Going to drill my exhaust, can I do it on the bike?

[trepetti]

So before I spring for an aftermarket exhaust, I have to drill out the stock to see if it gives me what I want. I know there are strong opinions on either side, but the decision is made and it's getting the drill.

Everything I read tells me that I can do it on the bike with no worries about the metal shards that are left behind, but before I begin I wanted to tap into the collective knowledge that is this forum and ask anyone knows if there are consequences to leaving the metal shavings in the muffler.

I am impulsive, so the work will be done in the next 48 hours.

Any opinions of the method?

 

[IanHoots]

Most of the shavings will be blown out after you start the engine.

Personally I wouldn't drill it, as the muffler is then unsaleable as its not a standard pipe. I would sell it and put that money towards a new slip on set.




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[IanHoots]

Oops, pushed the wrong button.

Check out YouTube for drilling method. There's a couple of vids on there that demonstrate it well.


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[FinalImpact]

I've heard one. Change is minimal.
If you want it to be louder, its needs bigger holes!

To bad there is no easy way to hole saw the two outlets out and weld 1.25" back in. The reduced velocity lets the Soundwaves travel making it louder.

Good luck!

Trumpet tips???

 

[trepetti]

Budget is tight right now. Will drill first. Than perhaps gut the can. Scorps on the Christmas list [emoji3]

 

[upshiftoverdrive]

Volume isn't increased much. Tone is improved though IMO.

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[TownsendsFJR1300]

As posted earlier Tom, the metal shards should blow out and won't hurt anything...

Christmas will be here soon, THEN, you'll enjoy hearing that wonderful engine!

 

[motojoe122]

Did ya do it, Tom? What do you think of the sound?


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[trepetti]

Yep, all done. As for the result, I would say it meets expectations. It is louder and deeper, and has a nice decel burble. So considering that it cost me all of $9.00 for the 3/8" drill extension, the ROI is great!

 

[Pujazuba]

Mine was already drilled when I bought the bike. The exhaust tone was a big selling point when I first took the bike for a test ride.
I'd say mine sounds precisely like the AFTER of the below video. The difference is quite pronounced!
https://youtu.be/hGLPMVqjzg0

 

[Tuffy1982]

Yep, all done. As for the result, I would say it meets expectations. It is louder and deeper, and has a nice decel burble. So considering that it cost me all of $9.00 for the 3/8" drill extension, the ROI is great!

Did you do them on the bike?
What video did you reference, I'm thinking about doing this.


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[trepetti]

There are lots of videos on the web. Didn't use any one in particular. Just gave it a go.

And yes, I drilled the exhaust while it was installed. 10 minutes work.


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[Tallyho]

Had to share this pic. I thought my muffler had been drilled out. Was a bit to loud for my liking. Thanks to another forum member I have a clean stock muffler which I prefer.

 

[upshiftoverdrive]

Had to share this pic. I thought my muffler had been drilled out. Was a bit to loud for my liking. Thanks to another forum member I have a clean stock muffler which I prefer.View attachment 68065

Holy crap! That's savage.

Do you have a clip of what that sounded like? I'd be really curious, I've never seen anyone cut that much out!

 

[Tallyho]

I don't have a clip of it. But it sounded actually pretty good. I can say that it wasn't as loud as my son's r6 with a Leo Vince pipe with the db killer removed. If I was 20 years younger I would have left it. Boy it must have been a job to cut it up like that though