Shortening silencer, advantages?

['00 WO-YA!]

Just a thought on shortening the Trapp, it's long & gets black nasty residue all over the grab bar, then either I or the Mrs. Put our hands in it. Now, for me personally it's no biggie, my hands are dirty/greasy everyday! For her, well, she's disgusted by it, lol!

Anyway, I've read that shortening the sliencer can enhance low end torque, I know, it's gonna make it loud as hell, the question is how much should I try to shorten it? Or should I?

 

[MotoArts]

Fab a tin deflector between the bar and can. Clamp on to the body, or maybe use the disc bolts. I think they (Supertrapp) used to market a bolt on for street bike applications.

Edit: Like this'un -
https://www.denniskirk.com/25986.sku?utm_source=shopzilla&utm_medium=cse

 

[beastlywarrior228]

Na it doesnt make much of a difference

 

[rappy'97]

I'd shorten it 4-5 inches. You will gain alot of top end, longer means more bottom end...

 

[buzzy613]

and alot more noise

 

[rappy'97]

I have Also noticed most people think that short cans give you more bottom end, which makes no sence to me. There would bee more restriction/backpressure with a longer pipe, and less restriction/backpressure with a short pipe. With drag pipes on a 4-stroke, they are shorter, and they give you a TON of top end. And less bottom end, because if you are a drag racer, because power at 4,000 RPM doesn't really matter.

 

['00 WO-YA!]

I'd like to shorten it down a couple inches just because I can't get it apart right now & I'D like to repack it. It would also prevent it from getting torn up from willies or some other non-driver. We'll see, I hear there's a lil power from repacking so I'd like to try. I like experimenting with lil stuff like this.

 

[duneracerweston]

Cool get to it lol I want to know how this goes I want to shorten mine by 2 inches

 

['00 WO-YA!]

Lol, sure, make me the guinea pig!

 

[elwood]

there is a thread somewhere in here on how to do it and the difference it made

 

['00 WO-YA!]

Key words to the search are the hard part, wish I knew which thread it was.

 

[elwood]

here are some trheads about it, the 1st link has a link on the last page about doing it to a street bike, when I took mine apart to repack I was going to try it but even though my silencer is VERY long only about half accually gets packed the rest is a cone and stuff for the quiet core.
http://www.yfm350.com/forums/showthread.php?t=21871&highlight=shortening

http://www.yfm350.com/forums/showthread.php?t=13801&highlight=shortening

 

[duneracerweston]

I think people dont understand the ideas of shortening the scilencer and how it increases flow on a 2 stroke its a huge difference shortening the scilencer

 

[buzzy613]

is it i thought it just was more noise, i knew flow, but i didnt know it made a difference

 

[duneracerweston]

on 2 strokes its like going from a stock exhaust to a full aftermarket its a huge difference on 2 banggers i haven't tried it on mine im going to leave mine as is for now i like the torque when im in the dunes

 

[buzzy613]

hmmm i know what im doing to my 250r lol