Now that I have pod filter, I'm thinking of using an extra inline fuel filter to filter the air going into the crank case. Is there any issue with doing this that I should be aware of?
Thanks,
Adam
buy a breather filter, thats what they are made for.
Hmmm, that seems like a really good idea.
I have had troubles getting a proper breather filter that will fit, but a $2 fuel filter would most likely do the job perfectly.
Probably have to change it every 10,000km's as it would clog over time with oil blow bye and debris, but for $2, big whoop!
If you're on a ramen noodle budget, you can zip-tie a Red Bull can to the frame rail and route the hose into it. Common streeetfighter mod, but you'll need $2 for a Red Bull if you don't like rooting through the trash... :laugh: Probably a longer section of hose as well.
However, you can get those breather filters at Autozone for $10, and I'd agree that's the best solution.
no need for a filter at all!!!!
pull that cover off of the valve cover
and you will see a big pile of SS steel wool...the filter...is in the engine
the hose is for positive crankcase venting...and it routes to the airbox to
burn the little bit of oil mist that might get past the filter
either route to a catch can....red bull is fine
or route a tube to rest on top of the air filter to suck any oil mist and burn it in the engine
unless you want bling factor that nobody can see..... :icon_rolleyes:
Not many autoshops here (South West Sydney) stock breather filters for such a small size hose.
I really think the fuel filter idea has some merit and I'll fit one today.
If there is a problem I'll remember to dig this thread up and report it.
Here is a picture of it mounted.
(http://img318.imageshack.us/img318/8636/fuelfilterbreatherae2.jpg)
I put a longer section of 12mm fuel hose on so the filter would clear the lunch box air filter. If you wanted you could attach another piece of hose to the end of the filter and have it exit out the side of the bike (ie where the battery breather exits)
but I didn't.
Fit the filter so the flow direction marked on it points away from the engine.
So far so good :thumb:
Another option is to cut a small hole in the lunchbox filter and add a fitting for the breather hose to attach.
Quote from: dgyver on December 15, 2006, 06:02:51 AM
Another option is to cut a small hole in the lunchbox filter and add a fitting for the breather hose to attach.
If you are emissions concious (and we all should be) that is a really good idea too :thumb:
Alrighty.
I returned from a long road trip (900km in one day!) and my bike had an oily mist from my breather hose (had an inline fuel filter on the end). The filter seemed to have become partially clogged too, so I wanted a new idea.
So I have decided to change my breather to feed a catch can.
I found a really small plastic orange juice bottle.
Drilled a hole in the lid that would fit a 10mm fuel hose.
Around the larger hole I drilled 20 smaller holes.
Inside the bottle I shoved a nylon orange netting bag to help condense the oil mist so it will collect in the bottle.
So the oily mist from the breather goes down the fuel hose into the bottle, the oil gathers on the netting and falls to the bottom of the bottle, the air pressure escapes out of the smaller holes drilled in the lid.
When I need to empty the bottle I can reach in between the frame, unscrew the top lid, clean out the bottles content, then screw it back on.
Easy peasy!
I am with kenny, I cant see a need for a filter. Its a vent to allow pressure to escape from the engine, not to enter. The racers use catch-cans and filters to stop oil drips getting on the track. If you put a filter in the vent line it will ultimately become clogged and restrict airflow out of the engine. This in turn will lead to an increase in crankcase pressure and the possibilty of a failed gasket or a blown oil-seal.
For those who are emission concious this may be a good option.
http://www.automotiveforums.com/vbulletin/showthread.php?t=469918
Today I replaced the nylon orange bag in my catch can (bottle) with some 60 cent stainless steel pot scourer.
(you include a mess object like this to increase the surface area so the misty oil gathers on the surface of the scourer and drips to the bottom of the bottle)
PIC's :thumb:
We need Pictures!
If you position this contraption right the oil will drain back into the valve cover.
You will still need a filter.When the engine is cranking it has a tendency to suck air in.
Ask me how I know.
how do you know :dunno_white: :laugh:
Quote from: CndnMax on August 09, 2007, 08:52:58 PM
how do you know :dunno_white: :laugh:
I destroyed a dirt bike engine that way.Small particles (dirt) got in there an scored up the cylinder walls and piston.
aww thats not good :nono:
Quote from: scottpA_GS on August 09, 2007, 07:43:55 PM
PIC's :thumb:
We need Pictures!
I was waiting for that.
