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View Full Version : HOW TO MAKE A SHORTY CAN !



EXBEN
13-01-2006, 11:08 PM
http://www.streetfighters.com.au/forum/upload/101586441864640.jpg
A few weeks ago we were talkin bout makin 'Shorty' can's,so I thought I'd do a run down of what you need to do, in case anyone want's to have a go & is not sure how to attack it.
"I should at this point mention that this is NOT a be all & end all guide so if you Fuck up don't blame me"
You'll need at least a Drill & usually a 4.9mm bit,an angle grinder with a 1mm thick cutoff wheel,a flap disk for the grinder is also handy,a small punch & something to hit it with,some 4.9mm stainless rivets & pop rivet gun,a file, a texta, a tape measure & steel ruler.
I'm sure I've missed something but we'll work it out as we go along.
The can I'm cutting down here is an Akrapovic oval Titanium,similar to the one above(I forgot to take a pic before I started).
First drill the rivets out of the inlet end,sometimes the heads come off & then they just spin,you may need to punch through any stuck ones so they clear the band & the outer skin,the band should come off (take note of where the join is),the inlet end should now pull out, this will take some force & can be tricky to grip onto,I use a small steel hook to pull from the retaning spring pickups,you may need help from a friend for this step.
The perforated core is attached to the inlet end( This is not always true for all brands)& will come out with it.
Some cans may require you to drill out & remove the outlet end as well to remove the core.
If the packing doesn't come out with the core,pull it out now.

EXBEN
13-01-2006, 11:10 PM
http://www.streetfighters.com.au/forum/upload/1015864431112929.jpg
Your can should now look like this.

EXBEN
13-01-2006, 11:24 PM
http://www.streetfighters.com.au/forum/upload/1015864431104422.jpg
You can now mark how much you want to cut off the outer skin & inner core(cut the same amount off each),be sure to mark how much you want to cut off NOT how much you want left because the inner & outer are usually different lengths.
I use a height gauge but a tape measure or ruler will also work,just be sure your lines are straight.
If the inner core steps down or up in diameter at the end you want to cut off you may need to grind off the welds at the other end & shorten it there then have it welded back on.
This one was nice & straight.

EXBEN
13-01-2006, 11:28 PM
http://www.streetfighters.com.au/forum/upload/1015864431111680.jpg
Now use your grinder with the 1mm cutoff wheel & carefully cut both the inner & outer ( on the rubbish side of the line please).

EXBEN
13-01-2006, 11:32 PM
http://www.streetfighters.com.au/forum/upload/1015864431125227.jpg
Now clean up the ends,I use a disk sander but a Grinder with a flap disk will also work. Then debur the edges inside & out ,using a flap wheel or file.

EXBEN
13-01-2006, 11:38 PM
http://www.streetfighters.com.au/forum/upload/1015864431178519.jpg
If the packing is in good nick you can use the cutoff wheel( as it gives a nice cut), to cut the same amount off,if your packing is stuffed you can get more from most bike shops.

EXBEN
13-01-2006, 11:57 PM
http://www.streetfighters.com.au/forum/upload/1015864431111134.jpg
Now carefully refit the packing to the inner core & feed the whole lot into the outer skin ( make sure you have the end cap around the right way).You may need to deform the skin slightly with your hand to get it to go over the end cap,at the same time look inside the outlet end & make sure the core is lining up with the end cap before you start trying to force them together.
Now push or lightly tap them together so that you can still see part of the rivet holes.
Line the band up with the end of the outer skin( Making sure you've got the join in the right spot),then mark the rivet holes onto the skin with a texta ( don't drill them yet).

EXBEN
14-01-2006, 12:07 AM
http://www.streetfighters.com.au/forum/upload/1015864431119663.jpg
Tap the end cap in till it's in the right spot then drill the hole through the skin (with your 4.9mm bit)opposite to where the band join is.
Rivet this one in place. Now work your way around evenly both ways drilling & riveting as you go.
I do it like this cause when you get to the last hole it can be out to where your texta mark is( your only using the texta marks as a guide).If you had drilled this previously when you put the rivet in it will want to lift the band off the skin in some spots & it looks like shit.

EXBEN
14-01-2006, 12:14 AM
http://www.streetfighters.com.au/forum/upload/101586443186327.jpg
So you should end up with something like this (no gaps).
That's it you now have a shorty can!
This one started out at 470mm (Skin length) & we cut off 170mm
giving us a nice short 300mm can.
The only question now is how short will you go!
Cheers

EXBEN
14-01-2006, 12:16 AM
http://www.streetfighters.com.au/forum/upload/101586443159552.jpg
MMMMM.........170mm can anyone?

