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  1. #1
    Super Member
    Join Date
    Apr 2004
    Posts
    6,652
    Location
    SF Bay Area-Ca Olympia WA Salzburg Austria
    Tractor
    Cat D3, Deere 110 TLB, Kubota BX23 and L3800 Craftsman Mower, Deere 350C Dozer

    Default Diesel Exhaust as in sucking fumes...

    I've often wondered why most tractors exhaust near the driver's seat and not under and behind like a car?

    It would seem the quality of breathable air would be better... especially when working for hours at a time.

    I've heard a few comment that the new tier standards have made a noticeable improvement...

    Helped a friend a few months ago with an old Dozer and the exhaust was more than an annoyance... could have been partially the short stack that was homemade for better clearance in the orchard.

    Anyone here re-route exhaust especially with older equipment?

  2. #2
    Veteran Member
    Join Date
    Mar 2013
    Posts
    1,218
    Location
    Linn, MO
    Tractor
    John Deere 2720

    Default Re: Diesel Exhaust as in sucking fumes...

    I was wondering the exact same thing the other day while cutting grass. Why exhaust it right under the hood, in front, where the exhaust comes right to you as you go forward. The only thing I can come up with is the limited amount of space to route it behind the tractor, plus the extra heat that would be added to that area. You don't have the air movement to keep it cool, and you don't really want the exhaust too close to the ground where it can possibly catch some dry grass or hay on fire.

  3. #3
    Super Member
    Join Date
    Apr 2004
    Posts
    6,652
    Location
    SF Bay Area-Ca Olympia WA Salzburg Austria
    Tractor
    Cat D3, Deere 110 TLB, Kubota BX23 and L3800 Craftsman Mower, Deere 350C Dozer

    Default Re: Diesel Exhaust as in sucking fumes...

    I forgot to consider fire danger... good point.

  4. #4
    Bronze Member PHIL850's Avatar
    Join Date
    Apr 2006
    Posts
    99
    Location
    MASS and Northeast kingdom of VT
    Tractor
    JD 850

    Default Re: Diesel Exhaust as in sucking fumes...

    My John Deer 850 has a factory underslung exhaust out the back. I know they came standard with a
    stack straight up, but mine is down under and out the back. I bought it used and that is the way it came. have never had an issue brush hogging / mowing with it that way. I was told by someone that it was an option for when a tractor is used for mowing in an orchard to keep clear of tree branchs.

  5. #5
    Super Star Member murphy1244's Avatar
    Join Date
    Nov 2011
    Posts
    16,785
    Location
    Ohio
    Tractor
    Kioti DK 40-Massey ferguson 135-Ventrac 4500 Diesel

    Default Re: Diesel Exhaust as in sucking fumes...

    My Massey 135 is under out the back.
    Murph ------------

  6. #6
    Gold Member
    Join Date
    Apr 2008
    Posts
    464

    Default Re: Diesel Exhaust as in sucking fumes...

    Our Ford/NH 3230 exhausts out the back under the rear axle. I suspect my wife's grandfather ordered it this way due to garage door clearance, but that's just a guess. The ROPS (and my head) just barely clear the garage door where this tractor has always been stored. If I disconnect the garage door opener, the door does not go up high enough for the ROPS to clear.

    I think there's tradeoffs both ways. Coming out the top means the exaust could be in my face, and may have clearance problems putting it in the garage. Going underneath means ground clearance issues possibly, possible issues with dry tall vegetation and hot 3ph components when you need to switch attachments after running a while (just had this a couple hours ago when I switched from the finish mower to the rotary cutter).

    Keith

  7. #7
    Platinum Member tessiers's Avatar
    Join Date
    Sep 2007
    Posts
    669
    Location
    Central Maine
    Tractor
    05' JD 790 - 49' Ford 8n - 53' Ford NAA - 70' Massey Fergusen 135 diesel - 1950 John Deere MC - 1992 Thomas T-83 skid steer

    Default Re: Diesel Exhaust as in sucking fumes...

    I have converted most of mine to vertical exhaust, under exhaust and hay don't go together. Most old models could be ordered either way. I like a tall vertical pipe over my head. My JD 790 comes out the left side of the engine compartment, I hate it, hope to convert it someday. My crawler had the exhaust up the brush riser on the roll bar and exited out the back of the roll cage. I did a little re work and the exhaust is still temp. but that worked well and was well protected from brush.
    check us out at www.tessiersfarm.com

  8. #8
    Gold Member
    Join Date
    Jan 2012
    Posts
    278
    Location
    Moores Hill, Indiana
    Tractor
    MF 150, TO-35, John Deere 5065E, Caterpiller 953 track loader

    Default

    Well, the under the tractor out the back exhaust on the TO-35 was bad for the two poor souls riding the tobacco setter all day. Dad converted it to vertical exhaust after the first tobacco season usage. Also the fire danger raking/baling hay.
    MBA = More Bad Advice

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