Straight Pipe Question

Been contemplating adding a straight pipe to my 450, as when it starts up, black liquid comes out of the muffler. I thought a curved pipe would help direct it away from the tractor. Is there anything I should be concerned with doing this. As always, thanks.
 
The straight pipe is a very bad idea. Not because the tractor will suffer, it does not make any difference at all to the way it runs. It matters to your hearing (mine is trash at Farmall frequencies and I have constant ringing 'tinnitus" in both ears. Please do not join the ranks of loud.
The glop is condensed water vapor removing carbon that has collected in the exhaust from short operating times. The cold metal collects soot and the water condenses, mixing and making black oily droplets that spit out. A curved outlet would fix the depositing of glop on the sheet metal, but it needs to be on a muffler to be best practices. Short duration operation that does not work the tractor to operating temperature is the main cause. These beasts are meant to work for a living, and were from the middle ages of sophistication. They are not regulated clean air computer controlled beauties like a modern car. Jim
 
I agree with Jim on this subject, hard on the old ear drums with a straight pipe. I was plowing one fall with my WD9 and the muffler cracked at the base. No time to get a new one before bad weather was coming in, so fabbed a straight pipe with an elbow facing forward. Wasn't toooo bad , but still loud. Go to an auto parts store or an exhaust-muffler shop and should be able to come up with an elbow to fit the top of your muffler.
 
Instead of taking the muffler off why not add a bend at the top by adding a 90 degree pipe. That way you save your ears and also direct the liquid away from the tractor.

That said it would be a good idea to figure out how water is getting into the exhaust since tha talso means it is getting into the engine which is not good
 
A straight pipe just makes a tractor sound better. I had hundreds of hours on tractors without mufflers and still have excellent hearing. However, I have to "pee" in the middle of the night which may have been caused by operating tractors without mufflers.
The straight pipe hearing loss is a good answer when you did hear to your wife!
 
I got a problem too with my hearing,but i blame it on the early tractor cabs, the first years it was just steel on steel, well the next year put some rubber belting in crucial spots etc,, but i have lost 35% of my hearing.
 
But i like the looks of a straight pipe too, but was wandering if i could fit a piece of auger flighting down the inside, they claim that will really quite them down, they use to be available for the big trucks !
 
(quoted from post at 22:55:09 04/16/17) But i like the looks of a straight pipe too, but was wandering if i could fit a piece of auger flighting down the inside, they claim that will really quite them down, they use to be available for the big trucks !

I have that style of exhaust on my Cummins 24 Valve and it is amazing how quiet it is.

I wouldn't mind trying that on my Super MD. If you find something that size please post back.

Dan
 
Straight pipe on a 450 will be pretty loud. Especially with a load at high throttle. Elbow on top of muffler outlet would be a better option than straight pipe without muffler.
 
I use the straight thru glass pack mufflers on all my tractors as replacements. They are about as quiet as the original and will last forever.
 
Will do Dan, i am going to look at these hog feeder bin makers, to see if they have the flighting , or steer me in the right direction.
 
Hi. The black liquid on start up is condensation(water). The cooler the outside temp. the more they will sober, until they are warmed up. If it continues after the engine is warm there are other issues. A curved pipe will direct the moisture from the tractor. Cheers Russ
 
Ive herd that ethanol gas can make the water vapor worse? Be careful who is next to you with the curved pipe. I wouldnt like to be next to it at a tractor show getting sprayed!
 
I have run straight pipe or a muffler and if your going to use it all day long you don't want a straight pipe. They make a lot of noise with a straight pipe.
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If you are going to run a straight pipe on a tractor that you will be in the seat of for a while, hearing protection is a good idea.
If you are just going to be at tractor pulls then your exposure time will be limited.
 

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