stubby exhaust (+ and -'s)

[barwel1992]

ok so im thinking about stubbing my exhaust but be for i even get that far there are a few things i want to know E.G apparently they perform less so than full length exhausts, Is my renegade Hi level (race) can good or bad ? and will stubbing it make it worse than it already is

and not relay about stubbing but if a remove the packing how loud will it be (standard length)


my can

http://i357.photobucket.com/albums/oo16/barwell1992/moddedwheels.jpg

[speedplay]

I had the renegade system on my curvy and then the pointy (now on moojuicepez's pointy) and I liked the way it sounded as it was.

I'm not a fan of stubby cans though but each to their own I guess.

[zsv650]

i can see them performing worse than a full length can wether you'd notice that is a question somebody who's got a stubby can could answer look's wise i think they look scruffy.

[Richie]

That can at high level like that needs Stubbing..

As Y.c. says stubbied end cans do frig all for back pressure so no difference in performance.

before.
http://img301.imageshack.us/img301/5251/stubbiedu5.jpg

after

http://img341.imageshack.us/img341/6522/stubbie18sf0.jpg

and how much we removed.... 183mm

http://img301.imageshack.us/img301/8703/stubbie5az4.jpg

Looks much nicer and more balanced with the start in the middle...
Sounds SWEET Too.

also get an extender fender fitted to that from mudguard !

[yorkie_chris]

I said they make no difference to backpressure, they do change things though it's more down to resonance and scavenging.

Depends, I wouldn't expect it to make any odds on a standard system though. As you say you had good results on your pointy.

I reckon you could take a good couple of inch off that can with no difference to running.

[barwel1992]

ohh that looks nice :) hmm i think i will do that, maybe not as severe as that though

as my can bolts together (end holds the bolt rods and bottom holds nuts "pressure fit" ) i need to see if the threads on the bolts go all the way down or if they stop so far down if they do not sure how im going to add more thread?

and i dont relay fancy drilling my carbon fender to add a extender

ok cheers YC a couple of inch is what i was thinking rather than a foot

[Richie]

and i dont relay fancy drilling my carbon fender to add a extender


Silicone sealant / selastic ... not need for drilling my Boy....:thumbsup:

[sz1]

look good sound ace.down side butchering a good can , do what i did buy a cheap can off e bay damaged butcher it up don't like bay it on like it winner cans with rivet on ends are easy to do all i did was put full can in metal saw chop re drill and rivet backup also added a bit more packing also i drew lines from exit end to inlet end rivets to keep it all square once you have chopped and took exit end off then cap you can see haw depth to center your drill holes for putting cap back on think mine was a viper just did hole centers 5mm back . think i paid 14 pound for it to me door btw

[speedplay]

after

http://img341.imageshack.us/img341/6522/stubbie18sf0.jpg




Looks crap ;)

[barwel1992]

^ lol

and im only planning on taking about 4-5inch off Max

[DavieSV]

stubbied mine with no ill effects

I do run mine with the baffles in. It seems to run smoother, not too loud and in my opinion sounds ace:D

[Taipan]

I replaced the hi mount Renegade with a Scorpion Street Extreme as I prefer the look of the stubby and found the Renegade looked old fashioned, eye of the beholder and all that. Performance wise I wont worry to much. I'm more concerned with how my bike makes its power than a few BHP either way.:)

http://img519.imageshack.us/img519/1120/p1040709c.jpg

http://img412.imageshack.us/img412/3003/imgp3945.jpg

[speedplay]

I prefer the look of the stubby and found the Renegade looked old fashioned, eye of the beholder and all that.

Isn't the curvy old fashioned too though?

[xXBADGERXx]

ohh that looks nice :) hmm i think i will do that, maybe not as severe as that though

as my can bolts together (end holds the bolt rods and bottom holds nuts "pressure fit" ) i need to see if the threads on the bolts go all the way down or if they stop so far down if they do not sure how im going to add more thread?

and i dont relay fancy drilling my carbon fender to add a extender

ok cheers YC a couple of inch is what i was thinking rather than a foot


If the bolt is not shouldered at all you can run a "Die" along it and cut more thread into the bolt . If it is shouldered then you would be better off putting the bolt onto a lathe and turning the shoulder down a bit and then cutting a new thread into it . This is mere minutes work for an engineering company . If you are gonna stubby that , I would cut the can down so it`s the same distance to your number plate then fit the end on so that the exit port is after the number plate . Not too stubby and not too long either .

[yorkie_chris]

Probably cheaper to buy some threaded rod than pay to get it turned down. Unless you know someone who'll do it for a pint or whatever...

[xXBADGERXx]

Probably cheaper to buy some threaded rod than pay to get it turned down. Unless you know someone who'll do it for a pint or whatever...

