Snorkel Type Pre-Cleaner Air Filter

A while ago I was reading this site and someone sent in a picture and wrote about their air cleaner system that uses the original air canister filter that is mounted in the stock position but, uses a snorkel pipe with what looks like a pre-air cleaner at the top of the pipe that is mounted above the roofline. 

I wonder if this type of a system would make as much 'air-draw' noise as the one where a larger air filter is mounted on the screen behind the passenger's head.

I can't seem to find the post to contact the poster.  Maybe someone here can lend a hand.

Thanks to all for bearing with me.  Clay

    If I'm not mistaken, that is the way some RTV 1100 units are set up.  Canister on bottom, piped up to a dust-collector above the cab.

    I did read somewhere on the net, where a RTV owner piped his under the cab and had his canister under the hood somehow. A homemade job...... But didn't say anything about the noise thing, he was just trying to be a tight-wad and try to save some money. ( which is o.k., I repect him for that !!! )  He did state, he spent more on his way by the time he finish, than he would if he would of just purchased the ROPS high rise from Kubota ......

 Thanks again for the reply.

I had the option of that type of a raised air cleaner with the dust collector at the top when I purchased my 900 w/o the cab.  I'm sorry I didn't make that choise. 

It would be really helpful to hear from someone that has this type of an air cleaner set-up to see if there is a air draw noise issue or not before I buy another air filter.

...

  If you can find yourself living with the noise., you will find that the RTV's performance is so much better with the OEM, ROPS high rise system, your engine can breathe so much better, myself and many others has notice the difference !!!!

    The Kubota engine in the RTV's, do take in much air, that might be what you are hearing, it gobbling it all up to run better for you !!!!!!!!

     Do this test to show  how much noise reduction the sliding back glass does take away from the ROPS high rise system,  CUT yourself a piece of cardboard, or something simular,  of the WHOLE size of your back section where the glass goes. Snug it up really good and run it with your high rise on, you will see how much reduction you get. It does cut down on the noise some. Personally, I don't even know it's back there now with the back glass. Really only hear it when you start slowing down really quickly, and that's the engine brake is doing it 's job ~~~~~ Sounds like a Jacob's brake on a 18-wheeler ~~~~

          ~~~~~~~~~~~~~~~ ~~~~~~ Two Guns ~~~~~~

 Now that's a really good idea!  I'm lucky that all of my driving is on my forest grass skid roads and some areas that I had graveled so the dust level at this time of year is not much at all.  I'll try your suggestion and post the results.  Thank's again for the help.  Clay

 You may be referring to one of my original posts.

It can be found at the top of this thread along with a picture:

http://compacttractorreview.com/cs/forums/p/2424/9342.aspx#9342

There is some reflected noise down from the mushroom cap on mine, it does not bother me but could bother someone i suppose, it is a little quieter with the cap off, but not a whole lot. Most of the noise mine made initially was leakage through the two halves of the filter housing.

Thanks for responding.  Your air filter cap is simular to one of the optional stock type ones that has a pre-cleaner on top. 

Do you think that yours would have less reflected down noise if the unit was raised up higher above the roof line?  Clay

Clay Buster:

 

I wonder if this type of a system would make as much 'air-draw' noise as the one where a larger air filter is mounted on the screen behind the passenger's head.

        I do believe, there is going to be " X " amount of air noise where-ever you put the intake. The engine has to have so much air for it to run right. Don't want to resrict it any way what so ever. Also, another reason the ROPS high rise filter system makes more noise than the other placement and box, the air box is bigger, and the way it's set up make the engine draw more air, which there you go, you hearing more air getting drawn . And that's why you machine's performance is so much better, for it's getting to breathe better with the bigger box, being the smaller box restricts some of the air the machine wants to have !!!!

