Do you think freezing this will pop the tube back in shape?

   #3  

hagrid

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I'll say you have a 50/50 shot of pushing that out with freeze expansion
 
   #5  

RobBase

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Best I can come up with is to cut it at the end of the crimp and use a tubing expander tool, then weld it back together.

Or better yet, let me stick my arm inside of it and I'll do a single bicep curl. Done and done.
 
   #6  
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TurboBlew

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Best I can come up with is to cut it at the end of the crimp and use a tubing expander tool, then weld it back together.
Or better yet, let me stick my arm inside of it and I'll do a single bicep curl. Done and done.
Thats ALOT of labor. I can probably order the component from Akrapovic for around $230. So thats my repair ceiling number. Freezing is "free"... right in the word! :D

I can try to cap the ends then add compressed air and heat it next then keep adding air as I get it hotter. Its high grade 304 stainless...
 
   #8  

tinhead

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I wouldn't do a thing about it, unless you noticed some huge performamce hit.
 
   #10  

Master-Cylinder

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Thats ALOT of labor. I can probably order the component from Akrapovic for around $230. So thats my repair ceiling number. Freezing is "free"... right in the word! :D

I can try to cap the ends then add compressed air and heat it next then keep adding air as I get it hotter. Its high grade 304 stainless...

Used to do that to expansion chambers allah time. Caped both ends, applied air pressure to it on one end heated the smashed spot.
 
   #11  

rg500

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I wouldn't use air...use water or oil.
then apply air pressure. Water doesn't compress, air does, be careful
 
   #12  
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TurboBlew

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I wouldn't use air...use water or oil.
then apply air pressure. Water doesn't compress, air does, be careful
The thought process here is to let the water freeze and expand ~9%. Defrost, refill, and repeat.
Not trying to blow out the welds with high air pressure. I have access to pure nitrogen so if I go the heat route....
 
   #13  

rg500

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true enough, but water expands everwhere....maybe in places you don't want'
google "hydrostatic test" we used to do these tests all the time...
 
   #14  

Master-Cylinder

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ExactWeld used to make beautiful expansion chambers. They cut out the two halves, welded them together and pumped them up hydraulically. But then again, the OEM's just stamp the two sides out and buzz them together.
 
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