Hi
What do you guys run as a engine breather tube on Darmahs? Mine has the large tube off the plastic breather cap, which runs up under the tank, but nothing else.
Cheers Tomo
Engine breather
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- Mariana
- Posts: 42
- Joined: Fri May 28, 2004 2:52 am
- Location: Australia
The filter on the breather is a good idea.The engine inhales thru the breather when the pistons go up the bores and exhales when they come down.On the stock setup which everybody has removed the breather was routed inside the air filter housing.The little flap thingy at the end of the hose in the housing was intended to stop the inhale part of the cycle and reduce positive pressure in the cases which will also push out oil at high revs.A reed valve or one-way valve from an automotive air injection system works great as a substitute and can reduce the potential for oil leaks.
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- Mariana
- Posts: 42
- Joined: Fri May 28, 2004 2:52 am
- Location: Australia
engine breather
Sounds very similar to the set-up that wdietz186 is talking about. It all comes down to making negative pressure in the crankcases and inhibiting oil leaks. Rather than pay good cash maybe go with wdietz186 idea and get an old PCV valve and mount that on the breather tube. These are a very basic non-return valve or one way valve and you could perhaps mount one in the breather tube in such a way that would allow the engine crankcase gases to blow out but not suck in. You could pick up one of these valves from an automotive wrecker for nothing or very close to nothing. Certainly got me thinking, I`m going to ditch the bit of rag cable tied on the end of the breather tube and bung in an old PVC.
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- Mariana
- Posts: 42
- Joined: Fri May 28, 2004 2:52 am
- Location: Australia
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- Cucciolo - the Lil Pup
- Posts: 20
- Joined: Mon Oct 12, 2009 11:50 am
Anybody tested guzzino.com`s Baffled Aluminum Racing breather box ?
http://guzzino.stores.yahoo.net/albrbox.html
I wonder if this is even better than the K&N filter on the end of the hose...
Pricier though
Is it still necessary to put a filter/valve at the out end of the tank ?
http://guzzino.stores.yahoo.net/albrbox.html
I wonder if this is even better than the K&N filter on the end of the hose...
Pricier though
Is it still necessary to put a filter/valve at the out end of the tank ?
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- Cucciolo - the Lil Pup
- Posts: 20
- Joined: Tue Apr 18, 2006 10:19 am
- Location: Christchurch, New Zealand
Breather Filter
There is a nice little K&N filter which fits directly to the breather stack. I think it is off a turbo blow off valve. Does away with the hose completely and stops sucking dirt off the rear wheel!
Owner of two 78 Dramahs as I can't afford a 900SS or a Greenframe!