Nytro oil drain issues

[modsledr]

I ran a 1.5' length of 5/8" id hose from the tank UP under the riser. I fab'd a "U" out of copper plumbing, and then ran a 2.5' length down to under the chaincase where the belly pan has the "cup" for the mount bolt. I "threaded" a plastice 5/8" X 1/2" MIP plumbing fitting in a hole I made with a dremel.

Now, if upside down, any oil that makes it up to the "U" will either run back to the tank, or down and out.

 

[SLY]

The problem seems to be that if it's laying on it's right side with the throttle stuck in the snow, boost pressure will blow the oil out through the vent. Mine blew out through my 2.5ft vent hose last season and ran down the running board. Think i'm going to run the hose down and out through the bottom of the RH side panel this time, carry a spare bottle and wear my tether whenever I ride

 

[MotoPsycho]

I've got an idea about this, we use a catch can on our quads that should work to remedy our problem. Its an air oil seperator from the yfz450 fourwheeler. I have a couple of them kicking around I'll have to see how I can mount it and where we can run the oil back into the res.

Does it look like this?

 

[NM]

We have totally fixed this issue on 5 Nytros with Alpine kits.

You use the grey rubber hose that comes off the tank and after it 90's towards the front of the sled then cut it.
You then build a tube about 3/4 inch in diameter and about 2" long and drill and tap it for 1/4 pipe thread and insert brass nipple...this is where you run a 1/4 line from the vent on top the motor. This tube is inserted in the grey line.
You then open the stock airbox and pull out the "S" shaped hose and attach it to the other end of the tube and let it point downward between the oil tank and the shock tower. Once it makes the turn downward then cut the black hose about 3" from the bend downward.
Ok this is important. Go to your favorite liquor store and buy a plastic mickey of Rum/Rye/Vodka and drink it. You will now be a little bit pissed unless you shared it with your buddy. Grab a drill and a small drill bit a bit bigger than a 1/16 and drill about 8 holes around the neck of the mickey bottle and slide the black hose right in to the bottle. The bottle will hang there and acts as a vent, and a catch can. No more mess in the sled, and you can dump the bottle in a environmentally safe area when you feel the need. We dump them every morning before the next days ride, and it is mostly water anyway.

Your Welcome.

NM

 

[rotax]

I ran a 1.5' length of 5/8" id hose from the tank UP under the riser. I fab'd a "U" out of copper plumbing, and then ran a 2.5' length down to under the chaincase where the belly pan has the "cup" for the mount bolt. I "threaded" a plastice 5/8" X 1/2" MIP plumbing fitting in a hole I made with a dremel.

Now, if upside down, any oil that makes it up to the "U" will either run back to the tank, or down and out.

I'm going with this idea for now. Will see how it works.
Thanks for the ideas.

 

[Calvin42]

I brought this up on Totalyyamaha a while back and a guy over there actually designed a electrial shut off valve that closes when the sled is shut off, thus allowing no oil to get into the airbox. I believe he wired it to the kill switch but some guys suggested wiring it through a tether so I think he was working on that. Hopefully he patents it and sells it to Yamaha or a aftermarket company.

 

[rotax]

I brought this up on Totalyyamaha a while back and a guy over there actually designed a electrial shut off valve that closes when the sled is shut off, thus allowing no oil to get into the airbox. I believe he wired it to the kill switch but some guys suggested wiring it through a tether so I think he was working on that. Hopefully he patents it and sells it to Yamaha or a aftermarket company.

yep, saw that post...lil overkill for what could otherwise be a simple/easy/cheap fix though.

hmm I just was sittin here thinking...and pondering running a similar "U" but dumping it forward and into the bottom of the front belly pan, under the tool/belt bag...

1. to keep the oil further away from the turbo (mid mount)
2. i think the oil will have to travel further, and go 'up' further when its on its side

i'll be getting some materials, hose and copper tubing tonight. and do some more pondering and eyeballing and see how things come together. i'll get pics of w/e i do.

 

[rotax]

hmm a little more thought on this. lol

but this is a good one i think!

Ok, so you do the "go up and make a U shape at a point higher than the tank", and at the top of the U, you put a T fitting. the straight through end will go down and dump near your foot well. The other fitting will dump back INTO the oil tank.

This way a LOT of the oil should dump back into the tank, and the breather will still breath.


Hows this sound?

Aside from having to come up with a way to dump the hose back into the tank, it sounds like a pretty slick/simple/easy setup? That should stop maybe 85% of the oil loss?
Or is this where you simply would install the 'collector tank', so this aux tank fills w/ oil and you dump it back in at the end of the day, or if you need it (due to oil light coming on).

OHHH now i like that idea... how bout using one of those small 8 oz pop bottles? I bet the opening is close enough to get something rigged up to fit over a hose? or even screw on/off?
Ok, so maybe i need more time to figure out what kinda 'catch can' system to use...

Granted, having it dump straight into the tank is the best option..I just don't think it can be done as easily...


Ok. Heres the bottle I want.

Install a 5/8" OD screw-on fitting into the bottles cap.
Attach a couple inches of 5/8" ID hose from T-fitting to bottle fitting.
Screw bottle onto the cap.

