Diesel Exhaust Diversion

[sriddle1]

I own an '05 JD 790 Compact Tractor that resides in an attached garage. It smokes when you start-it-up (even when using the glow plug function) and that smell can creep into the house during the winter months + lingers in there for quite a while even with the stall door open.
The 790 has a short 45 degree angle 1-1/4 OD exhaust pipe above the front axle and situated just perfect to hit the rear of the 58 Front Mount Snowblower so the exhaust bounces back into the garage.

I've seen service bays use the Stainless Flex Tube/Hose to divert the exhaust outside. Looks like Walker Emissions Control (Commercial Line) makes a Galvanized Flex Tube in 6 lengths. Those familiar with a JD59 Front Mount Snowblower, they have Black Vertical Drift Blades attached to the sides of the Auger Housing. I thought I could Budgie Cord the Flex Tube to that, maybe? Either leave it permanently attached or when snow height is a concern, disconnect/remove when I get it running outside.

I have some questions not being mechanically inclined as you can tell by other postings. 1) I've read to avoid any Back Pressure, by adding a 6' extension would there be any concerns. 2) Not sure how to create a quick connect/disconnect over the JD exhaust pipe, don't want to break it off, vibration, etc. 3) Lastly, what diameter Flex Hose should I consider to ensure adequate flow, 6 lengths start at I.D. 2" to 6" but attaching & leakage would be a concern. Any thoughts appreciated. THANKS

 

[Shaneard]

As long as the I.D. of the tube your adding isn't smaller than the muffler exhaust exit you shouldn't have a problem of restriction. As far as getting it to seal, if you can slip it over and put a steel hose clamp on it if your using flexible pipe, would that work? Not sure it would "crimp" it enough to be tight. Only problem with that it will be hot when you take it off so wear gloves.

 

[TractorGuy]

I found an 1-1/4" turn down extension at NAPA I put on my 855 to redirect the exhaust. My pipe was rusted off at the end so I don't know that i didn't just aim it the way it should have been. Sorry I don't know the part number.

What about a fan to blow the exhaust out of the garage when you open the door. Kind of like this but aimed out from the wall.
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[beenthere]

Or just an exhaust fan that can be turned on to exhaust the fumes. I dislike them (fumes) too, but only have to smell 'em when bringing in a load of wood on a pallet about once a week.

 

[dickfoster]

I own an '05 JD 790 Compact Tractor that resides in an attached garage. It smokes when you start-it-up (even when using the glow plug function) and that smell can creep into the house during the winter months + lingers in there for quite a while even with the stall door open.
The 790 has a short 45 degree angle 1-1/4 OD exhaust pipe above the front axle and situated just perfect to hit the rear of the 58 Front Mount Snowblower so the exhaust bounces back into the garage.

I've seen service bays use the Stainless Flex Tube/Hose to divert the exhaust outside. Looks like Walker Emissions Control (Commercial Line) makes a Galvanized Flex Tube in 6 lengths. Those familiar with a JD59 Front Mount Snowblower, they have Black Vertical Drift Blades attached to the sides of the Auger Housing. I thought I could Budgie Cord the Flex Tube to that, maybe? Either leave it permanently attached or when snow height is a concern, disconnect/remove when I get it running outside.

I have some questions not being mechanically inclined as you can tell by other postings. 1) I've read to avoid any Back Pressure, by adding a 6' extension would there be any concerns. 2) Not sure how to create a quick connect/disconnect over the JD exhaust pipe, don't want to break it off, vibration, etc. 3) Lastly, what diameter Flex Hose should I consider to ensure adequate flow, 6 lengths start at I.D. 2" to 6" but attaching & leakage would be a concern. Any thoughts appreciated. THANKS

Too bad you're so far away. I've got a hunk of stainless flex exhaust tubing that I wound up not needing. I'd have sold it to ya cheap but shipping would be a deal killer. I paid a bloody fortune for it too.

 

[buickanddeere]

Plug in the block heater and fuel with kerosene or #1 diesel.

 

[dieselcrawler]

I dont know if this is of any help in your situation, but may be food for thought. I have built complete exhaust for my 3005 (new 790) that follows the limb riser over the roof.

http://www.tractorbynet.com/forums/customization/371617-jd-3005-exhaust-mods-replacement.html

 

[tjkubota93]

The fan sounds good. A place I worked had nice silicone type rubber exhaust hoses, much easier to deal with. Another had black rubber (hands get dirty). And both of those can be run over.

 

[sriddle1]

Thanks to All that have posted to date, just getting back to my post before purchasing stuff........ SHANEARD was wondering about any back pressure so that good to know, yup HOT !! JD855GUY, I'm still coming-up with a method to slip the 2" ID flex pipe over the OEM Pipe, either connect or hold in place with something, open the garage door, extend flex tube beyond door opening a couple of feet during start-up then quick disconnect once outside. Temporarily holding it in place on top of the snowblower using a Budgie to the Drift Blade seems viable. BUICKANDDEERE, Good thought a better fuel mixture, I do have a Block Heater I installed while living in MN where the winters were brutal always a constant wind > 15 MPH.....I'll try to seek out another source for fuel. DICKFOSTER Hadn't shopped for Flex Tube before but I found Dynomax Galvanized 2" ID X 6' on EBay for < $20.00, did some measuring and I really need about 8' so a local auto parts place is selling the Walker Brand by linear foot, I'll see what it looks like today. BEENTHERE, I'm with you.......I need to get that smoke/fumes out of the garage, impregnates everything with that smell, not good + creeps in the house when opening the door however quickly. When I was a young lad in the Navy stationed on a Destroyer I slept on the bottom rack right above a Fuel Storage Tank Sounding Tube and the Engineers would take soundings using weighted metal tapes every day and diesel fuel would puddle on the deck (navy talk) below me, anyway that combined with my weak sea legs AKA SeaSic it was not a pretty sight...... so, I have a real aversion to that smell that lingers & gets on your clothing. Long story short, it has to go......TJKUBOTA93 The fan sounds like a good idea during exit & entry into the stall, as extra insurance I'll set up an old cheap 24" window fan I use when painting. DIESELCRAWLER Nice hearing from you again, as you've probably noticed, 790 working good after your assistance with that Fuel Shutoff Valve. I suspect you have all the proper welding equipment, etc. If this tractor was in a barn or shop away from the house I might consider that approach however that stub pipe's angle hits the snowblower square and backflows into the garage. Wife is getting a tad-bit testy.........