Gix11
14-01-2006, 12:17 AM
I changed what I've written 'cause I'm pissed, but cheers Ben, this is the shit we're looking for and your "HOW TO" is up and active in the main website section. Cheers mate. Who's you're photographer?

EXBEN
14-01-2006, 12:19 AM
Cheers Gix I was bored the other day & thought I'd do something constructive.

EXBEN
14-01-2006, 07:38 AM
quote:Gix11 Posted - 14 Jan 2006 : 01:17:45
--------------------------------------------------------------------------------
I changed what I've written 'cause I'm pissed, but cheers Ben, this is the shit we're looking for and your "HOW TO" is up and active in the main website section. Cheers mate. Who's you're photographer?
Ummm......my tripod.

Deano
14-01-2006, 08:24 AM
thank Ben that guide will come in very handy soon.

is there a rule of thumb for length to loudness. eg: if you cut off 25% of the lenght it will be 25% louder?

fimpBIKES
14-01-2006, 09:29 AM
decibels are funny things i dunno deano
but u would have 25% less restriction, which is always nice ;)

thats handy stuff Exben!!!!
i have a carbon MIVV for the sv that i dropped and the front 80mm (at least) needs to get cut off to make it look pretty again

how thick would u say the bands are? i have some aluminium flashing (0.6mm i think)
think that would be thick enuff? old one is rooted :(

Iceman
14-01-2006, 01:38 PM
That looks pretty technical. When we did mine we chucked all that shit out of the middle away and made a small bolt in baffle for the end.

Iceman
14-01-2006, 02:18 PM
http://www.streetfighters.com.au/forum/upload/5812193766496.jpg
For those of you who don't have acess to a real workshop, but can get your hands on a welder, a grinder, a drill and some pipe.
The baffle simple inserts into the noisy and is bolted on.

Warning this effectivly make your muffler ornimental![8D]

Gix11
14-01-2006, 05:10 PM
The magician's glove is scaring me........

dRRew
14-01-2006, 09:50 PM
hell yeah ben this is awesome. Ive got an old stock pipe ive polished so i think its time to give it the chop! i cant believe its as easy at this! cheers ben.

EXBEN
14-01-2006, 10:27 PM
This method is for aftermarket straight through can's only,stock cans are full of baffles & are usually a prick to get apart without damaging them (cause they are not designed to come apart for repacking)

EXBEN
14-01-2006, 10:42 PM
Fimp,personally I wouldn't use aluminium for the bands,all bands on can's are either stainless or Ti cause their purpose is to act like a clamp around the skin to keep it tight on the end cap,.8-1mm stainless is fine. On a carbon can you should use a smear of copper,red or black silicone around the end cap before pushing the skin into place,this takes some of the load off the rivets & there's less chance of the carbon wearing loose because of heat & vibration.
Cheers

fimpBIKES
15-01-2006, 02:05 AM
thanks again ben,
will drop into bunnings and see if i can find some kinda suitable material tomorrow

i have some of that gasket stuff, shall use liberally ;)

fimpBIKES
25-01-2006, 12:09 AM
here is my effort

280 glorious millimetres of FUKKIN LOUDNESS

http://www.streetfighters.com.au/forum/upload/81508600395348.jpg

took a numpty like me about 4 hours, front strip is actually packing strip (spring steel)

this can was rashed up on the front before hand so all that nasty carbon got the BOOOOT

fimpBIKES
25-01-2006, 12:10 AM
oh, and MIVV cans have the inner pipe attached to the back if anyone wants to know

didnt make much difference anyways
THANKS EXBEN!!!

Stocky
25-01-2006, 08:13 AM
Anyone need a pipe ? I've got a Yoshi RS3 SS pipe 2nd hand lying around that would be awesome cut down.

It's got a tiny dint (from a rock) in the bit you'd chop off .

This post has got me all inspired

fimpBIKES
25-01-2006, 08:26 AM
what side is it off?

i need the front bit/inlet pipe off a yoshi can (preferably carbon, but meh...)
what is the inlet diameter?

Stocky
26-01-2006, 08:56 PM
It's a right side, it's SS , it's 57mm inlet

Jaded
30-01-2006, 05:45 PM
Thanks a heap Ben for the How-to. I thought Id try it on my el cheapo can and ended up cutting close to 200mm off. It wasnt too difficult when following your instructions. Still gotta finish it off tomorrow and polish it up, but I thought Id just put it on to see how it looks and sounds. Good on both counts!

http://img.photobucket.com/albums/v622/retrozedual/01300001.jpg

gibbo
30-01-2006, 07:21 PM
Hey Stocky, do you have a pic of the yoshi can?

