Gentlemen, remove your plumbing!!

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by Katoum, May 20, 2004.

  1. Katoum

    Katoum Adventurer

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    760
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    While, its all old news now but I thought I would post a picture of just what comes off after a total SASectomy and Canisteronomy. Total weight reduction by goverment approved postage machine was 1342 gram reduction. This combined with carb needle raised, and fuel screws at 21/2 turns has for me IMHO totally transformed the way the 950 performs. There is no more sudden die syndrome after parked hot for a period, no more surging at steady throttle around 3500-4000 RPM and starts first time every time hot or cold. There's been a lot of discussion on how all these systems interact and what cause's what, but is no denying the fact it plain kicks ass with all the shit removed. As a side benefit with the Akro's it used to sound kind of like a H-D popping on deceleration, now mine is totally pop free and has taken on more of a Ducati sound, I like it.
    PS I picked up extra Blanking Plates today so if you need some please read the post by doing a search on Blanking Plates.
    Cheers,
    Katoum :freaky

    Attached Files:

    #1
  2. motozilla

    motozilla Long timer

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    What are these things circled??? I don't recall them when I did my canister/SAS/EPC-ectomy....
    #2
  3. Shuffler

    Shuffler Hommes Grande

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    Paul, those are Mikuni carb valves that are part of the canister system on some later model 950s (like mine). They're not worth shit which is why they need to be yanked. Some canister systems have them, others don't.
    #3
  4. Katoum

    Katoum Adventurer

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    These are called vacuum air valves to the best of my knowledge, and are located beside carbon cannister and under air box, they are found on all true 04 model for sure, they are the models with black rims and center stand included.

    #4
  5. jimbes

    jimbes Adventurer

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    May 4, 2004
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    72
    Thanks for the pictures. So is this a "true" 2004 model? Could you tell me exactly what you had to do other than rip out all that stuff? I've seen mention of check valves, and another post about running lines through the airbox and such. It's killing me that I have < 100 miles on my S in 2.5 weeks, and that mileage won't be getting any higher for a while, but when I CAN ride, I'd like to have the bike ready to roll. I'll probably even have my "free" bags by then. THANKS.
    #5
  6. Katoum

    Katoum Adventurer

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    You may not want to do this if you are running stock pipes, as no one know the effect on the Coleman Catalizers. If you have aftermarket mufflers, please search for Flannys post on what to remove. Basically you vent the tanks, remove the carbon canister, and remove all line and hose that connect to the intake manifolds. You remove the SAS valve from behind the air box and remove the hoses and cover plates from the heads, then you place my blanking plates over the holes leaving the stock reed valve and gasket in place. You will need a K&N or similar inline air vent filter for crankcase, which will filter the atmospheric air to the carb vent tubes. Then you set the carb needles one notch richer, and turn the fuel screws to 21/4 out as manual states, and enjoy. If I missed anything I;m sorry, but it will be very clear once your in there. Allow 4-6 hrs so you will not have to rush, its not hard but you do not want to have to do it twice :rofl

    QUOTE=jimbes]Thanks for the pictures. So is this a "true" 2004 model? Could you tell me exactly what you had to do other than rip out all that stuff? I've seen mention of check valves, and another post about running lines through the airbox and such. It's killing me that I have < 100 miles on my S in 2.5 weeks, and that mileage won't be getting any higher for a while, but when I CAN ride, I'd like to have the bike ready to roll. I'll probably even have my "free" bags by then. THANKS.[/QUOTE]
    #6
  7. Shuffler

    Shuffler Hommes Grande

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    Katoum, do you have a part no. or picture of the filter you used to vent the crankcase breather? Is this essential right away, or can it be added later? I'm assuming it's a 2-way vent, as opposed to 1-way, right? I'm also assuming I can install this after everthing's back together, without having to remove panels, tanks, etc.?
    #7
  8. Katoum

    Katoum Adventurer

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    I do not have picture of part I ordered from KTM as dealer ordered it for me. It is off a 640 Adventurer and is a inline filter for the crankcase breather I think. Temporarily I used this air filter for PCV valve that I got from NAPA, just put hose inside and taped for extra security and zapped to tangs on back or air box. Note in picture how I capped off where SAS attached to air box, all these nipples are available at NAPA of the HELP tree.