Now we have a screw on/off bottle that we can easily empty back into the oil tank. And can easily see if, or how much oil would have been lost!

I'll be building this tonight..


So, how do I mount this bottle? I could set it up to almost be an catch and release setup if I'm visuallizng this correctly.
If the bottle is attached 'upside down' and before the top most point of the arch (but closer to the can than to the 'dump side'), it should in theory, fill with oil when its on its side or upside down? And when its put back on its feet, the bottle will empty back into the hose, and if placed right, should empty back into the tank and not out the 'breather end' (or into your belly pan).

Hmm, ok time to bring ideas to reality..and see what I can do. lol

Hopefully I'm headin the right way. Let me know if you see flaw in this logic!

 

[T T T]

Thats the one I was talking about Psycho.

 

[MotoPsycho]

Thats the one I was talking about Psycho.

Cool. Thanks man... Now, off to the drawing board

 

[MotoPsycho]

Alright, so here is the idea.

Thanks to T T T for the part idea!

This should lessen the amount of fluid actually lost from the oil tank to the airbox, allow the tank to vent to the airbox as usual, and allow lost fluid to drain back to the oil tank.

Parts needed include Yamaha P/N -5TG-15370-00-00 - BREATHER ASSY
A normal ol' PCV valve for a 350 Chevy engine
Whatever hoses and clamps you may need

 

[T T T]

That should work fine, on the quads we use them on the hose from the res would go into the middle hole, then drain the oil back out of the bottom hole back to the res and the top hole would run back to the air box. I don't know if it would work the same in this aplication though because when it fills up it's still going to puke it into the box. Let us know how it works for you.

 

[MotoPsycho]

My thinking was; if the sled is on it's side, or upside-down, the top of the breather tank would be the lowest point. Therefore, the first place the oil would run to. The center will be higher, thus not allowing fluid to the airbox as readily...

 

[rotax]

Turned out OK.
Bit tight with the plastics on, the hose that runs up to the bottle gets a lil tight, but shouldn't pinch it off.
Will see what real world testing shows..

Turned out to be ~$15. 4 ft of hose was about 1 foot too much, so you could cut a few bucks off that cost.

 

[modsledr]

Rotax, I like the concept...follow up with the results.

 

[redbull660]

this is what I am going to try, here is the item number on ebay, 290275624936 I dont know how to post a link so use that number in the search area on ebay. Its a 12 volt electric solenoid for $13.00. It should work, all a person needs to do is hook it up to a tether or the kill switch. When the power is cut off the valve will automatically close and no oil will spill out when upside down. Have a look it just may work, let me know what ya think. Maybe someone with better computer skills can post a link to it. thanks

 

[snowy1]

I did basically the same as rotax did, I made a catch can out of 2" aluminum tube welded ends and welded nipples for the hoses, I ran the vent hose from the valve cover into it as well. I put some baffle material in the can to help restrict oil flow, the can is above the reservor, and the vent line runs down to the belly pan, so if its upside down it may fill the can but as soon as you up right the sled it runs back into the reservor. I used it on my trx first and then put it on my nytro.

 

[robertyoke]

this is what I am going to try, here is the item number on ebay, 290275624936 I dont know how to post a link so use that number in the search area on ebay. Its a 12 volt electric solenoid for $13.00. It should work, all a person needs to do is hook it up to a tether or the kill switch. When the power is cut off the valve will automatically close and no oil will spill out when upside down. Have a look it just may work, let me know what ya think. Maybe someone with better computer skills can post a link to it. thanks

dont even bother with the solenoid. just get a normally closed teather and your good to go.

 

[redbull660]

this is what I am going to try, here is the item number on ebay, 290275624936 I dont know how to post a link so use that number in the search area on ebay. Its a 12 volt electric solenoid for $13.00. It should work, all a person needs to do is hook it up to a tether or the kill switch. When the power is cut off the valve will automatically close and no oil will spill out when upside down. Have a look it just may work, let me know what ya think. Maybe someone with better computer skills can post a link to it. thanks

Here is the part I ordered off of ebay, this should work slick as hell, I will be installing it tomorow. It is a normally closed valve, I tried it and no air or liquid will flow threw it untill 12 volt power is supplied to it. I am going to hook it up to a 12 volt relay, when the engine is running it will open and let the crank case pressure do its thing, when you turn your sled on its side just reach down and shut off the key or hit the kill switch or better yet have it hooked to a tether. this will shut off the power supply to the valve and it wont let the oil run out. here is a picture, it weighs probably 3 ounces.

 

[Butta]

Here is the part I ordered off of ebay, this should work slick as hell, I will be installing it tomorow. It is a normally closed valve, I tried it and no air or liquid will flow threw it untill 12 volt power is supplied to it. I am going to hook it up to a 12 volt relay, when the engine is running it will open and let the crank case pressure do its thing, when you turn your sled on its side just reach down and shut off the key or hit the kill switch or better yet have it hooked to a tether. this will shut off the power supply to the valve and it wont let the oil run out. here is a picture, it weighs probably 3 ounces.

Better put a fail safe in there to ensure the motor won't run unless that valve is open. Otherwise, you'll cause yourself more problems than losing oil.