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Getting rid of the roll over valve

Discussion in 'SideWinder Trail Talk' started by KnappAttack, Jan 3, 2018.

  1. KnappAttack

    KnappAttack VIP Member VIP Member

    Messages:
    2,000
    Location:
    Welch MN
    Country:
    USA
    Snowmobile:
    2017 Sidewinder LTX-LE
    This is what I’ve done to get rid of the problematic valve. Just a hardware store 5/8" ID hose wrapped with foil heat tape, looped it up and over down to under the running board. Let bottom hang and inch or two below the board. You can see how much blowby you have also.

    I plugged the line where the stock hose went into the turbo intake with a rubber 3/8" ID cap stretched over the intake turbo tube nipple and clamped.

    Now the intake is not getting that blow-by exhaust and no worry of the supposed factory "roll over" valve sticking shut and blowing out the oil tank seal again.

    It worked fine on my turbo 1200 Doos for years this exact same way.

    I was going to install a 1200 roll over valve but haven’t yet as the space to do so is pretty limited. It’s been over 20 years since I’ve rolled any machine and am not to worried about it not having a valve, for now anyway.

    Not telling anyone to get rid of it, but I’m not going to have my oil tank seal blown out on a trip. I’ve already sealed it once as it was leaking.

    image1.jpeg


    image2.jpeg


    This is a real roll over valve from a 1200 Rotax I had planed to use, but space is tight and I may or may not put it in down the road. I'm not to worried about rolling over anyway. The old Suzuki 1100 turbo never had a roll over valve either...

    image3.jpeg
     
    Last edited: Jan 3, 2018
    31cccat, 1100saber and Hammer70 like this.
  2.  
  3. RAMSOMAIR

    RAMSOMAIR Expert

    Messages:
    228
    Location:
    Ontario, Canada
    Do go on!
     
  4. Soldier'spapa

    Soldier'spapa Lifetime Member Lifetime VIP Member VIP Member

    Messages:
    724
    Location:
    Naperville, IL
    Country:
    USA
    Snowmobile:
    2018 Sidewinder Ltx LE 50th Anniversary
    Nice! What size tubing? Looks like about 3/4". Did you simply plug the tube going from the RO valve to the intake tract?
     
  5. RAMSOMAIR

    RAMSOMAIR Expert

    Messages:
    228
    Location:
    Ontario, Canada
    Oh, pics just showed up now lol!
     
  6. KnappAttack

    KnappAttack VIP Member VIP Member

    Messages:
    2,000
    Location:
    Welch MN
    Country:
    USA
    Snowmobile:
    2017 Sidewinder LTX-LE

    5/8" ID tubing.

    Yes, Plugged the factory turbo pipe nipple with a 3/8" rubber cap I picked up from the auto store and clamped.
     
  7. 1100saber

    1100saber Expert

    Messages:
    320
    Location:
    northern ontario
    Country:
    Canada
    Snowmobile:
    2017 Sidewinder LTX-SE
    WEBSITE:
    AlliedPerformanceShoppe@outlook.com
    FACEBOOK:
    AlliedPerformanceShoppe
    On my list now of things to do. Thanks!
     
  8. ROCKERDAN

    ROCKERDAN OCD Sledhead VIP Member

    Messages:
    5,481
    Location:
    Huntsville Ontario & Niagara NY
    Country:
    Other
    Snowmobile:
    '18 RTX 50th "Winder"
    Mike, nice work.....

    I just want to wrap my head around this. Let me know if Im understanding this all correctly.

    So sled rolls, and the OIL in oil tank wants to come up that hose, and we have the rollover valve(plunger/spring) which stops the oil from going further.

    But if that rollover was not there, the oil would go into the turbo intake track correct?

    Where would oil spill out?

    Or would it get to the hot turbo, and start on fire instantly?

    I know I keep asking same questions, and I really need to just look at my sled under hood and follow the tubes.

    Does oil leak out of valve cover anywhere too?


    So with your loop/hose setup....NO pressure will build in that oil tank, and any pressure would have to push oil vapors up and over your loop, and then out below your footwell.....do you think that will be alot of oil loss over time though?

    Will moisture get into your oil you think?


    Dan
     
    Hammer70 likes this.
  9. fourload

    fourload VIP Member VIP Member

    Messages:
    776
    Location:
    UPSTATE,NY
    Great write up. Thanks Mike.
     