Depends on what it looks like cosmetically , if the rods have a button head or something that shows on the outside then it`s a tidier job in the way I mentioned , if they are not on show then some threaded stud would suffice . Even cheaper again is to cut a few inches out with angle grinder on shouldered part and weld the 2 bits back together . Takes about 2 minutes in total per rod .

[yorkie_chris]

True. I'd probably go for the angle grinder approach. Seems to work with everything else

[xXBADGERXx]

To be honest , so would I . Pop kettle on , Grind 2 inches out of bolts . Put bag in cup and add hot water , fire welder up , Tack the rods together , turn welder off . Remove bag from cup and add Milk/Sugar/Biscuits and wait for rods to cool and drink beverage ........... Job done .

[barwel1992]

lmao you to make it sound so so easy, apart from one flaw in you plan ..... i don't have a welder lol

i will crack open the exhaust to day and take some pics and see what you think

[xXBADGERXx]

lmao you to make it sound so so easy

I`m an Engineer mate , making a brew is second to nature

[barwel1992]

haha :D yeh well all know you "engineer's" like tea ...

[xXBADGERXx]

And Biscuits

Notice time taken to respond here

[barwel1992]

lmao

hmm realy should get out of bed...

[Taipan]

Isn't the curvy old fashioned too though?

True. :)

[barwel1992]

well i took the thing apart and the bolts are welded about 2 inch from the bottom of the perforated tube and pent out like prongs then they pass through the bottom plate and then bolt tight

also the end plate and out let are welded to the perforated tube (bolts are at the opposite end of the tube)

so if i had a welder it would be a easy job but i dont have a welder so its not a job i can do but i did remove the packing a it sound bloody fierce but have put SOME of it back in but even with half of what was in there its still the same sound as tightly packed ? would have thought it would be louder

can damage be cause from not having any packing in the exhaust ? as i does get hotter than before, i was thinking about just lining the inside of the can with packing to stop the heat and have none around the perforated tube would still increase the noise i think and keep the heat from the exhaust casing

[yorkie_chris]

Runs badly without packing due to resonant effects I think, though it does sound very pleasantly aggressive. With the micron pipe I noticed a significant smoothing of the power curve with packing in the can.

[xXBADGERXx]

Barwel , think of it like this . If it was not entirely necessary then the manufacturers would not put it there in the first place so sometimes it is best to leave alone . If it can be removed on a bike , then 9 times out of 10 it needs replacing with an alternative or something better . What I would do is sell the can complete and then go and buy something already stubby and fruitier sounding .

[ging6996]

ok i no its not a sv but its my r6.

this is the exhaust from how the guy advertised it. i never kept it on as i prefereed the standard exhaust to that 1.
http://i303.photobucket.com/albums/nn156/ging6996/BTZ2E7QBGkKGrHgoH-DUEjlLlypo6BKIUEw.jpg

[xXBADGERXx]

Sorry ging but that is absolutely abysmal looking and you made the right choice I think in sticking another one on . Totally spoils the lines of the bike at the back , I prefer the look of small side exits pipes on the R range or even a skinny pipe down the side as normal , great big fat Hi-level Micron just looks steeeeeeoooooopid .

http://www.orientexpress.com/images/VHRYamaha/VHR-45503-800aw.jpg

[ging6996]

then i brought a gp can. and that was rediculously loud (with the baffle in) so again i went back to standard
http://i303.photobucket.com/albums/nn156/ging6996/r6gp.jpg



the standard exhaust
http://i303.photobucket.com/albums/nn156/ging6996/r6standard.jpg






and then i stubbied the standard exhaust. i cut 8.5" off it. and it made it sou nd so much nicer. loud but not to loud. and it only cost me £3.99 for the pop riveter from aldi.
http://i303.photobucket.com/albums/nn156/ging6996/r6stubbystandard.jpg

[ging6996]

[QUOTE=xXBADGERXx;2123898]Sorry ging but that is absolutely abysmal looking and you made the right choice I think in sticking another one on . Totally spoils the lines of the bike at the back , I prefer the look of small side exits pipes on the R range or even a skinny pipe down the side as normal , great big fat Hi-level Micron just looks steeeeeeoooooopid .





i looked at them side exhausts but there are too loud again. n the micron exhaust its realy realy awful. got £60 for it on ebay tho.
graham

[barwel1992]

you make a very good point there badger, the only reason i haven't packed the pipe full is because the packing has shall we say disintegrated lol well it has on the inlet end so i have flipped the packing round so the better stuff is on the inlet side and then added strips of what is left of the good stuff to the outlet end i will replace the packing at some point but not at the moment as i don't have any cash

and wtf is with that micron its huuugggeee

[xXBADGERXx]

