exhaust question

[Tall T]

If you're a good welder, repair the manifold. If not (like me,) replace it.

If you were my neighbor and still have the broken off piece, I'd braze it back on with Oxy/acet after
deeply V-grooving the breakage line.

P.S.
I'd take the manifold off so as to be able to do the repair horizontally.

 

[Tall T]

alright so here's my temporary fix until I am able to replace the pipe and manifold. it is made of a pop can and tie wire. surprisingly it aims the exhaust away from the gas tank and somewhat out of the pipe, unsurprisingly it causes loss of power and it sounds awful. I would've used JB weld or muffler tape but I had none and we live pretty far from where I can get some. I had to use what I had which was of course pop cans and tie wire. View attachment 106093View attachment 106094

Next time mount the header pipe and exhaust pipe properly, to relieve stress at the header flange.
And don't have the tailpipe sticking out so far that it increases the possibility of jamming it into something.

 

[Tall T]

just buy a new manifold it will much cheaper than fixing it

Even if he buys a new one he still has the labor of removing the manifold,
so the only expense would be a brazing rod or two and a bit of Oxy/acetylene.
But if he doesn't have his own welding equip or a welder friend, then I agree, buy a new one.

 

[Tall T]

Mine came with the vertical exhaust. I was astonished to learn how thin of a branch can knock that thing off. It essentially boiled down to "If you can see it, it can knock the muffler off." That's why mine is under the running board now. But I have the luxury of not needing to worry about setting my lawn on fire.

Fields of plants loved being cultivated with propane powered tractors especially if they had underbelly exhaust because the products of combustion bathing the plants, were Carbon dioxide and water vapor. Minneapolis Moline is notable for having sold a lot of propane powered tractors.

 

[Mad Farmer]

I broke my manifold in the same place plowing snow. Went over a ridge of ice and the muffler bottomed out.

It was winter and I had to work outside, so.......I went to the parts store and bought a piece of stainless flex pipe that would fit over the broken manifold outlet/stub and secured it with an automotive muffler clamp. Plowed the rest of the winter that way with the pipe snaked back where the muffler used to be. No fumes but louder.

Concerning new manifolds test fit them before putting them on with a gasket with sealer, and/or painting it. I got one that absolutley would not allow the linkage from the governor to the carb to hook up even with grinding or trying to bend the rod.

Also test that you can get the manifold nuts on and get at them with a wrench/socket. A die grinder or dremel for that.

I've replaced the manifold 3 times, ~35 years ago when the original rotted out that one fit up without problems, the next replacement for the broken one had the fitment problems so it got sent back (~16 years ago), it's replacement fit but needed grinding around where the nuts go.

If you have the manifold off it's a good time adjust valves.

 

[Kondoge]

thanks for the advice and I will make sure the new one fits