Anyone ever bend their own exhaust? - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 10 (permalink) Old 09-18-2007, 12:00 PM Thread Starter
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Anyone ever bend their own exhaust?

I am gonna give it shot, anybody got any suggestions. I plan on using a hydraulic pump bender liket he ones from harbor freight. I have heard if you pack the tubing with sand it will keep it from kinking.

Sincerely Your "Squidly" VA rider
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post #2 of 10 (permalink) Old 09-18-2007, 12:02 PM
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You need to use a mandrel and you need to heat the tube while bending it.
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post #3 of 10 (permalink) Old 09-18-2007, 12:16 PM
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Quote:
Originally Posted by Rider View Post
You need to use a mandrel and you need to heat the tube while bending it.
partly I dunno bout the heating part if you have a mandrel bender it suppose to do kinkless bends.
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post #4 of 10 (permalink) Old 09-19-2007, 01:28 AM
 
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i worked at a muffler shop at one time. there's really no cheap way to bend without kinking. how good are you at welding?

-a|ex
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post #5 of 10 (permalink) Old 09-19-2007, 04:42 AM Thread Starter
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Originally Posted by Back _Marker View Post
i worked at a muffler shop at one time. there's really no cheap way to bend without kinking. how good are you at welding?

-a|ex
I would say I am decent, no TIG though, got a wire fed mig. What do you have in mind?

Sincerely Your "Squidly" VA rider
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post #6 of 10 (permalink) Old 09-19-2007, 07:48 AM
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I would say I am decent, no TIG though, got a wire fed mig. What do you have in mind?
You can cut sections of pipe at angles and weld them together... very popular method... Like this (though this picture is admittedly chitty):

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post #7 of 10 (permalink) Old 09-19-2007, 11:10 AM
 
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looks way better than a bent pipe, shows worksmanship, quality.

you can get pieces from a harley/chopper shop, they build alot of their own exhausts, usually sell pipe too. ive seen some at kragen too, but the selection is a bit limited.
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post #8 of 10 (permalink) Old 09-19-2007, 12:44 PM Thread Starter
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I was planning on grabbing some exhaust tubing from an auto parts place.
Not to worried about the welds,as long as they hold)gonna wrap most of it with ehaust wrap.
SO with a four cylinder I should try to keep all the header tubes the same length before the collector correct?

Sincerely Your "Squidly" VA rider
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post #9 of 10 (permalink) Old 09-19-2007, 12:49 PM
 
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i bent mine a little dragging it through corners at the gap, that counts for something.
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post #10 of 10 (permalink) Old 09-26-2007, 10:33 AM
 
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Quote:
Originally Posted by audijunky_1 View Post
I was planning on grabbing some exhaust tubing from an auto parts place.
Not to worried about the welds,as long as they hold)gonna wrap most of it with ehaust wrap.
SO with a four cylinder I should try to keep all the header tubes the same length before the collector correct?
Yes all pipes should be the same length. That way you have good scavaging that is equal in all cylinders. Also check for leaks before you wrap it.
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