L2501 - broke the exhaust manifold

[GeoHorn]

Without getting too far into Metalurgy 101, suffice it to say that cast iron's most identifying trait is it has WAY too much carbon to form anything strong - like steel for instance which is between 0.2 and 0.95 percent carbon. Yes, the whole vast worldwide steel industry lives between zero and one percent carbon. (look up "iron-carbide diagram"). Dead-soft steel has around 0.2 % C and the highest-zoot tool steels have around 0.95% C.

Cast irons typically contain 4 to 6 percent carbon. The excess C forms tiny islands in the grain structure, greatly reducing tensile strength. Its cheap and easy to make in odd shapes, so its used for lots of things. Just don't pull on it too hard. Most cast iron is 3 or 4 times weaker in tension than in compression - like concrete. Welding it causes widespread thermal micro-cracks all around the area that can't be eliminated without re-melting the whole thing. The part is always compromised after that.

There are lower-carbon alloys like ductile or malleable iron which are stronger but also more expen$ive to make. Sorry for the lecture, I used to teach this stuff to engineering students, and I fully recognize "a little knowledge is a dangerous thing". There are a lot of people sticking cast iron back together thinking they are "welding" it - but in almost all cases it's just a bigger bag of invisible internal cracks with way less than original strength. Dick B.

I think it’s fascinating and Thank You! Can you tell me what it means when a seller of cast cannons describes it as “grey iron”..?? Is that somehow stronger….or not…?

 

[GreensvilleJay]

has a lot of graphite in it, so stronger.
'pure' iron (cast iron) isn't .

 

[muddhogg]

Anybody know the torque specs for the bolts on the manifold?

 

[TheOldHokie]

Anybody know the torque specs for the bolts on the manifold?

10"" long ratchet handle tight

Dan

 

[muddhogg]

10"" long ratchet handle tight

Dan

Nope. Been down that road, not breaking anymore bolts.

 

[GreensvilleJay]

little 's' snug, run for 1 hour to get hot, then another little 's' snug.

you'd think the WSM would have the spec in it, somewhere.......

 

[TheOldHokie]

Nope. Been down that road, not breaking anymore bolts.

Torque charts abound. Bolt/stud size and grsde 8.8.

Dan

 

[Runs With Scissors]

That sucks man, but 200 bucks ain't that bad in the scheme of things today.

Hell, just not going to Taco Bell a couple of times will pay for that quick....(Taco Bell prices are crazy now, don't get me started. )

You made the right call for sure.

 

[fried1765]

That sucks man, but 200 bucks ain't that bad in the scheme of things today.

Hell, just not going to Taco Bell a couple of times will pay for that quick....(Taco Bell prices are crazy now, don't get me started. )

You made the right call for sure.

Even the "taco folder" person probably gets at least $15 per hour these days.
I think it all falls within the definition of "Bidenomics"

 

[JimmyJazz]

I'm good at breaking things.

Was clearing up some woods today, pushing over some small trees, etc... and then, whammo! I was backing up after pushing a small tree and the tree decided it would attack me and as I backed up it snuck up in the tractor got hung on the exhaust tip and cracked the manifold. How in the world can such a small tree break this steel. Oh well, it did. Tractor got LOUD immediately so I figured something with the exhaust, sure enough. At least it didn't get the radiator/fan.

Thinking I might just tack weld it, would you do that? vs buying another manifold.


View attachment 118140

View attachment 118141

JB Weld makes a high temperature version for manifolds. I just applied a bot to a small hole on the side of my sauna stove. So far so good. I realize this is a hillbilly style repair and may not offer a permanent solution. For

I'm good at breaking things.

Was clearing up some woods today, pushing over some small trees, etc... and then, whammo! I was backing up after pushing a small tree and the tree decided it would attack me and as I backed up it snuck up in the tractor got hung on the exhaust tip and cracked the manifold. How in the world can such a small tree break this steel. Oh well, it did. Tractor got LOUD immediately so I figured something with the exhaust, sure enough. At least it didn't get the radiator/fan.

Thinking I might just tack weld it, would you do that? vs buying another manifold.


View attachment 118140

View attachment 118141

JB Weld makes a few high temperature tolerant "solutions" for your problem. I just patched a small crack in my sauna stove with one and so far so good. I realize this is possibly not a long term solution but for $9.00 I figured its worth a try. I have had great luck using JB Weld in the past. Good luck.