If I bothered to take a photo when I had my tank off you could have easily seen it.
now I can only take a photo through the frame.
Quote from: galahs on December 15, 2006, 07:07:47 AM
Quote from: dgyver on December 15, 2006, 06:02:51 AM
Another option is to cut a small hole in the lunchbox filter and add a fitting for the breather hose to attach.
If you are emissions concious (and we all should be) that is a really good idea too :thumb:
Has anyone actually done this? Just curious since I'll be putting on a lunchbox soon.
Your engine isn't in very good shape if you are getting a lot of oil coming out of there, blow-by basically. Also leaving the tubing exposed to air isnt the best.
Quote from: slowinthestraights on September 11, 2007, 01:06:09 AM
Your engine isn't in very good shape if you are getting a lot of oil coming out of there, blow-by basically. Also leaving the tubing exposed to air isnt the best.
Did you send your breather hose back into the lunchbox on your GS?
Quote from: crispy5 on September 11, 2007, 07:22:58 AM
Quote from: slowinthestraights on September 11, 2007, 01:06:09 AM
Your engine isn't in very good shape if you are getting a lot of oil coming out of there, blow-by basically. Also leaving the tubing exposed to air isnt the best.
Did you send your breather hose back into the lunchbox on your GS?
No, that is the same as leaving it open to air, but its filtered air. Im routing it into the top vacuum line on the carb, above the fuel line.
Quote from: slowinthestraights on September 11, 2007, 10:09:06 AM
Quote from: crispy5 on September 11, 2007, 07:22:58 AM
Did you send your breather hose back into the lunchbox on your GS?
No, that is the same as leaving it open to air, but its filtered air. Im routing it into the top vacuum line on the carb, above the fuel line.
Actually, it's not quite the same, because the lunchbox/airbox is under a vacuum, so you have a kind of valveless PCV. (The intake vacuum forcibly draws crankcase fumes out.)
You're routing it where???? :o OMG, if that's what I think you're saying, that's the carburetor overflow tube!!! If your floats get stuck it will dump fuel into your crankcase... NO NO NO :o
Quote from: Chuck on September 11, 2007, 11:03:10 AM
Actually, it's not quite the same, because the lunchbox/airbox is under a vacuum, so you have a kind of valveless PCV. (The intake vacuum forcibly draws crankcase fumes out.)
You're routing it where???? :o OMG, if that's what I think you're saying, that's the carburetor overflow tube!!! If your floats get stuck it will dump fuel into your crankcase... NO NO NO :o
:icon_razz: I havent done it yet, I wasn't sure what it was so I was goign to check what it was first, of course.
OK here is my Catch Can ( actually a catch bottle) for my GS500's rocker cover breather. This prevents oily mist from being blown all over the rear of your bike if you have fitted an after-market air filter.
(http://i90.photobucket.com/albums/k248/galahs/gs500f/diy_catch_bottle_pic.jpg)
So basically I:
1. got a small juice bottle.
2. Drilled a large hole in its lid that would snuggly fit the Valve Cover breather hose.
3. Drilled 12 small holes around the large hole in the lid (vent holes)
4. Fit the lid onto the valve cover breather hose.
5. Put a hose clamp on the breather hose under the lid to prevent the bottle from slipping off the hose
6. Filled a juice bottle with stainless steel scourers ($1's worth)
7. Screwed the bottle onto the lid ensuring the hose pushed into the middle of the scourers.
(http://i90.photobucket.com/albums/k248/galahs/gs500f/diy_catch_bottle.jpg)
So now the oily blow-by gases from the valve cover flow into the bottle, condense on the scourer, drip to the bottom of the bottle, and the remaining pressure escapes out of the small vent holes in the lid.
After time the bottle will fill with an oily liquid (mixture of oil, water, fuel, acids). Just reach into the frame, unscrew the bottle from the lid and tip this oil into an old oil container and take it to your oil recycling centre.
Then just re-screw the bottle back onto the bike.
Every major service remove the entire catch bottle and clean it, the vent holes in the lid and the scourers out in kerosene.
Preventing this oily mist from being breathed into your engine helps keep its carburettor and internals cleaner, and allows the engine to run more efficiently (as it only breathes clean, fresh air).
It is also important for the engine to be able to relieve any pressure build up that occurs in the engine as freely as possible. Otherwise the pressure build up may cause a seal or gasket to blow. The inline fuel filter I previously used became 'glugged' up with oil and no longer breathed sufficiently. That's why I searched for, found and implemented this method. :thumb:
Just out of interest... what is everyone else that uses a Lunchbox or pod filters doing with their rocker cover breather?
