before refitting the head.
There may be other and better ways to approach this problem. I'm only saying what I would do - not suggesting you should do this, etc. |
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Pete. |
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Pete. Super Spammer
Joined: 22 Aug 2006 Karma :
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Posted: 13:14 - 31 May 2021 Post subject: |
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Several way of attacking that. First things first make sure the valve is shut and stuff some protection down there if you can.
You could do as Bhud says and wind your welder up to 11 and burn the rusty collar out by running a line of weld down one side.
Or you could hit it with a carbide burr in a die grinder or at a push, a dremel.
You could clean up the inside a bit to get the rust off then run a ring of weld around the inside. That will shrink the collar and break the bond
If you have neither an air chisel or even a small sds breaker with a sharp chisel to cave in one side wich should break the bond and loosen the collar.
Once you have the piece out, remove the spark plug and blow compressd air into the chamber then turn the engine over until the exhaust valve opens. That'll blow any debris out instead of letting it fall in. ____________________ a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
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steve the grease |
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steve the grease Crazy Courier
Joined: 26 Jan 2018 Karma :
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 15:08 - 31 May 2021 Post subject: |
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Looking at the picture, there isn't NEARLY enough penetrating oil floating about to do anything useful. I use ATF mixed 50:50 with paraffin or acetone (the latter if there are no rubber or plastic bits nearby).
As above, If you can burr/saw through it in one point, it should collapse in with the application of some percussive maintainance ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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jeffyjeff |
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jeffyjeff World Chat Champion
Joined: 02 May 2020 Karma :
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sickpup |
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sickpup Old Timer
Joined: 21 Apr 2004 Karma :
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Pete. |
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Pete. Super Spammer
Joined: 22 Aug 2006 Karma :
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Posted: 18:27 - 01 Jun 2021 Post subject: |
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Tig would be the better of the three if you had it. Big heat input and no splatter. ____________________ a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
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jeffyjeff |
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jeffyjeff World Chat Champion
Joined: 02 May 2020 Karma :
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Bhud |
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Bhud World Chat Champion
Joined: 11 Oct 2018 Karma :
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colink98 |
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colink98 Could Be A Chat Bot
Joined: 27 Jun 2016 Karma :
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Ryder666 |
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Ryder666 Two Stroke Sniffer
Joined: 22 Feb 2015 Karma :
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Pete. |
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Pete. Super Spammer
Joined: 22 Aug 2006 Karma :
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Old Thread Alert!
The last post was made 2 years, 326 days ago. Instead of replying here, would creating a new thread be more useful? |
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