 

[sriddle1]

Quick Follow-up.........Found advertised 1-1/4 ID (slightly larger though) Walker Galvanized Flex Tube at the local Auto Parts Store @ $2.77 LnFt. As mentioned, the JD 790 Exhaust Pipe Stub is 1-1/4" OD. The Walker extension can easily be slipped over the JD Pipe + I'm installing a U-Bolt Exhaust Clamp to provide an anchor point for a temporary/quick release wire & attaching to the frame so the Walker extension doesn't slip down/off during start up. Decided to get a 9' length that protrudes a good 2'-3' beyond the snowblower face but rigid enough to stay somewhat horizontal once budgie'd to the Drift Blade. All seems sound on paper, now for the practicality of it during the next real snow event, we'll see.... Wish I would have come-up with this approach several years ago..........

 

[sriddle1]

Per my previous post ended up getting the 1-1/4" ID Walker Galvanized Flex Hose (more like 1-3/8" ID) and took the approach last described. We're getting 8-10" snow today and another 6-8" tomorrow so can't wait to try'er out. As you can see in the Pics, I attached the Exhaust U-Clamp to Flex and added a two-hole tab, one side attached to clamp bolt and the other used as an anchor for the Budgie, the 2nd PIC shows the Flex Bungie'd to the Drift Blade and At-The-Ready, once that garage door goes up I'll flip out the 3' length. I suspect I'll take it off once I get outside because the 3' it isn't rigid enough to stay horizontal but thinking about next Mod, devising a brace to slide over the Drift Blade, perhaps a PVC Pipe with a tee fitting and a 2' extension

 

[beenthere]

Once the garage door is open, I'd be out of it in less than 10 seconds. Then close the garage door. That'd be me.
Don't see that you will get much relief unless you are going to be letting it sit inside and warm up (in which case your bungie cord on the blower will melt from the heat.

Look forward to your results...

 

[sriddle1]

beenthere, The lower exhaust angled stub on the 790 is dead center to the back of the Front Mount JD59 Blower and despite the garage door being fully opened the initial start-up smoky blast comes right back into the garage. As explained in a previous post, the garage is attached to the house and that smoke/smell is not welcome inside the house.......... By coming-up with this easy-to-remove Exhaust Diversion after being safely away from the garage and doors closed should eliminate that lingering Diesel............I agree, we'll see how it works............

 

[dieselcrawler]

So if I understand correctly, this is only in use for the first few minutes, until your tractor is running and outside, at which point the bungie cord is released and flex pipe removed? Sounds like it should work just fine. The pipe will likely not get hot enough to damage the bungie on the blower... I think you have found a workable solution to your problem.

 

[pmsmechanic]

I had this issue with my 4410. I ended up buying the parts from John Deere to change my exhaust to a vertical one. One of my better moves as I no longer get exhaust in my face doing anything. I was thinking you could do the same thing and just put up a fan in the garage to blow the exhaust out while you are moving the tractor out.

 

[sriddle1]

So if I understand correctly, this is only in use for the first few minutes, until your tractor is running and outside, at which point the bungie cord is released and flex pipe removed? Sounds like it should work just fine. The pipe will likely not get hot enough to damage the bungie on the blower... I think you have found a workable solution to your problem.

dieselcrawler, Pulled the tractor out this morning to address the half frozen snowplow mound at the end of the driveway. Opened the garage door, started'er up and was delighted to see that initial Black Smoke Puff go shooting outside and away from the opening. Got the tractor a good 30 feet from the door, quickly disconnected the flex (sliding off the exhaust stub) then took the piece back into the garage and shut the door. Before returning to the garage I shut the tractor down, did my tuypical broom the snow off and out of the blower, then reconnected the flex and rolled it back in the garage and staged for next snow event. Just to be sure no melting, etc., disconnected the flex in the garage. No smoke what-so-ever in/out of the garage, mission accomplished. PS...Wife is a Happy Camper, the important thing.....
:cool2:

 

[sriddle1]

I had this issue with my 4410. I ended up buying the parts from John Deere to change my exhaust to a vertical one. One of my better moves as I no longer get exhaust in my face doing anything. I was thinking you could do the same thing and just put up a fan in the garage to blow the exhaust out while you are moving the tractor out.

pmsmechanic, I think dieselcrawler had mentioned he did something similar however the Attached Garage is really the issue. Before moving to NH I had a detached Implement Barn and an old JD3010, didn't care about the smoke/smell, it's a different story now.

 

[dieselcrawler]

Our goals were/are completly different, and we both have found workable solutions that suit us well... Glad to heat that your quick/easy/cost effective solution is working as desired.

For the others that may not want to sift thru the many pages of my exhaust build thread, here's the result, as of now, following the limb riser of the roll cage.

 

[beenthere]

Neat design on the exhaust.. Would there be a reason not to plumb that right into the riser and out the rear?

I'd like to put risers on my 4300 so I wouldn't have to fight the limbs in the woods (especially those that catch the ROPS and slap me in the back of the hard hat).