Quote from: galahs on September 23, 2007, 05:36:24 AM
OK here is my Catch Can ( actually a catch bottle) for my GS500's rocker cover breather. This prevents oily mist from being blown all over the rear of your bike if you have fitted an after-market air filter.
Good idea, and good post! :thumb:
Yea you can do this, I have in the past used a PCV valve as well.
Cool.
Buddha.
Are there are non-ghetto looking ways to do this? I want to install those mods but I dont wanna have some ghetto bottle on my bike to catch shaZam!...
Isn't there a someproduct that does that?
Couldn't I just build a one way valve that drains the engine-juice on the ground?
yes you can
make sure you dump that oil right in front of your rear tire
Here's an idea... why not buy a 90 degree vacuum line elbow, drill a small hole in the flat side (rubber top/back) of the lunch-box filter and run the hose to it?? It'll still re-burn the oil residue and look stock... ish.
Yep that is another option that would appear to most untrained on lookers as being stock, but it will also result in your carbs being exposed to oil, making them dirtier and adding oil to your combustion (Yuck!).
The best option would be
1. to have a line into the catch bottle
2. the oil collects on the steel wool and settles in the bottom of the bottle
3. the cleaner air (fumes) is piped back to the air filter and then sucked in and burnt
A steel or aluminium container would help make it look stock. :thumb:
Quote from: galahs on February 17, 2009, 05:36:05 AM
Yep that is another option that would appear to most untrained on lookers as being stock, but it will also result in your carbs being exposed to oil, making them dirtier and adding oil to your combustion (Yuck!).
Wait isn't this what happens with the stock airbox? Where does it route to in the factory stock box?
Quote from: galahs on February 17, 2009, 05:36:05 AM
Yep that is another option that would appear to most untrained on lookers as being stock, but it will also result in your carbs being exposed to oil, making them dirtier and adding oil to your combustion (Yuck!).
ya never heard of a 2 stroke?????
A two stoke engine is designed to burn oil, 4 strokes prefer not to.
I heard you can just put a paper towel around the hose and keep it on there with a rubber band so nothing will get in, but it will allow air out.
Quote from: tripleb on March 03, 2009, 07:42:50 AM
I heard you can just put a paper towel around the hose and keep it on there with a rubber band so nothing will get in, but it will allow air out.
That's only going to work until the bike gets wet though, then the paper towel will just disintegrate... It would be extra bad if some of that paper towel made its way back down the hose...
Quote from: fred on March 03, 2009, 02:24:32 PM
Quote from: tripleb on March 03, 2009, 07:42:50 AM
I heard you can just put a paper towel around the hose and keep it on there with a rubber band so nothing will get in, but it will allow air out.
That's only going to work until the bike gets wet though, then the paper towel will just disintegrate... It would be extra bad if some of that paper towel made its way back down the hose...
It wouldnt get past the wire mesh filter inside the cam-cover where the breather hose exits.
Quote from: sledge on March 03, 2009, 03:01:56 PM
Quote from: fred on March 03, 2009, 02:24:32 PM
Quote from: tripleb on March 03, 2009, 07:42:50 AM
I heard you can just put a paper towel around the hose and keep it on there with a rubber band so nothing will get in, but it will allow air out.
That's only going to work until the bike gets wet though, then the paper towel will just disintegrate... It would be extra bad if some of that paper towel made its way back down the hose...
It wouldnt get past the wire mesh filter inside the cam-cover where the breather hose exits.
Good to know. Still doesn't seem like the greatest of ideas though...
Yeah but the filter (or paper) will eventually get saturated in oil and then drip all over the back of your engine, bike frame and REAR TYR
Quote from: galahs on March 03, 2009, 11:25:31 PM
Yeah but the filter (or paper) will eventually get saturated in oil and then drip all over the back of your engine, bike frame and REAR TYR
It would have to be a lot of oil dripping on the engine before it hit the tire... When I've had oil leaks, most of the oil burns off before ever getting to the ground. I've had a valve cover gasket leak that never made it more than a few inches down the head before burning off and a clutch cover gasket leak that only ever hit the ground when I parked the bike and it cooled off...
I went for an 800km ride with an inline fuel filter as a crank case filter, and when I arrived I noticed the entire rear frame and swing arm of my bike was covered in an oily film.