Debaffling Drifter oem exhaust

[Fab]

This morning, I told myself that I had two options.

1. Gut the muffler and remove the internal silencer pipes (as described by @moto ). This way, the size of the two holes inside the fishtail would not be relevant.

2. Take a coaxial grinder, add a good dose of elbow grease, and enlarge the two holes inside the fishtail.

I chose a simple solution for a simple problem and opted for the coaxial grinder method. 

[Fab]

This is going to come as a surprise to you, but the stock 1500 muffler has no internal baffles. The pipes are perf core with steel packing. I have had several stock mufflers over the years, and they are all the same. The muffler I currently have  on the bike is a '99. The combination of the steel pack and the restricted air intake system create the muffled sound. Opening up the intake will increase the sound by a lot.

Somehow I just discovered that not all exhausts are created equal...

To cut a long story short, a young guy who got his driving license a month ago t-boned me while reversing. I wasn't hurt—which is the most important thing—but the bike fell on its right side. Minor damage: the front brake lever was bent, there were a few scratches on the crash guards, and the exhaust was scuffed, especially the fishtail.

Now, while the brake lever and guards are easy to replace with new spare parts, it's another matter with the original exhaust fishtail.

I couldn't believe my luck when I found a fishtail from a '99 Drifter 1500 on eBay from Belgium and ordered it right away.
I received it today and it's in good condition.

But now comes the "but"... When I placed the newly received tailpipe next to the scuffed one, I immediately noticed an important difference: the holes through which the internal pipes of the silencer pass are smaller in the fishtail that arrived today.

I then tried to attach the fishtail to the muffler, but the two internal pipes are larger (32 mm) than the holes inside the fishtail.

Does anyone know of any differences between the exhausts on a J and an R Drifter 1500?
Or differences in exhausts between North American and European models?

Mine is a 2001 US Drifter (R model), while the fishtail comes from a 1999 EU Drifter (J model).

Take a look at the attached photo comparing the two fishtails.

What do you recommend? Shall I find a way to enlarge the two holes?

[Fab]

Thanks Troll!

I'm not surprised at all, since @moto sent me some photos of the work he did to gut his stock exhaust at the time. As you wrote, each of the two pipes inside the muffler contains a smaller diameter perforated pipe. Stainless steel wool is sandwiched between each pipe and its perforated pipe.

Apparently, this simple setup manages to muffle the exhaust sound quite a bit.

Unfortunately, @moto no longer has the video he shared in this thread, but he told me the difference in sound was very noticeable.

[Troll]

This is going to come as a surprise to you, but the stock 1500 muffler has no internal baffles. The pipes are perf core with steel packing. I have had several stock mufflers over the years, and they are all the same. The muffler I currently have  on the bike is a '99. The combination of the steel pack and the restricted air intake system create the muffled sound. Opening up the intake will increase the sound by a lot.

[Fab]

I just found this video of a Drifter 1500 with what appears to be a stock exhaust (incl. its "goat bladder") that seems to produce a louder, deeper sound.

Would this be the sound you get when you remove the internal mufflers but leave the goat bladder intact?
Or is it simply the way the camera's microphone recorded the sound (i.e., with boosted low frequencies)?

https://www.youtube.com/watch?v=_MMj0VYjU7M

Thanks!

[Fab]

here is a video what I done:

https://youtu.be/7hvjrqzDI54

and I am verry happy of that sound, this is enough for me and my wife 

Moi Jari 

I know this is an old post, but I was wondering if you still have the video of your OEM exhaust with the silencer removed.
The link in your post no longer works.

Kiitoksia!

[moto]

Well done.
And nice bike, too! 

Thanks!! 

[mittico68]

Well done.
And nice bike, too! 

[moto]

Lovely job, Moto. Sounds good and I love the knee tank gaurds. 

Thanks Paul! 

[drifter-paul]

Lovely job, Moto. Sounds good and I love the knee tank gaurds. 

[moto]

here is a video what I done:

https://youtu.be/7hvjrqzDI54

and I am verry happy of that sound, this is enough for me and my wife 

[drifter-paul]

Yeah, coming back to me now, it was 7 tears ago I removed the exhaust and then replaced it. From memory I put a wooden stick down from the engine side and gave it a few thumps, there was only 1 tab weld holding that plate in place, after that, the whole thing was then just an empty tube.

[moto]

It's done. Now this muffler is real empty, two baffles are taken off, this is last one at first picture.

[moto]

My oem was a 'fishtail' , oval shaped at the end with 2 or 3 small pipes projecting out. Held by 1 screw with no internal  baffling - very effective in muting the sound.
This was an Australian model, but  I don't think we're talking OEM, here..

This exhaust is OEM, default factory exhaust. In this photo, I am removed my fishtail tip so I can reach better to remove these two baffles out.

[drifter-paul]

 
My oem was a 'fishtail' , oval shaped at the end with 2 or 3 small pipes projecting out. Held by 1 screw with no internal  baffling - very effective in muting the sound.
This was an Australian model, but  I don't think we're talking OEM, here..

[moto]

Ok, here is the second baffle what I must to take off.  I starting to drill first 6mm holes around these two inner pipes and 4mm drill I make those two tight sides. Before chisel second baffle I must to lower this one aligment plate edges so that is not blocking the baffle
when  I taking it off. I am not very sure, if this plate edges blocking that baffle that baffle can fit this hole.

[moto]

Well , maybe  I try to remove the second baffle out. It is the similar like first one what I took off.
The second is more deeper inside muffler and I need long drill and chisel.

If anyone has informations, is this second connected like first one, let my know, thanks.

I put pics over there when I start this second round! 

[moto]

Yes, sound is good. Not too loud but perfect. I dont want to hear so loud like V&H pipes is.

[AZCaveman]

Without removing the goat bladder, I doubt you
will notice any real difference.

[moto]

Glad to hear that it worked out. How does it sound with the pipes removed?

I don't test yet

[Old Drifter]

Glad to hear that it worked out. How does it sound with the pipes removed?

[moto]

YES! It's take off! I dont even use hammer to a vise grip. Only pull it out with it when I first drill this circle around these inner pipes.

[Old Drifter]

I hope you're right too...good luck!

[moto]

I f we look to the picture, the right part is connected only on the plate what I need to drill out. I don't see any welding points, only this, I hope that I am right...

[Old Drifter]

That's a good question. Sorry, I don't have the answer on that one.