one way vents for deep water?

[chris200x]

I'm not quite sure what forum this should be posted in but a while back some of us were talking about using one way vents (or whatever they are called) on our rides so we could ride in deep water without worrying about getting water in the crankcase and differentials. Someone had mentioned about using some sort of vent cap on the ends of the breather tubes to prevent water from getting in there. I was just wondering since these are the cheapest I've seen so far. if something like this will work? do these let stuff out but not in?

http://cgi.ebay.com/ebaymotors/GAS-V...85499739QQrdZ1

Or if someone could point me in the right direction as to what and where exactly to get these things for the ends of my breather tubes.

[chris200x]

Ok well since no one seems to know I came across this for anyone intrested.

http://www.kevinscycleracing.com/

Ok the direct link isn't working but the vent kits are under the carb and intake section.

[Tri-ZNate]

Cant hurt to try 'em. Didnt realize they made one way valves for underwater stuff. Always thought of snorkel kits

[chris200x]

Hmm, this only covers the carb. I wonder if they would fit the crankcase breather tubes and differential vent?

Either way I think I'm going to order some stuff off that site.

[TimSr]

The problem with this application is that your crank needs to vent in both directions for changes in case temperature. For this reason a check valve (one way valve) will not work. Normally, if your vent tube is pointed downward as it should be, and everything is sealed, water will not go back up the tube even when under water, but if you are having a problem, you would be just as well off to plug the line until you get through your water crossing, and then unplug it to continue riding. Gas tank vents are to allow air IN, as gasoline exits the tank.

[TravEX]

Chris, I've got a system set up on mine that I will take pics of and post in a few days. I have my carb and crankcase set up where they can vent or drain if needed, but no water can get in. I gotta put headset bearings in, and I'll have it apart and get some good pics to post.

Travis

[chris200x]

The problem with this application is that your crank needs to vent in both directions for changes in case temperature. For this reason a check valve (one way valve) will not work. Normally, if your vent tube is pointed downward as it should be, and everything is sealed, water will not go back up the tube even when under water, but if you are having a problem, you would be just as well off to plug the line until you get through your water crossing, and then unplug it to continue riding. Gas tank vents are to allow air IN, as gasoline exits the tank.

Thanks Tim. That's some sound advise.

Travis, I look forward to seeing those pics and any tips or suggestions anyone else may have.

[brapp]

i have run the vents from the crankcase into the airbox but also installed a t in the lines on my sx's to help with the water and muck and they make small filters for them also so i have one comign out just under my headlight also.

[TravEX]

Ok, here goes. The trike is DIRTY, I know, but you'll get picture.

I used 3/16" hose, and a 5 way vacuum "T" connector, the one in the pic is a 4 way (obviously, hehe).


I placed the 5 way under the carb, and ran the 2 float overflow tubes to it and the float drain hose to it. I ran 1 hose down and it has a 1 way valve on it to let stuff out but not in. I robbed that valve off of my dad's 300 Fourtrax. I ran the other tube up to the handlebars.





On the top tube I put a fuel filter. The reason, I guess is so no dirt/dust can work it's way down.
So, if gas needs drained, it goes out the valve at the bottom. If the carb needs vented, then the air is there from up above. I found out the hard way that the float overflows have to be vented, because I ran them down the frame and went creek riding. When the tips of the hoses touched the water, the trike died every time. It would not run at all, unless the choke was on, and then only for a few seconds. I figured it out, pointed em up and finished the ride. The cold weather starting is not an issue at all. Single digit weather, full choke, bump the starter.

I am re-doing the crankcase breather. It uses 9/16" hose and the "T". I run a rubber squeeze valve (I guess that's what it's called) on the bottom tube. I'm gonna run the other up to the gooseneck too.

1 more thing on the carb. The 'drain' spot on the right front of the carb that points straight down, I plugged it off to keep stuff from getting in there.

Here's a pic of the deepest water I've been in with this set-up. After I get the crankcase breather stuff done, I plan to go deeper!!!LOL






Later,

Travis

[TravEX]

I bought the stuff to do my crankcase breather today. 1/2" heater hose will work good. I got 6ft of it at O'Really's for $2.99. I'm gonna tuck the heater hose and carb vent hose in the frame ducts up by the gooseneck.

[chris200x]

For taking the time to do a detailed write up Travis. this setup seems easy enough even for the mechanically challenged folks like myself. That website I posted seems to have everything you mentioned but I'll check at my local parts place first.

I like the phrase in the description of that kit where it says "turn your motorsickle into a virtual submarine!!!" I can hardly wait to try this out.

EXTREME WEATHER CARBURETOR VENT KITS Helps keep dirt out of your carburetor, while allowing proper venting and drainage. Will turn your motorcycle into a virtual submarine while also helping to prevent bogging while riding over rough terrain or whoops. By running the vent hoses as the diagram shows, you are allowing your bike to properly vent even if the lower hoses are submerged in water or clogged from gas due to whoops. Special Stainless Steel filters help keep out the dust in dry conditions, while the micro One-Way valves help keep water from traveling up the hoses in the wettest terrain. Kit comes complete with hoses, One-Way valves and Stainless Steel dust filters

[TravEX]

Yeah, on that site, all the filters/1 way vent things look great. You could use a "Y" adapter to save ya some $ for the vent hoses and drain hoses.

Are you gonna order some?

[chris200x]

Yup. I'll be giving this a shot. I need something to keep up with the big 4x4's.

[TravEX]

LOL, Cool pics!!!