small crack on front cylinder header pipe - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 11 (permalink) Old 07-27-2010, 06:49 PM Thread Starter
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small crack on front cylinder header pipe

this is why I love doing all my own work, was changing the oil and cleaning the under side a bit and found a small crack in the front cylinder header. Can i weld it up or do i have to get a new header all together?? Hoping I'll be able to weld it just need some advice first...........thanks.

James

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post #2 of 11 (permalink) Old 07-27-2010, 07:36 PM
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I would think you should be able to weld the crack.
Where's the crack at, the flange or in the tubing?
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post #3 of 11 (permalink) Old 07-27-2010, 07:45 PM Thread Starter
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close to were it's bolted in but it's down about an inch or 2

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post #4 of 11 (permalink) Old 07-27-2010, 07:49 PM
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So it's in the tubing near the flange.
I would think they should be able to TIG or maybe MIG weld the crack.
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post #5 of 11 (permalink) Old 07-27-2010, 08:59 PM Thread Starter
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ok, my dad has both.................Have to make a trip back to NC to get it done one of these days, not sure of the cons of riding with it like that, do you know what they would be??

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post #6 of 11 (permalink) Old 07-27-2010, 09:17 PM
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At worse, the crack would propagate and the tubing could separate from the flange.
That section gets hot and expands and contracts a bit, plus the vibration.
I would try to get it welded as soon as possible just to be sure.
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post #7 of 11 (permalink) Old 07-29-2010, 10:04 AM
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Originally Posted by SubSailor View Post
At worse, the crack would propagate and the tubing could separate from the flange.
That section gets hot and expands and contracts a bit, plus the vibration.
I would try to get it welded as soon as possible just to be sure.
+1 try to get it repaired as soon as you can
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post #8 of 11 (permalink) Old 07-29-2010, 04:57 PM Thread Starter
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cool, will get it repaired asap.........thanks guys

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post #9 of 11 (permalink) Old 07-31-2010, 10:52 AM Thread Starter
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pics of the crack:





Hopefully getting it welded today!

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post #10 of 11 (permalink) Old 07-31-2010, 01:40 PM
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Hello,
If its not to late and you are tig welding the crack purge the inside of the pipe this will give you a better quality weld as the inside of the pipe/weld will be protected by the sheilding gas the same as the out side.
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