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Old 11-13-2012, 09:48 PM
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Default Header pipe dent removal

Has anybody tried this?

http://www.youtube.com/watch?v=HhWzx...e_gdata_player

The header on the 525 is pretty mangled...
Should I just send it out instead?
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Old 11-14-2012, 07:10 AM
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I've seen that technique on the internet before. It looks like a good idea. I think the only risk is that it splits the pipe along with pushing out the dent. What does a replacement pipe cost?
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Old 11-14-2012, 08:10 AM
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I tried last winter with little success. I didn't plug the ends. Just filled with water and left outdoors to freeze.
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Old 11-14-2012, 10:00 AM
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Huh. So the expansion is going to alter whatever the path of least resistance is, so the theory is the newly dented metal is weaker than the surrounding tubing? But if you had a crack anywhere, then this method would surely blow that out right?

New header from FMF is $400 http://www.fmfracing.com/Products/Bi...005_KTM_525EXC
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Old 11-14-2012, 10:20 AM
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Interesting report on the experiment Farnham. I may try it anyways.... With plugs.


A new one is $450 from KTM.

It looks like $129 for a used one with a dent on ebay

http://www.ebay.com/itm/KTM-Exhaust-...637d33&vxp=mtr

Then there is this:

http://www.piperepair.com/

Or I guess the FMF aftermarket route... I kinda don't want to spend a ton of money since I know it will happen again.
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Old 11-14-2012, 10:25 AM
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Interesting. I did this with my Klean Kanteen to remove a dent. It removed the dent just fine but also bowed out the bottom. I took a ball peen hammer to the bottom and put it back into shape.
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Old 11-14-2012, 10:32 AM
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Quote:
Originally Posted by rover67 View Post
Interesting report on the experiment Farnham. I may try it anyways.... With plugs.


A new one is $450 from KTM.

It looks like $129 for a used one with a dent on ebay

http://www.ebay.com/itm/KTM-Exhaust-...637d33&vxp=mtr
According to their own Ebay ad, that one with the $129 used one sells a brand new one for $295. I'd probably go the used Ebay route, then you have a pretty decent backup if the freeze method fails.

Or hey, get another die for the bender and a stick of stainless?
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Old 11-25-2012, 05:35 PM
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It worked well, I'll post up pics when I get my hands on a camera.
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Old 11-26-2012, 09:11 AM
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Old 11-27-2012, 08:54 PM
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pics of the ice fix.

this was after standing it up on end and filling it up till it poured out of the head ports.

i tried it a few times and it didn't work until i stuck it outside during a low 20's night. upper 20's to low 30's didn't do anything.
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