  10. XP123

    XP123 TY 4 Stroke Master

    Messages:
    1,118
    Location:
    Chautauqua NY
    Country:
    USA
    Snowmobile:
    Sidewinder XTX LE 137
    I see you took it right from the top of the oil tank. Could you take a pic where you plugged the other side? Thanks Mike.
     
  11. Shagnos

    Shagnos TY 4 Stroke Junkie

    Messages:
    607
    Location:
    Slowville mi
    Country:
    USA
    Snowmobile:
    Sidewinder
    Why even remove the valve? Just cap off the nipple that the tank hose went to and route the new tank hose like Mike did.
     
  12. ROCKERDAN

    ROCKERDAN OCD Sledhead VIP Member

    Messages:
    5,481
    Location:
    Huntsville Ontario & Niagara NY
    Country:
    Other
    Snowmobile:
    '18 RTX 50th "Winder"
    What would happen if we just cut 2 coils off the little spring against the plunger in rollover valve.

    Why doesnt someone just make a proper damn gasket seal for this darn tank....why is it even a 2 piece tank anyway....grrrr

    :whine::whine::whine::whine::whine:

    lol
     
  13. SaskAttack

    SaskAttack Pro

    Messages:
    183
    Location:
    Corning,SK.
    Country:
    Canada
    Snowmobile:
    17 Sidewinder XTX-SE
    LOCATION:
    Corning, SK. Canada
    Is it the valve itself or hose that actually freezes and causes the problem?
     
  14. theewarrior

    theewarrior Expert

    Messages:
    231
    Location:
    Canada, Cape Breton
    So will this fix the oil problem in the intercooler and air filter?
     
  15. KnappAttack

    KnappAttack VIP Member VIP Member

    Messages:
    2,000
    Location:
    Welch MN
    Country:
    USA
    Snowmobile:
    2017 Sidewinder LTX-LE
    Mike, nice work.....

    I just want to wrap my head around this. Let me know if Im understanding this all correctly.

    So sled rolls, and the OIL in oil tank wants to come up that hose, and we have the rollover valve(plunger/spring) which stops the oil from going further.

    Correct.

    But if that rollover was not there, the oil would go into the turbo intake track correct?

    Correct.

    Where would oil spill out?

    Into the intake tube just prior to the turbo on the stock setup.

    In my setup in the picture, out the bottom of the hose under the footwell.
    However, if the sled is completely upside down, its not going to leak out as the line outlet would be higher than the tank itself.


    Or would it get to the hot turbo, and start on fire instantly?

    Maybe on the stock setup if it got to the turbo and ignited, but that would be a longshot. Anything is possible however.

    I know I keep asking same questions, and I really need to just look at my sled under hood and follow the tubes.

    Does oil leak out of valve cover anywhere too?

    There is a line from the valve cover going to the airbox, or in my case the cold air intake. I'm not certain, but I think it also has a popoff or pvc valve on it too. I can't see where it has ever vented any oil on mine, but when I took my stock airbox off this fall, I could see the pool of oil in the intake tube from the line coming from the stock roll over valve. That's another reason I wanted to do away with having it run back into the intake. I don't want oil in the intake.


    So with your loop/hose setup....NO pressure will build in that oil tank, and any pressure would have to push oil vapors up and over your loop, and then out below your footwell.....

    Correct, there will be NO air pressure whatsoever in the oil tank.

    do you think that will be alot of oil loss over time though?

    No more oil going out there than stock anyways. Same or even less perhaps than stock.


    Will moisture get into your oil you think?

    No. there will always be positive pressure when running from the blow-by building in the oil tank. You will always see vapor coming from the hose outward, never going in, unless you sink it perhaps. In which case you'd have the same problems anyway.


    Dan
     
    Turbo 998 likes this.
  16. KnappAttack

    KnappAttack VIP Member VIP Member

    Messages:
    2,000
    Location:
    Welch MN
    Country:
    USA
    Snowmobile:
    2017 Sidewinder LTX-LE
    The stock valve either sticks shut or freezes shut.

    Take the valve off and blow thru it. Even when it works it takes a fair amount of pressure to open it too. Now when it sticks shut, the pressure build up is large and blows out the piz poor seal in the tank. that should have actually had a real o-ring used in it, but its a Cat, not a Yamaha, so Cat just does things differently (poorly) of course.
     

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