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Discussion Starter #1
Hi all i have just cut down my rear can on the full system. Why because i did not like the look of the ti long can and thought that it would look better short like the carbon.

To do this you will need a Dremel or a small grinder.

1. take off take off the can.
2. mark with a compass how much you want to cut off. I cut off 140mm
3. drill out reverts from the bottom end and remove band. Do not cut the top end as the centre pipe is welded to the bottom end so you will have to remove it any way.
4. cut along the line you have marked and straight down the centre. Only go deep enough to cut the skin. There is glue holding the pipe in so you will have to cut down the centre to remove skin.
5. pull out pipe be careful not to pull out the packing. There is also a fine mesh gauze that you have to remove.
6. cut inner pipe and gauze to match what you cut off the skin.
7. find a socket that fits in the flared end of inner pipe. You have flare the end that you just cut. You will need to heat it up a few times then bash in the socket to flare it. You may have a tool to do this and it would be easier.
8. cut the fibre packing
9. repack all
10. revet the strap back on.
This took me about 3 hours to do.

Ok now for the all the questions
Yes it is louder but by how much im not sure. Im going to get the DB checked with another multi next week and will post the results
No there is no gain ( from what I have found)
No there is no loss ( from what I have found)
 

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You're gonna love my nuts...
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Wow, very nice! You did a great job!
 

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Yeah. That is a awesome good job done. If you don tell, nobody would know it was a DIY custom made pipe. Simply well done. Unfortunately in my country, the authority is very strict in modification of vehicle parts. >_<
 

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Nice! I don't think that it needs to be cut, I am satisfied with it as is. I however wished it had been in cf instead. But wtf you can't have it all.
 

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You're gonna love my nuts...
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That is a really interesting solution to this. The two straps that are riveted on; can you buy those in a longer length to accommodate the carbon fiber?

All we need is some carbon fiber tubes that have the right shape and we could replace the ti skin for the carbon. Anyone live near these guys?

http://www.pjengineering.co.uk/products.asp?cat=8

Or know any cf tube sellers?
 

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Interesting look - I personally don't think I would do it/have it done but I can appreciate it.

Pretty ballzy though, cutting a ti exhaust can from a $2,400.00 (US) exhaust sys. It looks like it came out very clean. Good for you for making it what you want!

PS nice descrip & phototorial, thanks for taking the time to post the process.
 

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Pretty ballzy though, cutting a ti exhaust can from a $2,400.00 (US) exhaust sys.
Thats EXACTLY what I thought.

Well done to you. Hands of a surgeon :) I'm glad it doesn't look like that from stock or I would have been spending some wonga!
 

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I thought custom exhaust systems were tuned specifically for the engine. IE to provided right amount of back pressure etc. I'm a not an engineer by any means. Have you noticed any difference in torque or power delivery?
 

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Discussion Starter #18
Its really not a hard job. But you do have to take you time cutting to skin. The strap that you put back on covers the edge so you can be out by a mm or 2 and still look great.

I going to have to replace the sticker. It just does not look right. It needs to be further back.

As for HP or Torque I cant see any difference. The main back pressure is coming from where the pipe goes in to the can. It drops from about 70mm back to 50mm on the inner tube. This does not change. After that the job of the can is to stop sound by bouncing noise of the packing.

And yes before people jump on me, you do get a amount of back pressure from the drag in the inner tube but it is not great.

I was so unhappy with the look of it I had to do something. Im thinking now that it would look better if you only took off about 120mm to line it up with the hugger but that is here nor there for me.

And as a wise man on this forum said.

"LOUD PIPES SAVE LIVES"
:yeah::yeah::yeah::yeah::yeah::yeah:
 

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Looks good but only problem that I can see is that the full system runs quite rich so can see the inside of your panniers getting really black on long trips that is why I suspect the can was the length that it was.
 
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