 

[JimmyJazz]

That sucks man, but 200 bucks ain't that bad in the scheme of things today.

Hell, just not going to Taco Bell a couple of times will pay for that quick....(Taco Bell prices are crazy now, don't get me started. )

You made the right call for sure.

The best deal in fast-food land is the $3 double cheeseburger "bundle" at McDonalds. Or "Dons" as the cool kids say. Thats $3 for a double cheeseburger and fries. A 6 ft tall 120 pound 15 year old male will consume 2 bundles , a 10 piece chicken nugget order and a large milkshake in under 20 minutes. My 15 year old considers his physique " aerodynamic". McDonald's has an app that lures many with regularly offered deals. Before they recently closed the location near my office there were many patrons extolling these virtues. There are no longer any "Dons" in Downtown Pittsburgh. So sad. Merry Christmas!

 

[Henro]

I guess I’m easily confused. What tractor is being referred to in this thread?

The manifold dustyrusty posted the link to looks exactly like what is needed. But it’s not listed for an L2501, except for the L2501F which is a 2 Wheel Dr. tractor. OR the l2500DT.

But the OP lists his tractor as a l2501DT.

An on-line image for the L2501 shows this:

Looks different that what the OP posted. When reading the OP’s first post, I imagined a vertical stack coming out of the hood.

what are my missing?

 

[Orange man]

That is not a L2501 in the USA, no DPF on a L2501.

 

[GreensvilleJay]

Kubota #1G866-12310 MANIFOLD, EXHAUS

MANIFOLD, EXHAUS

messicks.com

seems that manifold fit 63 models !
seems to connect to an oval muffler ( see post #1 picture )

 

[ken erickson]

I guess I’m easily confused. What tractor is being referred to in this thread?

The manifold dustyrusty posted the link to looks exactly like what is needed. But it’s not listed for an L2501, except for the L2501F which is a 2 Wheel Dr. tractor. OR the l2500DT.

But the OP lists his tractor as a l2501DT.

An on-line image for the L2501 shows this:

View attachment 118410

Looks different that what the OP posted. When reading the OP’s first post, I imagined a vertical stack coming out of the hood.

what are my missing?

Agree with Orange Man, looks like it could be a L3301 or L3901.

 

[DustyRusty]

Even the "taco folder" person probably gets at least $15 per hour these days.
I think it all falls within the definition of "Bidenomics"

Heard on the news yesterday that 16 states are going to a $16 minimum wage on January 1st. When I had my first job, it was $1.50, and after a month they gave me a nickel raise.

According to Google AI, The Fair Labor Standards Act (FLSA) of 1938 set the minimum wage at 25 cents per hour, which is equivalent to $5.20 in 2022 dollars. In 1949, the minimum wage was increased to 75 cents per hour for all workers, and in 2009, it was increased to $7.25 per hour.

 

[fried1765]

Heard on the news yesterday that 16 states are going to a $16 minimum wage on January 1st. When I had my first job, it was $1.50, and after a month they gave me a nickel raise.

According to Google AI, The Fair Labor Standards Act (FLSA) of 1938 set the minimum wage at 25 cents per hour, which is equivalent to $5.20 in 2022 dollars. In 1949, the minimum wage was increased to 75 cents per hour for all workers, and in 2009, it was increased to $7.25 per hour.

I guess I am a bit older (or you had a better job?)
My first job paid $1.00 per hour (1953),....at a local small grocery store.

 

[Henro]

seems that manifold fit 63 models !
seems to connect to an oval muffler ( see post #1 picture )

I know. But the L2501 is not listed as one of them...that is what confused me. (except for what I listed, which was the 2wd drive model).

Also I can't find a photo of a L2501 with a vertical stack. All I find is photos where the exhaust exits similar to shown in that photo I posted above, where the pipe exits near the left front wheel...

Of course I may be missing the obvious. Won't be the first time...

 

[retired farmer]

Guess I got cheated, the bums. In 1962 I was paid 50 cents an hour to drive survey stakes in a cotton field, which soon became a housing development.
rr

 

[Henro]

Agree with Orange Man, looks like it could be a L3301 or L3901.

I don't doubt that at all. I just posted an image after a search. BUT the exhaust pipe seems to exit the same as other images of L2501 tractors I found on line.