EXBEN
30-01-2006, 10:34 PM
Looks good Popcorn.;)

speeddemon
01-02-2006, 03:52 PM
Got my thin cutter blade ready for some action!

Comming soon - Me and Mr Chadams will be butchering a stock Z750 pipe and my Carbon Yoshi for the bandit. The Z pipe is gona be spasticly short.

Large
19-03-2006, 05:52 PM
http://i52.photobucket.com/albums/g38/ahq51e/DSC00175.jpg
http://i52.photobucket.com/albums/g38/ahq51e/DSC00176.jpg
:D:D

Large
19-03-2006, 05:52 PM
http://i52.photobucket.com/albums/g38/ahq51e/DSC00175.jpg
http://i52.photobucket.com/albums/g38/ahq51e/DSC00176.jpg
:D:D

3AMcobra
29-03-2006, 10:37 PM
quote:Originally posted by fimpBIKES

here is my effort

280 glorious millimetres of FUKKIN LOUDNESS

http://www.streetfighters.com.au/forum/upload/81508600395348.jpg

took a numpty like me about 4 hours, front strip is actually packing strip (spring steel)

this can was rashed up on the front before hand so all that nasty carbon got the BOOOOT



Oh cmon, dolphins! This is a streetfighter website :D j/k

3AMcobra
29-03-2006, 10:37 PM
quote:Originally posted by fimpBIKES

here is my effort

280 glorious millimetres of FUKKIN LOUDNESS

http://www.streetfighters.com.au/forum/upload/81508600395348.jpg

took a numpty like me about 4 hours, front strip is actually packing strip (spring steel)

this can was rashed up on the front before hand so all that nasty carbon got the BOOOOT



Oh cmon, dolphins! This is a streetfighter website :D j/k

Gix11
29-03-2006, 11:05 PM
Yea, gotta watch Fimp man. I think that's even an "ironing board". Heard about those things, no idea what they do though.

Gix11
29-03-2006, 11:05 PM
Yea, gotta watch Fimp man. I think that's even an "ironing board". Heard about those things, no idea what they do though.

BOHEMION
29-03-2006, 11:15 PM
Something to do with metal and wood GIX Deeeerrrr! dont you know anything!!!

BOHEMION
29-03-2006, 11:15 PM
Something to do with metal and wood GIX Deeeerrrr! dont you know anything!!!

fimpBIKES
30-03-2006, 11:49 AM
settle down ladies

only a few more days til i let you ream out my can for $50 a go!!! [:P]

fimpBIKES
30-03-2006, 11:49 AM
settle down ladies

only a few more days til i let you ream out my can for $50 a go!!! [:P]

clairebear
30-03-2006, 01:45 PM
so Benny...did ya do this first go on the Akrapovic?
does that mean you are rich, or just fully confident in your skill
and ability?
it looks great!

clairebear
30-03-2006, 01:45 PM
so Benny...did ya do this first go on the Akrapovic?
does that mean you are rich, or just fully confident in your skill
and ability?
it looks great!

EXBEN
30-03-2006, 07:27 PM
Nah Claire, just put a grinder in my hand & I'll chop into anything.:D

EXBEN
30-03-2006, 07:27 PM
Nah Claire, just put a grinder in my hand & I'll chop into anything.:D

clairebear
31-03-2006, 07:37 AM
Cool, i'll remember that when its time to extract the ford keys from mr Bears cold dead hands.
bloody fords.
its wicked anyway and has obviously inspired a few of us!

clairebear
31-03-2006, 07:37 AM
Cool, i'll remember that when its time to extract the ford keys from mr Bears cold dead hands.
bloody fords.
its wicked anyway and has obviously inspired a few of us!

