BMW K bikes (Bricks)

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svenok

svenok
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breather hose at the front of the engine Breath10


I've started to put the K100 RS V4 back together, at the front of the engine there appears to be two breather outlets.
One is quite large around 8-10mm and this is piped to the air box. On the same breather there is a small 3mm nipple and I have no idea where this is meant to be plumbed.

Anyone have an idea where this should be plumed?



Last edited by svenok on Thu Oct 08, 2020 7:12 am; edited 1 time in total (Reason for editing : added foto I hope :))


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K100RS 12/90 WB1052309M0200614
    

Laitch

Laitch
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This would be a good time to post a photo of this object.


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1995 K75 81,000 miles
breather hose at the front of the engine Usa-lo10
    

moriarti

moriarti
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Ks breath via the Z tube,USofA california rules required extra CLOSED breathing.On the forum is a post with a lot of info.in short if you're not under legislation study you can just blank it off scratch


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1984 k100 rs red/black VIN  0004449
    

4Back to top Go down   breather hose at the front of the engine Empty breather Thu Oct 08, 2020 7:13 am

svenok

svenok
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Foto added.


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K100RS 12/90 WB1052309M0200614
    

Ringfad

Ringfad
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breather hose at the front of the engine Ir-log10

   ;BMW; K100RS Style Black 1987 105K Km     ;BMW; K1 Black 1993 60K Km     ;BMW;     K1100LT (Swiss) now a RS
    

6Back to top Go down   breather hose at the front of the engine Empty Breather Thu Oct 08, 2020 8:03 am

svenok

svenok
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Ringfad, just so happens I have a couple of these sitting on a shelf. 
Perhaps some sort of glue to stop it popping off? Twisted Evil


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K100RS 12/90 WB1052309M0200614
    

Ringfad

Ringfad
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It is a vacuum cap so should not need any glue, make sure you use a new one as this one is awkward to get at when bike is together.


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breather hose at the front of the engine Ir-log10

   ;BMW; K100RS Style Black 1987 105K Km     ;BMW; K1 Black 1993 60K Km     ;BMW;     K1100LT (Swiss) now a RS
    

Laitch

Laitch
Life time member
Life time member
As moriarti indicated, that hose is part of a California emissions control scheme that wasn't particularly successful. Olaf has shown one method of capping the crankcase fitting. The other part of the puzzle is rerouting the hose from its port on the underside of the tank to exit behind the right foot peg plate. This service bulletin explains the situation.

An alternative is to install an accumulator cup and route the hose from it.
breather hose at the front of the engine Accumu10


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1995 K75 81,000 miles
breather hose at the front of the engine Usa-lo10
    

svenok

svenok
active member
active member
Thanks for the information. I'll check the tank for the breather and carry out the mods suggested.


__________________________________________________
K100RS 12/90 WB1052309M0200614
    

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