straight pipe

(quoted from post at 14:24:29 01/07/10) Hey guys, would it hurt the engine on a 49 n to run a straight exhust pipe? I know some engines need back pressure.
o to both sentences, but it will ultimately result in your hearing loss.
 
It probably won't hurt the engine, since it's likely very "loose", and already a poor breather, by design, but it might hurt your insurance rates and liberty if you allow a spark to get through to a dry field, and burn up your neighbor's house/barn/crops/horses.

The muffler on most tractors includes a spark arrestor for a very good reason we would all do well to respect.
My 8N
 
My 2N came to me that way, a little noisy but I've had it several and haven't changed it yet.
 
I have a dual intake/exhust manifold that I had made and put it on a 49N with chrome straight pipes out & up over the hood.Sounds "awsome".I had it made because my tractor friends have the loud green tractors.Really pretty at idle.Removed and stored it this past year.Too loud for old ears.
 
Will not hurt it or help it. But it will help you not hear things as good over time. That said I have tractors that have no mufflers on them and I like the way they sound
 
It has a good sound :D...No pipe at all on this one..LOL...I have since put the vertical exhaust on. It has a shorter muffler then the horizontal system. Has a good sound.
No tail pipe
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My 2N has a straight pipe out past rear axle and it's no louder than it was with a muffler.I have to stand directly behind it to tell any difference.
 
(quoted from post at 16:54:23 01/07/10) My 2N has a straight pipe out past rear axle and it's no louder than it was with a muffler.I have to stand directly behind it to tell any difference.
1) you needed a new muffler.
2) you hearing already damaged.
3) all of the above.
 
No one mentioned that the muffler is supposed to have spark arresting qualities. Straight pipe may not an issue plowing snow but not the top choice for a dry hayfield.
 
I would doubt that the stock muffler has any spark arresting capability and actually is more of a sound amplifier than a straight pipe.Performance wise I'd say no difference.A spark arrestor would be a good option with either system as lond as it didn't increase back presure.
 
Fixing up my new 8N the last few days I noticed the muffler nearly crushed shut in the middle. Maybe a snow pile or rock or something? My friend Ernie suggests a straight pipe. We've had lots of marine and farm engines running un-muffled so I figure - Why not? Put a straight vertical pipe on the tractor. It wasn't loud but the sound was shall we say "concussive". It just gave me a headache. Ripped it off. Cut the old pipe in front of the muffler and put a new one on. You want a new vertical straight setup let me know. I'll give you a great deal on one.
 
Won't hurt anything, I ripped my down stack off in a snowbank last year, and bent a stack to fit going up. Finished the winter with it wide open...I did, however put on a muffler this spring, b/c it was a little loud, not bad though.
 
the 8n muffler- is a spark arrestor. In any case, a pipe is needed to keep cool air from hitting the hot exhaust valves. Almost all farmers have severe hearing loss from the exhaust. Back pressure is not a measurable issue.
 
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