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Exhaust stack

Forum Forums Help Me Find A Part Exhaust stack

This topic contains 7 replies, has 3 voices, and was last updated by  Piper184 6 months ago.

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  • #46999

    fzr1000
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    I have a Jinma 354 with a Spirit front end loader. When I had it fitted by a local dealer (now out of business) he had to change out the exhaust system pipe on the tractor (the pipe going from the header to the exhaust stack) with one from another Jinma model because it wouldn’t clear the front end loader frame :scratch: (Original one went straight out of the header and curved up to the exhaust stack. The replacement one fitted for the front end loader comes out of the header and turns aft then up to the exhaust stack). Everything was fine until age happened and it has now corroded beyond repair and needs to be replaced, and I cannot find one shaped like that.
    Has anyone had the same pipe fitted to their tractor and/or know where to get this exhaust pipe?
    Thanks :scratch:

  • #47000
    Bob Rooks
    Bob Rooks
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    I would just take the old one to a muffler/exhaust pipe shop. They can duplicate it and use your old flange.

    Yuchai dozer, Mustang skid steer, Mitsubishi mini-ex, Dual Dozer w/twin laser receivers, '50 Ford COE transit mixer.

    • #47001

      fzr1000
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      I tried doing that at a local exhaust shop that had welded up the cracks in it several times, but they said they didn’t have that kind of pipe size to make a new one. But I’ll try a different shop and see if they can do it instead.
      Thanks

  • #47002
    Bob Rooks
    Bob Rooks
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    The pipe size isn’t critical as long as it isn’t more that 1/8″ smaller. Muffler shops will have pipe expanders to compensate for the metric pipe size. I found a regular elbow that fit perfectly over the metric pipe with just a little persuasion.

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    Yuchai dozer, Mustang skid steer, Mitsubishi mini-ex, Dual Dozer w/twin laser receivers, '50 Ford COE transit mixer.

  • #47004

    Piper184
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    Just tossing out some ideas.

    Standard exhaust pipe is fairly thin so that it can be easily bent to any shape needed. That leads to a shorter life span. Perhaps a heavier walled pipe would be appropriate in this application. Does it have to support the muffler without any other brackets? This piece still has a flange on each end? Post a picture of the current setup if available.

    Maybe you could use standard plumbing pipe fittings welded into the shape you need and with the flanges welded onto each end. The flanges themselves should be fairly straight forward to manufacture out of plate steel. Schedule 40 pipe fittings might be overkill but they should last forever. :)

    Steel pipe that is thicker walled than exhaust tube but thinner than schedule 40 stuff should be able to be bent into shape, but if not, it can be cut and welded at the corners. More tedious to make but more flexible in design.

    Speaking of flexible, a lot of modern vehicles use a braided flex pipe from the header to the main exhaust pipe or sometimes all the way to the catalytic converter. It might take a lot of searching, but there might be something out there that would work for you. The problem would then become how to support the muffler with some kind of bracket.

     

  • #47005
    Bob Rooks
    Bob Rooks
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    EMT electrical conduit is somewhere between schedule 40 pipe and exhaust tubing but your bending radius is going to be restricted to that of schedule 40 pipe.

    If you want something that will last forever, I suggest using plain black steel butt-weld short radius elbows.

     

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    Yuchai dozer, Mustang skid steer, Mitsubishi mini-ex, Dual Dozer w/twin laser receivers, '50 Ford COE transit mixer.

  • #47007

    Piper184
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    Agreed. I wasn’t thinking of bending the schedule 40 stuff but rather trying to find a pre-made elbow or two that could be welded together to get the needed configuration, then weld the flanges to that.

    Luckily around here there are a few custom machine/welding shops that carry a lot of different steel products and are very good at “in the field” engineering. If we think up something they don’t have supplies on hand for, they can usually get them in a day or two.

    EMT can be problematic to weld in the smaller configurations. Never having messed with anything larger than about 1″, I am guessing that the wall thickness increases with the diameter so that something in the 2″ range may be quite easy to weld. Just beware of ventilation when welding galvanized items.

    I am sure something can be fabricated once the right parts are located. I always enjoy these kinds of projects if I’m not under time pressures.

  • #47008

    Piper184
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    Looking back at the original post, have you tried looking at the online parts catalogs of a Jinma dealer to see if you can find the exhaust part that looks like yours? If you are sure that it came from a different model Jinma once you find something that looks right, one of the dealer/sponsors of this list may be able to get actual dimensions for you.  If you can take a picture of the part you are looking for and post it that should help a lot.

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