I run a Titanium Scorpion Street Extreme which is very throaty with the baffle in . On SV meets I whip that baffle out and it`s bloody loud . Proper "Car Alarms going off" loud . I set off 2 or 3 alarms on my street giving it a smooth rumble past some parked motors one morning and not even doing any more speed than 20 mph . I wear ear plugs on Motorways etc with it . To be perfectly honest , great having a loud can and all that , but it does get tiresome so I reserve it for SV tear ups and motorway jaunts (very handy for filtering as well as the sound reaches car drivers quite quickly in enclosed filtering situations)

[barwel1992]

well i wouldn't exactly say my can is quiet lol but you realy should hear the sweet sweet music it makes without the wadding lol, and i dont have a baffle so mines loud all the time, mind you at least it doesn't scream like the il4's

i may decide to look at getting a carbon fibre exhaust :D

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=150390434080&ssPageName=STRK:MEWAX:IT
something like that :D

[ging6996]

i always thought twins were realy loud up close but not as loud say accross the road. n IL4's are the opposite. not as quite close up but you can hear them a mile off.

graham

[barwel1992]

^ id agree with that i think its something to do with the lower pitch sound waves of a twin :/

[yorkie_chris]

Apparently you could hear mine a mile off (literally) with the stubby on.

[barwel1992]

^ lol i have seen that vid :D of your bike going up a mountain bloody loud

[yorkie_chris]

Nah that's with the full M4 system, that's quiet.

Before that I had a full micron system and a shorty fuel can, which had blown all its stuffing out. When I overtook dissuade and a few other people apparently it was physically painful for about 100 yards at full chat.

small taster at start ... rest of vid ok too but no good soundbites lol
http://www.youtube.com/watch?v=w-5lxYbGdCw

[Richie]

sweet sounding Stubbied Art Race (http://www.youtube.com/watch?v=jcv__uZhuyE)end can.

[CheGuevara]

Stubbied cans remind me of fart-cans on chav hatchbacks. Maybe a couple of inches off, but the really short ones look like something cheap from the shiny-aisle at Halfords. About as cool as carbon fibre stickers and neon lighting.

I like the GP-style megaphones, but I'd be embarrassed about the apparent excessive noise (desperately screams "Look at me on my big bad 65hp beast!"). As I understand it they're completely useless as a functioning megaphone with a core fitted -so it would really be aesthetics and a carp-load of noise.

[barwel1992]

Nah that's with the full M4 system, that's quiet.

Before that I had a full micron system and a shorty fuel can, which had blown all its stuffing out. When I overtook dissuade and a few other people apparently it was physically painful for about 100 yards at full chat.

small taster at start ... rest of vid ok too but no good soundbites lol
http://www.youtube.com/watch?v=w-5lxYbGdCw

thats what mine sounds like without the packing in it... such a nice sound lol

wish i could run it without the packing althogh i would have to carry a DB killer with me as its a wee bit to noisy at 10pm lol

[Dave20046]

ok so im thinking about stubbing my exhaust but be for i even get that far there are a few things i want to know E.G apparently they perform less so than full length exhausts, Is my renegade Hi level (race) can good or bad ? and will stubbing it make it worse than it already is

and not relay about stubbing but if a remove the packing how loud will it be (standard length)


my can

http://i357.photobucket.com/albums/oo16/barwell1992/moddedwheels.jpg

barwell, what link pipe is that? Do you know?

[Stonesie]

I liked my stubby a lot more then the little old dear's over the road, It was not on for long before it was sold on here IIRC.

http://youtu.be/DNyGiYXaT6o

http://img708.imageshack.us/img708/8762/imag0055xm.jpg

[cazzie]

On buying an SV,i had one main aim,to get rid of the ugly great 'Drainpipe' hanging off the side.I've never liked massive great 'Dog Catcher'exhausts,[as they were known in our area],mind wanders back to the days of the MZs. So as soon as the 1 year warranty was up, it came off. I'd bought a FUEL, oval, 'carbon look', 450mm long can.at the N.E.C. the previous winter. I wasn't looking for noise , just looks, and boy did it look good! It has got a great sound as well. I weighed both silencers and the FUEL was exactly Half the weight of the original. I have noticed no difference at all in performance,[although the mini twin boys seem to go for a longer pipe]. Thats me done , hope i haven't trod on anyones tootsies. Caz

[bigbill]

i have a 10inch micron on my pointy sound the f*****g dogs and looks better and if anything made mine alittle pokeyer on the acceleration not to mention the BANGS CRACKELS POPS FLAMES:smt068

[Serdna]

http://img341.imageshack.us/img341/6522/stubbie18sf0.jpg



Where can i get an exhaust heat shield like the one on this link pipe?