    Attached Files:

    #8
  9. Greg Minor

    Greg Minor The Trespasser

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    What is the velcro around your wrist for?
    #9
  10. Shuffler

    Shuffler Hommes Grande

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    is that a hot plug in your storage box coming straight off the battery?
    #10
  11. Shuffler

    Shuffler Hommes Grande

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    Spent a couple hours this afternoon removing the canister system. Also awaiting my blanking plates from Katoum so I can do the SAS removal. I have some questions:

    The de-canisterization:

    Regarding the carb vent tubes in the airbox: I ran each to a Y connector and out the rear right side of the airbox where there's a blank rubber hole (cut away a small bit & ran the tubing through it). Can the carbs simply vent to atmosphere as is, or should I plug in a filter? I don't see the need for a filter if I just run the tube into the toolbox (?), but it couldn't hurt either, I guess.

    Regarding the crankcase breather hose to the top of the airbox: Is it possible to just plug that opening and then clamp some kind of filter directly onto the end of the hose? I assume this is the hose where folks have said oil runs into the airbox when the bike gets tipped over (??). Or, does the crankcase rely on the airbox vaccuum to vent properly?

    Regarding the leftover holes on the bottom of the airbox where the carb vent valve was mounted, what did you use to plug those?? I'm thinking some of those little round rubber grommets...

    Anybody covered the snorkel to prevent grit from getting in? Thought I read about somebody using panty hose or something...

    Anybody installed the Sommer airbox mod? Mine hasn't arrived yet. Does this offer enough protection against dirt/grit getting into the airbox?

    The SAS system:

    Looks like I need to move the radiator and oil reservoir to gain access to the forward cylinder head?

    How do I get those clamps off the SAS hoses? They don't look like they were meant to come off.

    What's up with the vent tubes on the inner side of each tank? Are those necessary, since I've got one-way vents installed at the top end?

    I can see how working on the carbs could be a bitch. I have no experience with that and will just have the dealer tweak the carbs once I get all this done.

    Sorry about the lengthy post. I just want to be sure I get this right the first time, 'cuz taking all the stuff off the bike to gain access is a pain in the ass.
    #11
  12. Renegade6

    Renegade6 Been here awhile

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    Can answer some of them.

    #12
  13. Shuffler

    Shuffler Hommes Grande

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    thanks - that makes sense; they're overflow tubes in case the tanks get filled to high.

    I'll probably put a Uni filter on the carb vent hose eventually, but for now sounds like it's fine to zip tie it to some point behind the airbox.

    I'll have to check Radio Shack to see about some rubber grommets for those airbox holes.
    #13
  14. k7

    k7 Ancien cyclist

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    A decent hardware store should some plugs too. Our local Ace has a much better selection of stuff like this than Homeydiscount.
    #14
  15. oldkrank

    oldkrank Not to be confused

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    I got my bike back from the dealer and discovered that bike ran badly between 4K and 6K and generally farted and sputtered through out the rev range. Not good.

    In a wild hope :1drink I installed the aluminum mufflers that I had ordered with the bike that had recently arrived. As expected the new muffler system made no improvement :cry .

    I followed your instructions and removed the SAS and canister plumbing. During this procedure I discovered that the dealer had half disinstalled the systems :huh , with less than satisfactory results.

    As with others I capped off the manifold intakes with autostore nipples designed for that purpose.

    I can report that the sascanisterectomy was a complete success :nod . In the test ride I grabbed a handful of throttle and discovered that the bike would now pop an impressive wheely. The bike accelerates smoothly throughout the rev range and no longer backfires during decelleration.

    One issue that was not clear to me:dunno . Each gas tank has two vents. Should both of these be vented to areas where fuel will not cause any unwanted excitement:hair ?

    Thanks :thumb for all your help.
    #15
  16. Katoum

    Katoum Adventurer

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    :poser Greg I should use lower resolution pictures, the velcro is my Timex watch band. So I will answer the next question in advance. That is tape around the filter housing to prevent the filter from falling out. I received my LC4 filter and the part number for those interested is 58430089000. It is nothing more than a small piece diaper tape formed into a cylindrical shape to fit in a breather pipe. I think I will order a K&N breather vent if I can find a part number for it, or hell I may just leave it the way it is, seems to work fine.

    #16
  17. Katoum

    Katoum Adventurer

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    British Columbia, Canada
    I think that it is unnessary to join the line is a t formation, that just increases the chance of kinking line. Use a seperate breather on each tank and a 3" piece of line attached to it, and it tucks into side panel fine. When you remove the valve under the air box remove the bracket from it and re-attach back to airbox, this plugs the holes, now the one hole left has the line with the carb vent filter attached to it. It is a little smaller than the hole, so place a few wraps of electrical tape around it to increase the diameter, remember it does not have to be airtight, as you have probably done the Somner mod to the side. But it will keep out mud etc.
    Cheers,
    Katoum

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