Hey all,

I've never welded anything, nor had anything welded before, or had a custom pipe made or bent, so apologies in advance if this is a dumb question.

I've got an exhaust pipe that has the muffler sitting straight (parallel to the road.) I'd like to convert it from straight to slightly upswept. In looking at the end of the pipe, it seems like just cutting a small wedge out of the pipe and re-welding it back together would accomplish what I'm looking for. Or perhaps there's a way to undo a little of the bend, re-bending it to be about 15 degrees less bent?

Here's some photos. First, the pipe as-is.



And a photoshop mockup of how I'd like it to end up:



Note: it's not quite the same exit angle as the upsweep on the pipe itself. The 2-1 collector pipe sweeps up at about 25 degrees, but I'm looking for that to gently taper off to a final muffler upsweep of around 15 degrees.

So how would you suggest going about it? Cut & re-weld? Try to find someone who can bend it? Or is there a different approach you'd recommend?

Thanks for any advice.

 

Like you, I am not a welder or a fabricator, but I like the idea of cutting out a wedge. Whether or not that’s doable, who knows?

 

you could easily do a pie cut and achieve the desired result. draw a horizontal line through the center of the pipe and a veritcal line intersecting the horizontal. figure out what angle you want and draw that on the top of the pipe toward the front of the bike and the bottom of the pipe toward the exhaust outlet. you should now have the outlines of a slice of pie. cut the top portion of the pipe out trying not to damage it. now make a verical cut along the center line to match the pie cut. bend the pipe up to match your angle, use the piece you removed from the top to fill in the gap in the bottom, weld to close it all up

 

Just a thought..
Would the turn UP become a rain wate collector?

 

find a tig welder.
most mufflers have a weep hole

 

The mufflers I'm using are already being used on an upswept pipe, so it wouldn't be creating any additional problem.

 

Well, that sounds clever! I'll admit that's not what I had in mind. I was thinking of one big wedge across the full diameter of the pipe, but was concerned that it might lead to some out-of-round issue or other complication. But using a half-diameter (radius)-sized wedge seems like it would be a perhaps better idea. I'll take it to a tig welder and propose the idea. Thanks!

 

Well, that was easy. Took it to a muffler shop and he said bending was right out, and I talked about wedges and whatnot, and he said "why not just cut it at half the angle, then turn that piece upside down and weld it back on?"

So I tried that in PhotoShop and it looked pretty good; I then marked the pipe at a 7.5 degree angle. He chopped and welded it, and it's just about perfect, and was only $25. Well, I mean, it's not perfect, but the non-perfect part will be under a heat shield so I don't care; the final angle for the muffler is about perfect, and for 10 minutes' work and $25, I ain't complaining!