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Old 03-26-2015, 10:20 AM   #1
Earthscape OP
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950 ADV Rottweiler

So far I have had no luck finding any info on this, and a request to Rottweiler is unanswered. If this is covered somewhere already, please point me in the right direction.

All installation instructions and videos I have seen so far for the 950/990 Rottweiler air filter show a crankcase breather check valve that gets installed into the filter base plate. My 2004 950 ADV does not have a check valve in the breather line. Is the only option for 950s with no check valve the more expensive setup of ordering the kit without the breather hole and getting the additional extra breather line filter? I'd prefer the clean install of the breather going into the base plate, but if this can't work without the check valve for any model, I need to know this before ordering.
I also can't seem to find the check valve listed on any parts diagrams, in case it was cheap enough to buy just to be able to install the breather into the base plate.

Any info would be appreciated.
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Old 03-26-2015, 10:41 AM   #2
mousitsas
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I am using the SW7 setup and the baseplate has no crankcase breather hole.
The breather tube (without filter but with a check valve) has been redirected to the drive chain and -very effectively- serves the purposes of an automatic chain oiler.
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Old 03-26-2015, 11:08 AM   #3
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Has it been confirmed that the breather tube routed to the chain actually works effectively as a automatic chain oiler? Or is this just a theory?
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Old 03-26-2015, 11:13 AM   #4
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Quote:
Originally Posted by luckyducks View Post
Has it been confirmed that the breather tube routed to the chain actually works effectively as a automatic chain oiler? Or is this just a theory?
It is not a theory, my chain has always got a nice shinny film of oil on it. Do not do so without a check valve though.

edit
On my bike the breather tube has an almost horizontal routing to the drive chain and I do not cross rivers.

mousitsas screwed with this post 03-26-2015 at 12:14 PM
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Old 03-26-2015, 11:13 AM   #5
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Quote:
Originally Posted by Earthscape View Post
So far I have had no luck finding any info on this, and a request to Rottweiler is unanswered. If this is covered somewhere already, please point me in the right direction.
Any info would be appreciated.

Ask Chris about his set-up: http://advrider.com/forums/showthread.php?t=870579
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Old 03-26-2015, 11:18 AM   #6
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The check valve was started in 2005 so it wasn't on the 04 unless a dealer or owner added it. My 04 doesn't have it either and I can tell no difference between my 04 and my other LC8s that have it.

It's listed on the Ignition System parts diagrams.

40 60030090000 % BACK-PRESSURE VALVE CPL. $27.20


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Old 03-26-2015, 12:16 PM   #7
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There is no difference to be felt with or without a valve. It is nice to have one though to ensure that nothing can be ingested in the crankcase.
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Old 03-28-2015, 06:50 PM   #8
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Thanks guys for the responses, that led me to exactly what I needed to know.
Now I have some decisions to make...
I guess this is as good a place as any to ask for those listening; has anyone seen an increase in MPG with one of these open air filters? I wouldn't mind some additional range when on multi-day trips.
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Old 03-28-2015, 09:53 PM   #9
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What will yield better mpg is not the filter setup itself, but a proper tuning of the carbs for your filter and exhaust setup.
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Old Yesterday, 09:43 AM   #10
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Quote:
Originally Posted by mousitsas View Post
What will yield better mpg is not the filter setup itself, but a proper tuning of the carbs for your filter and exhaust setup.
I'm no stranger in that department.
Factory spec on my KLX250 I was getting 54 MPG; rather pathetic for a 250. Bunch of tuning later, including a 350 big bore, and now I'm getting 72 MPG. But not every bike responds like that.

In the thread for the SW7 open filter I saw very few mentions of MPG.
I've been running FMFs and the H2W jetting for many years, and the bike runs very well, but you know what it's like getting to the carbs or further in with that aribox on there, and the 950/990 seems to fall a little short on the MPG scale, even for its size and power output.

I realize that most who do this kind of mod don't care too much about efficiency, and hence don't dwell on what they get for MPG after installing it.
If an open filter bought me no power increase but a good MPG increase along with the much improved access, I'd be ok with that. Of course power gain and MPG gain would be better. Getting rid of the airbox and improving the access is a win in itself, so it would be nice to hear more of what people are seeing for before/after MPG figures regardless of what their goal for installation was.
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1999 KTM 640 ADV : : : : : : : 1993 Kawasaki KLX650
2007 Kawasaki KLX350S : : : : 1996 Yamaha XT350
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