KTM 690 enduro/SMC exhaust thread

Discussion in 'Thumpers' started by greengoose, Jul 20, 2008.

  1. fossriver

    fossriver Adventurer

    Joined:
    Aug 25, 2010
    Oddometer:
    73
    Location:
    The convergence zone
    I'm late to this party, but I drilled some extra holes in my db reducer for my Leo Vince. A few months later I wanted to try the stock db reducer again. I called up Leo Vince America, talked to some really nice people there. And they sent me one pretty quickly, for free:)
  2. emilio700

    emilio700 Adventurer

    Joined:
    May 23, 2013
    Oddometer:
    91
    Location:
    SoCal
    Well I failed at the video. Apparently my camera takes stills in video mode when you press the regular shutter release. Second release on back just for video. arg. Too lazy to put OEM back on and do it all over. Also had trouble getting precise repeatable results on the db meter.

    Anyway, some subjectective opinions and info:

    Weight
    10 lb, 2 oz OEM thermonuclear reactor and clamp
    3lb 15oz Sexy eastern bloc surplus submarine ti musical instrument
    6 lbs 2 oz weight savings. wow

    Aural violence
    Tried it with no insert. Very deep low tone, smoother sounding, really loud.

    With standard spark arrestor insert with internal screen. Higher pitch, most low frequencies muted. More of a "pop" with each combustion event.

    Ended up with db killer insert which has a few mm smaller exit aperture and additional cap covering part of internal screen. Only a little quieter than standard spark arrestor insert. Even more "pop" with combustion event. OEM sounds like "chuff - chuff - chuff" at idle and acceleration. Db killer is more of a "pop-pop-pop".

    I measured roughly 3db more sound energy both at idle and free revving to 7000rpm. That's rough though as my measurements varied a bit.

    Bacon cooking ability ... mmm bacon
    Ran the both mufflers around the hood for a while, some (many) WOT blasts.
    Measured temps with a contact pyrometer.

    320° Austrian particle accelerator
    120° former commie missile tip

    The KTM mufflercat was 320° everywhere, including the tip. At the very leading edge under the shrouds where you couldn't ever reach, one spot registered 400°. The extra strap on my spare camelback left a pile of molten goo on it from the last ride. ick

    In contrast, the Wings was pretty much 120° everywhere. One small area at the very forward cone under the shrouds measured 180~200°. The carbon tip was barely 100° even with the engine running. You could just about put your hand on the Wings even with the engine running. That's interesting since titanium has very low thermal conductivity and thermal inertia. I would expect it to heat soak and really radiate but it didn't.

    Fit & finish
    KTM - perfect
    Wings - perfect

    One nice benefit of the Wings was the offset header adapter that allows you to position the muffler a cm or so this way or that. You have some leeway which is nice if you want extra clearance for luggage racks, aux tanks and whatnot. I sprayed it with ispropyl alcohol and gave it good wipe down after install to avoid burning fingerprints onto the surface.

    Powah
    Dunno, didn't dyno it. Didn't have to recal. Runs perfect just like it did before. Still wheelies a lot? check

    I took the opportunity to fab an ugly ass heatshield out of .049 6061-T6 sheet. Saved .5 lb and make my bike look more hardcore. At last that's what I'm telling myself. Oh yeah, the new shield is much cooler to the touch than the original stainless ones. I'll probably make a new shield from .065 after a few rides with this one and shoot some clear lacquer on it. The raw aluminum will oxidize and leave grey smudges all over anything it wears against. My chain looks slack..

    [​IMG]
  3. Shadowfax38

    Shadowfax38 Adventurer

    Joined:
    Jul 15, 2013
    Oddometer:
    25
    Awseome. Thanks and ROFL.

    [​IMG]

    Vasily: But Captain...how will we get the men off the sub?

    Ramius: We will tell them that the reactor core has reached stock KTM Enduro R muffler operating temperature and there is risk of imminent meltdown!
  4. sdd04

    sdd04 Long timer

    Joined:
    Mar 5, 2012
    Oddometer:
    1,943
    Location:
    The Ozarks....SW MO, NW AR-great place to play!
    Has anyone repacked their Wings yet? If so, how many miles did you get, and how did the packing look when you got in there?

    Just trying to get an idea of when I need to get ready for that activity.

    Thanks
  5. MakoRider

    MakoRider Adventurer

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    Feb 9, 2013
    Oddometer:
    81
    Location:
    Middleburg,FL
    Good one. Too funny.:eek1
  6. MakoRider

    MakoRider Adventurer

    Joined:
    Feb 9, 2013
    Oddometer:
    81
    Location:
    Middleburg,FL
    I want to insert the smaller/quieter silencer in the WINGS exhaust. How do you take off the carbon end cap? And install the other insert?
    :stupid
  7. sdd04

    sdd04 Long timer

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    Location:
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    you don't need to remove the cap. There is a rubber plug on the bottom of the carbon piece. Remove it and using an allen wrench, remove the bolt that holds the insert. Then work the insert out-kind of a snug fit, but didn't take much effort.