pesh
31-03-2006, 09:01 PM
http://www.streetfighters.com.au/forum/upload/75653838921333.jpg

here's my 2 attempts they measure in at 27 cm each and you have gota love the amount of noise these baby's put out

pesh
31-03-2006, 09:01 PM
http://www.streetfighters.com.au/forum/upload/75653838921333.jpg

here's my 2 attempts they measure in at 27 cm each and you have gota love the amount of noise these baby's put out

dinorider
01-04-2006, 01:11 AM
chopped mine 6 odd months ago and gutted it for a result of about 4000 decibels.pinged its head off till I rejetted.was wondering if the others who have done the chop have had to rejet.Me being the ME i got out the old jet drills and took em out a poofteenth.ah shit did I just type that.LOUD PIPES SAVE LIVES.When constable care gets an 11 second chaser he can tell me its too loud!............(I could smell what you were all thinking)forgive me for the ramblings too much beer and and and mind expander.can`t see screen an mot,./3%&*)one hand got thrrkljP;O

dinorider
01-04-2006, 01:11 AM
chopped mine 6 odd months ago and gutted it for a result of about 4000 decibels.pinged its head off till I rejetted.was wondering if the others who have done the chop have had to rejet.Me being the ME i got out the old jet drills and took em out a poofteenth.ah shit did I just type that.LOUD PIPES SAVE LIVES.When constable care gets an 11 second chaser he can tell me its too loud!............(I could smell what you were all thinking)forgive me for the ramblings too much beer and and and mind expander.can`t see screen an mot,./3%&*)one hand got thrrkljP;O

dinorider
01-04-2006, 09:53 AM
http://www.streetfighters.com.au/forum/upload/75653838642938.JPG

cut about 2 inches off the end just to clean it up a bit.

dinorider
01-04-2006, 09:53 AM
http://www.streetfighters.com.au/forum/upload/75653838642938.JPG

cut about 2 inches off the end just to clean it up a bit.

dinorider
01-04-2006, 09:55 AM
http://www.streetfighters.com.au/forum/upload/75653838633505.JPG
rivetted the end back on with no glass packing.fucken loud and the neighbors love me.

dinorider
01-04-2006, 09:55 AM
http://www.streetfighters.com.au/forum/upload/75653838633505.JPG
rivetted the end back on with no glass packing.fucken loud and the neighbors love me.

fimpBIKES
03-04-2006, 12:45 PM
yep, i think i shall be doing that to the kat's pipe ASAP!!!

fimpBIKES
03-04-2006, 12:45 PM
yep, i think i shall be doing that to the kat's pipe ASAP!!!

veetwo tls
04-04-2006, 10:25 PM
hay fimp got my custom made pipes coming from bernhard in germany.
45-48-52-57-60mm slip on.
then ill get these cans to go on.
http://www.postwhore.biz/albums/userpics/10073/normal_ATVTRSKFX700full.jpg (http://www.postwhore.biz/albums/userpics/10073/ATVTRSKFX700full.jpg)


my chop effort.
http://www.postwhore.biz/albums/userpics/10073/normal_MY%20TLS%20_1_.JPG (http://www.postwhore.biz/albums/userpics/10073/MY%20TLS%20_1_.JPG)

veetwo tls
04-04-2006, 10:25 PM
hay fimp got my custom made pipes coming from bernhard in germany.
45-48-52-57-60mm slip on.
then ill get these cans to go on.
http://www.postwhore.biz/albums/userpics/10073/normal_ATVTRSKFX700full.jpg (http://www.postwhore.biz/albums/userpics/10073/ATVTRSKFX700full.jpg)


my chop effort.
http://www.postwhore.biz/albums/userpics/10073/normal_MY%20TLS%20_1_.JPG (http://www.postwhore.biz/albums/userpics/10073/MY%20TLS%20_1_.JPG)

fimpBIKES
04-04-2006, 11:23 PM
nice one!!!
so you arent putting the shortened cans on the new headers?

WTF not? :(

fimpBIKES
04-04-2006, 11:23 PM
nice one!!!
so you arent putting the shortened cans on the new headers?

WTF not? :(

veetwo tls
05-04-2006, 11:24 AM
optional i'll have both to choose from.
those TRS cans are shorter than your average road bike mufflers there for a 4 wheeler.

veetwo tls
05-04-2006, 11:24 AM
optional i'll have both to choose from.
those TRS cans are shorter than your average road bike mufflers there for a 4 wheeler.

sluglie
05-04-2006, 01:18 PM
http://www.streetfighters.com.au/forum/upload/28600586881052.JPG

how to make a short arse viper can even smaller, dunno how much was cut off but the thing is now tiny (260mm long [:p]) and yes i had to rejet it (especially after i ripped out the airbox and put pods on the back of the carbies):D

sluglie
05-04-2006, 01:18 PM
http://www.streetfighters.com.au/forum/upload/28600586881052.JPG

how to make a short arse viper can even smaller, dunno how much was cut off but the thing is now tiny (260mm long [:p]) and yes i had to rejet it (especially after i ripped out the airbox and put pods on the back of the carbies):D

Gix11
05-04-2006, 01:29 PM
That looks bloody great Sluglie. Love it.