The only reason we don't here it where it is when they come from the factory, the engine over-rides that noise. Just like your truck or car .   I know of several 1100 owners that have the high-rise with their dust bowls up on top, and there, you hear the air going into them.  So it's really a matter of how far you get it away from you ears. For your going to hear some air being pulled into by the engine......, the closer you have it to your head !!!!!!  If you took your pick-up truck, and tubed the air intake just two feet from you head, you would hear the same noise being drawn into that engine just the same way you hear it in the Kubota RTV >>>>>>>>>>>   One is not going to be able to " quiet down " the sound, unless he get's it further away from his hearing area . You will not be able to silence or something like that, for you would be restricting the air flow into the engine ....

    You might want to think about setting your big air box under the hood, ALL the way in the area in the front, where that trap door is down in there, access down into that area....that would be as far foward as one could go .....Run your pipe under the cab and up into the airbox there, That's where my next placement would be if I didn't like where it was at now .... In that spot, you will not be getting to much dirt / dust , and you will be installing your box somewhere where it would not be getting all that crap that it would be if it was to be at the OEM placement. Don't know if you would hear any noise coming in under the dash or not ..... This is only a suggestion !!!!

                             ~~~~~~ Two Guns ~~~~~~

                              

              

     

 

I completely understand that you are going to have air-draw noise no matter where you place the air cleaner unit.  And, that the less restriction of the air flow is benificial to higher engine performance.  What I'm trying to acertain is how much less air noise I would hear if I place this same unit above the roof line or, buy yet another Kubota type that has the dust bowl at the top.  With any luck at all I'll be able to use the one I already purchased and change the mounting location (above the roof line).  I know that the further away the unit is from the ears the less noise you will hear.  Also, any physical barrier will midigate some of the noise like using a rear window. 

I guess that I'm just going to have to experiment with different mounting locations of the ROPS mount air cleaner that I have.

Just a thought... with the larger air filter unit drawing in more air do you think that the engine maybe running a little on the lean side and, that the fuel mixture should be enrichened if possible???   Clay

     claybuster,

          Fuel mixture. I thought the same thing when installing the new ROPS intake. Found out that NO adjustment needs to be done what so ever.  

           Above the roof line.  I wouldn't install the air box above the roof-line myself. Much could happen to quickly. To much of a chance of something ripping it off like a limb or something that one would drive under.  I understand that even Kubota, with their new " dust bowl " systems, they even dropped them down some, not much, but enough to try to keep on from busting the bowl .  There is some differance in height compared to the first dust bowl systems they were putting out .....

          I will attach a picture, where Mr. Biglane removed his dust bowl type air box, and install his this way. It's level with the cab, but not above..... If I'm not mistaken, He said he could hear air sucking in also in his dust bowl before he done this fabrication to one of his 1100's..... He fabricated this this way, for the bed that he had specially made for his machines .

        Where ever you put a air box, I would use the bigger air box that came with the ROPS high rise system. You already have this in your pocket, should go ahead and use it !!!

Thanks for the picture - "a picture says a thousand words" .You're right that air box placement should not be above the roof line for all the obvious reasons.  The air box location in the picture is where I was thinking of mounting mine.  

Do you know if he had to 'customize' the air box mounting hardware or, if the hardware he used is a Kubota product?  Clay

Clay Buster:

 

Do you know if he had to 'customize' the air box mounting hardware or, if the hardware he used is a Kubota product? 

            

       Think it might of been a combination of both, but next time I talk to him, I will find out. Seems like you can use the same mounting bands and some of the mounting hardware that comes with the high rise kit !!!!

                            ~~~~~~ Two Guns ~~~~~~

I'll look forward to hearing back from you on what you found out.   Thanks again for the help.  Clay

 Donaldson air filters make a Top Spin precleaner that, I think,  has a silencing effect.  I think member Nick-America has one on his 1100.

 Clay I have that setup on my 1100. It's factory kabota acess. for the 1100. You change the air inlet only. It has a sediment trap on top that comes off with a wing nut. Wash it with the garden hose and put it back on. Seems to be doing a great job of keeping the main filters clean. My granddaughter broke my digital so can't post a picture.