Quiet exhaust

   / Quiet exhaust #1  

chrisser

New member
Joined
Dec 3, 2007
Messages
20
Just bought myself a '62 International B414 tractor.

Has a four cylinder gasoline engine with 43 HP at 143 c.i. I believe the max RPMs are 2000.

The original exhaust went straight down out of the manifold and then was routed under the tractor.

That was removed long ago, the original pipe out of the manifold was crudely bent into a U, and a hole was cut into the hood onto which a slip-on muffler was added.

The U has several cracks in it, and between that and the leaks where the muffler slips on, its enough to wake the dead when it runs. Plus I have to wait for the muffler to cool before opening the hood, and it just plain looks hokey.

I haven't found anyone to supply the exhaust pipe, so I'm resigned to building a system myself, which is not a problem. But I'd like to make the exhaust as quiet as possible without a bunch of expensive trial and error.

Would it be any benefit to use a car muffler vs a tractor muffler? I'd really lilke to quiet this thing down a lot - I think its a lot safer and my neighbors will appreciate it too.

Can anyone suggest mufflers they've used on similar-sized engines that would work well or offer any suggestions?

Thanks in advance!
 
   / Quiet exhaust #2  
Since it is a gas burner if you have places like Midas Muffler or one of them give them a shout and ask what they have. You have the skills so it should not be too hard. Then strain relief it so it isn't hanging from the exhaust manifold..
 
   / Quiet exhaust #3  
Any industrial cylindrical reverse flow muffler with the correct size inlet and outlet will work. Tractor Supply has various sizes on the shelf.
 
   / Quiet exhaust
  • Thread Starter
#4  
Since it is a gas burner if you have places like Midas Muffler or one of them give them a shout and ask what they have. You have the skills so it should not be too hard. Then strain relief it so it isn't hanging from the exhaust manifold..

I thought I'd incorporate a flex pipe section shortly after the manifold as is used in many FWD vehicles. It's a metal bellows inside a metal mesh sleeve. They will absorb a fair amount of angular deflection by the rest of the exhaust, as well as cushion any hits or pulls. Then use standard rubber strap hangers for the rest.
 
   / Quiet exhaust #5  
Flex pipe works I was not a big fan of it since it may burn out quicker than solid pipe. But it's not like you are driving on the highway with higher exhaust temps. Make sure you dump the outlet far enough away from the operator if you were to be sitting on it idling for any length. Even an open cab carbon monoxide can be an issue. Now you will have to post pre fix and post fix pictures so we criticize your welding skills :confused2:

Hey 5030 I like that bike picture!
 
   / Quiet exhaust #6  
You should be able to shop out a muffler at NAPA from their catalog. Jeg's has a nice catalog for hi-per mufflers. i like the turbo- mufflers on my v-6 engines for a nice tone. I even used car muffler to tone down my diesel truck roar.
 
   / Quiet exhaust #7  
The engine is mounted solid to the frame (no rubber mounts) so exhaust and muffler can be solid mounted as well. Rubber hangers can get worn or tear loose if you snag it on something. IMO it would be better to mount it all rigid.
 
   / Quiet exhaust
  • Thread Starter
#8  
The engine is mounted solid to the frame (no rubber mounts) so exhaust and muffler can be solid mounted as well. Rubber hangers can get worn or tear loose if you snag it on something. IMO it would be better to mount it all rigid.

I was thinking that there might be issues with expansion/contraction as the pipes heat up cool down. I can always weld up another pipe, but I don't want to crack the old exhaust manifold.

But if that's not a concern, solid-mounting it would be much easier...
 
   / Quiet exhaust #9  
I have noticed tractor exhaust brazed or silver soldiered before..and manifold repaired the same way.. You can probably still get another new one for it? personally I always hated header burns ..
 
   / Quiet exhaust
  • Thread Starter
#10  
I have noticed tractor exhaust brazed or silver soldiered before..and manifold repaired the same way.. You can probably still get another new one for it? personally I always hated header burns ..

It's not just whether or not I can get a new manifold that concerns me - it's been on there 50 years. Likely one or more bolts will break off trying to unbolt it. Worse case then that could mean drilling out and retapping the block. I dont mind doing that if I have to, but I'd rather not have to do it because I didn't think out the exhaust well enough.

If that happens in my driveway now, not such a big deal, but this is going to be left at our property in WV. It's four hours away and I don't cart my workshop and all my tools down with me everytime (unless you believe what my wife says :laughing:...)

Of course, anything I put together can't be that much worse than what's hanging on it now...

Maybe the best course of action is to keep the flex coupling between the manifold and the rest of the system, so there's some expansion between the manifold and the remainder, then bracket the rest solidly to the chassis.

I'll try and get a pic tonight of what's on there now. I won't be working on the exhaust for a day or two - have to clean up the garage a little to get the thing in there so I can work on it at night and in the rain.
 

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