Gix11
05-04-2006, 01:29 PM
That looks bloody great Sluglie. Love it.

fimpBIKES
05-04-2006, 05:27 PM
that looks SWEET!!
i think i'll have to shorty the carbon yoshi can on the kat to clear the rear axle nut
what a pity.... :D

fimpBIKES
05-04-2006, 05:27 PM
that looks SWEET!!
i think i'll have to shorty the carbon yoshi can on the kat to clear the rear axle nut
what a pity.... :D

UP ON 1
23-04-2006, 07:33 PM
Thanks EXBEN you're the man.:D
http://img147.imageshack.us/img147/6349/15012006z10000068dm.jpg

UP ON 1
23-04-2006, 07:33 PM
Thanks EXBEN you're the man.:D
http://img147.imageshack.us/img147/6349/15012006z10000068dm.jpg

Tony Nitrous
23-04-2006, 07:51 PM
quote:Originally posted by GSXR 600

Thanks EXBEN you're the man.:D


Well Done Brian, Can looks good [8D]
Glad to hear it still runs fine.
and Welcome to the "not so sensible" side of Motorcycling :D
Plenty of Suzuki fans here mate ;)

Tony.J.

Tony Nitrous
23-04-2006, 07:51 PM
quote:Originally posted by GSXR 600

Thanks EXBEN you're the man.:D


Well Done Brian, Can looks good [8D]
Glad to hear it still runs fine.
and Welcome to the "not so sensible" side of Motorcycling :D
Plenty of Suzuki fans here mate ;)

Tony.J.

UP ON 1
23-04-2006, 08:06 PM
quote:Originally posted by Tony Nitrous
Welcome to the "not so sensible" side of Motorcycling :D
Tony.J.

Thanks mate I have been lurking here for a while now.
And had to come out and give credit to Ben I could not of done it without his post so thanks again Ben.[8D]

UP ON 1
23-04-2006, 08:06 PM
quote:Originally posted by Tony Nitrous
Welcome to the "not so sensible" side of Motorcycling :D
Tony.J.

Thanks mate I have been lurking here for a while now.
And had to come out and give credit to Ben I could not of done it without his post so thanks again Ben.[8D]

23-04-2006, 08:26 PM
welcome Brian,you have much to learn grasshopper.But you can start by putting your fairings in storage.

23-04-2006, 08:26 PM
welcome Brian,you have much to learn grasshopper.But you can start by putting your fairings in storage.

Gsxar
26-04-2006, 02:27 PM
http://www.streetfighters.com.au/forum/upload/90280622884116.jpg

:D Thanks to Ben's xlent tutorial.
I had a dodgy looking pipe laying around that was way long and very ugly. So I thought it would make a good donor to have a try.
Got out the angle grinder [8D]Cut it up,paint stripped it and polished it up.
Any mistakes....ummmmm I ment lol [:p]
Very proud of my little effort I did it all by myself.:D
Not sure if I will use it was just to have a practice go.Haven't tried it on the bike yet so not sure how loud it is.

Gsxar
26-04-2006, 02:27 PM
http://www.streetfighters.com.au/forum/upload/90280622884116.jpg

:D Thanks to Ben's xlent tutorial.
I had a dodgy looking pipe laying around that was way long and very ugly. So I thought it would make a good donor to have a try.
Got out the angle grinder [8D]Cut it up,paint stripped it and polished it up.
Any mistakes....ummmmm I ment lol [:p]
Very proud of my little effort I did it all by myself.:D
Not sure if I will use it was just to have a practice go.Haven't tried it on the bike yet so not sure how loud it is.

Gix11
26-04-2006, 02:39 PM
I can tell you that will be "F" rated in the loud department.....

Gix11
26-04-2006, 02:39 PM
I can tell you that will be "F" rated in the loud department.....

Deano
26-04-2006, 05:14 PM
seems like short load cans are all the rage.

i might start a new trend - long and quite cans
just to be different.

who is with me?

Deano
26-04-2006, 05:14 PM
seems like short load cans are all the rage.

i might start a new trend - long and quite cans
just to be different.

who is with me?

dinorider
26-04-2006, 05:36 PM
short load,had that problem long Davo?:D

dinorider
26-04-2006, 05:36 PM
short load,had that problem long Davo?:D

TurboKat
26-04-2006, 09:59 PM
Still looks a bit long to me Jo ;)

TurboKat
26-04-2006, 09:59 PM
Still looks a bit long to me Jo ;)