    Steve
  8. ramjet

    ramjet Long timer

    Joined:
    Jul 8, 2004
    Oddometer:
    3,090
    Location:
    Super F'd Up N. California
    Had the Akra Ti muffler off yesterday, so thought I'd throw it on the scale:
    4.8 lbs Just the can with silencer tip and the small clamp.
  9. MakoRider

    MakoRider Adventurer

    Joined:
    Feb 9, 2013
    Oddometer:
    81
    Location:
    Middleburg,FL
    Thanks so much for that info. I never would have looked there. This is why I like these forums. People really help each other out. :kumbaya
  10. palmstatecrawler

    palmstatecrawler Been here awhile

    Joined:
    Apr 13, 2013
    Oddometer:
    519
    Location:
    Columbia, SC
    Still have an fmf apex for sale!
  11. Shadowfax38

    Shadowfax38 Adventurer

    Joined:
    Jul 15, 2013
    Oddometer:
    25
    Emilio700 - that's cool that you saved a half pound with that shield. I want to lighten the "junk in the trunk" as much as possible cause of the RR stuff (rear and soft luggage racks) and im getting a Coyote for camping eqiptment and will be carrying some fuel.

    I decided to use the quieter DBK also. The ECU seems to have adapted quite well and so far so good. The Wings guy thinks the quiter DBK might prolong wool life...dunno. Seems like it would retain heat more. No one has an estimate on wool life yet?

    I recorded the bike with the quieter DBK in case anyone intersted.


    http://img607.imageshack.us/img607/6851/ct1ylxzqsvzcxnifogrcfv.mp4
  12. AccelRus MaxiMus

    AccelRus MaxiMus Been here awhile

    Joined:
    Apr 27, 2013
    Oddometer:
    215
    Hey palmstatecrawler - are you using the full TI Akrapovic
    exhaust on your 2013 ?

    Like the one here: http://www.ktmtwins.com/akrapovic-ktm-690-enduro-smc-titanium-header

    I spoke to the Akrapovic US rep and he said
    that they do not know that the Ti exhaust for
    the 08-11 690's fits on the 12-13's...

    I thought I saw a post a few pages back with a
    pic of your bike with the Akra on it...

    Any issues fitting it
  13. palmstatecrawler

    palmstatecrawler Been here awhile

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    Apr 13, 2013
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    519
    Location:
    Columbia, SC
    Fits like a glove
  14. Hrspwr Hero

    Hrspwr Hero Adventurer

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    Jun 15, 2011
    Oddometer:
    81
    Location:
    Melbourne, Australia
    This may have been covered before, but I started with the flat washer with holes in it db reducer. With the akro map and that washer in, my fuel consumption went up by 2.5lt per hundred!! :eek1:eek1:eek1 Made a very different noise too.
    Swaped that out for the tail end baffle and fuel use went back to normal. Love it without any baffles but its to obnoxious for general use. Sounds awesome, like a monster truck coming thru the forest!! :rofl
  15. AccelRus MaxiMus

    AccelRus MaxiMus Been here awhile

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    Nice - good to know... :) Odd that the US Rep is in the dark about this !
  16. sk1d00

    sk1d00 n00b

    Joined:
    Oct 28, 2010
    Oddometer:
    8
    I've just bought 2012/13 690 Enduro R from a UK KTM dealer. It came fitted with the Akrapovic end-can (I have the original also).

    Questions are: I suspect this the 'race only' end-can so therefore my insurance will not cover it/me? How much of a risk am I taking using it on road? I'm thinking of swapping it back to the original before getting a legal Leo Vince. The bike is mapped for the akrapovic, anyone know how it'll run back on the OEM can with the akro mapping in place? I'm also puzzled as to why it may not a certificate, it's not loud, just fruity :-)

    Thanks in advance.
  17. fluff34567

    fluff34567 Long timer

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    Location:
    choco land AKA switzerland
    insurance - thats for your insurance company to tell you.
    risk... also your descision, and depends if plod is being a knobber and if you pass the attitude test :D

    the LV is also loud, it sounds louder than the akra TBH but of course thats by ear and not measured. try have a go on someones bike with the LV first and see if you like it its intrusive and needs use of earplugs.

    I have a paper somewhere where the LV is recorded as 98dB

    there should be a model number on the can - see if its declared as "race only"
  18. LukasM

    LukasM Long timer

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    Nov 15, 2006
    Oddometer:
    5,513
    Location:
    On a RTW ride - currently touring the U.S.
    I have seen other people engrave an E-number in their Akra, while that's illegal too, I'd say the risk of getting caught is minimal as long as you are also leaving the DB-killer in.

    If you want to be 100% legal, KTM sells an officially E-approved silencer in the Hard Parts catalog.
  19. wsmc831

    wsmc831 Long timer

    Joined:
    Jan 25, 2006
    Oddometer:
    1,010
    Location:
    Central Oregon
    Myself and another friend with a 12 have gone with the latest fmf q. Remove the ugly sticker and the can looks oem, and is just a bit louder than the pizza oven the bike came with, and much quieter than akro or lv.
  20. gen

    gen Been here awhile

    Joined:
    Mar 28, 2002
    Oddometer:
    809
    Location:
    Asia
    You mean the Q4?

    http://www.fmfracing.com/Products/BikeAsList/2009_KTM_690ENDUROR

    I'm looking to get rid of the OEM can and want the quietest aftermarket option.