Well, I bit a few bullets for an underslung exhaust.

[Chris B. Memphis TN.]

1" NPT tap, 12 ton pipe bender from Northern Tool, 1" Union, 1" street elbow, 6' x 1" NPT black pipe. Thing is I get this one done I have another to do. I'll get pics. Tried to clean the manifold with a pipe nipple. Just too corroded. About $35. With tax for exhaust materials. Was tired of the exhaust in my face.

[tmays]

Well that should be heavy duty!

[coppersmythe]

1" NPT tap, 12 ton pipe bender from Northern Tool, 1" Union, 1" street elbow, 6' x 1" NPT black pipe. Thing is I get this one done I have another to do. I'll get pics. Tried to clean the manifold with a pipe nipple. Just too corroded. About $35. With tax for exhaust materials. Was tired of the exhaust in my face.

in this age of " what's the cheapest " , it's good to see something somewhat overbuilt for a change . refreshing . coppersmythe..................

[NJ Farmer]

Kind of like the way the Farmall Cub was built! I am sure that the original designers NEVER thought that the Cub would be around this long and stronger then ever. A true testament to American engineering.

72 years and counting.....

[Lt.Mike]

Guessing this for your loboy as a PO probably had converted it to a vertical exhaust. My ‘58 had that done and my intent is to restore it to a lowered exhaust.

[Chris B. Memphis TN.]

No, it's a full size approximately 1951 Cub. Had a vertical exhaust. No serial plate. This was dated based on the castings numbers. Got the manifold retapped. Street elbow installed, nipple then half of the union. Manifold & threads all got antiseize grease. In process of bending pipe now. Does bend easy enough with the 12 ton hydraulic jack. Had to stop to get in line picking up grandkids from school. The $27. 1" NPT tap off Amazon did great. Lot's better than the $160 for the same being offered in Memphis.

[Chris B. Memphis TN.]

I don't think wife will miss the stainless grill fork I used for a hanger strap. I did relocate the fuel line after the picks.

[Mac AR]

Looks like you did a good job! But, I'm curious. How loud is it in comparison with the vertical exhaust? Probably isn't too bad since it's A) behind you and B) a longer pipe. When I got my '51 it had a piece of black pipe in it about a foot long, and it was loud as heck when under a load. I slipped a piece of larger pipe about 3' long over it until I could get a muffler, and it really helped. My ears wouldn't ring after 30 minutes of running it at least. The muffler really helped. I suppose if you were so inclined you could splice one in.

Mac

[Dale Finch]

How close is the pipe to the bottom of the gas tank? I assumed that that was why IH put that early bend down at an angle away from the tank.

[Chris B. Memphis TN.]

It is touching the bottom of the tank. As gasoline has a flash point of 495 degrees F., it is a closed tank and good air movement from the fan, I'm not worried. I had a 20" vertical exhaust. I was always surprised by how quiet it was. About the same noise level without the exhaust in your face. And where the hole for the exhaust was, I used a cut up coke can held in place till 5 minute epoxy hardened.

[Slim140]

It is touching the bottom of the tank. As gasoline has a flash point of 495 degrees F., it is a closed tank and good air movement from the fan, I'm not worried. I had a 20" vertical exhaust. I was always surprised by how quiet it was. About the same noise level without the exhaust in your face. And where the hole for the exhaust was, I used a cut up coke can held in place till 5 minute epoxy hardened.

I think I'd rethink this. What happens when you turn the tractor off and all that heat is still on that pipe with no air movement? These are the stories you read about in the news.

[Glen]

Hi,
You were saying that the pipe bent easily with the equipment you have, probably not hard to change the shape of it, or start over using another piece of pipe, if needed.

If you have any interest in changing the shape of the pipe, here are pics of the pipe from the 1955 Cub owner's manual, you can see the shape of it.

http://farmallcub.com/rudi_cub/www.clea ... age-03.jpg

http://farmallcub.com/rudi_cub/www.clea ... age-65.jpg

Below is a listing at TM Tractor for the pipe, it has pics you can look at.

http://www.tmtractor.com/new/ae/2371fp.htm

[Ky Cub]

So the pipe is touching the bottom of the tank. I wonder what happens when the pipe eventually wears a pin hole in the tank?

[Cubfriend]

Please take this as constructive and not critical of your work. I would highly recommend rerouting the pipe so it does not contact the fuel tank and have a good margin of clearance. There might be something that would screw into the street elbow in the manifold that has a small jog in it. Not sure if it’s made in black pipe, but I think I have seen it in conduit. I would hate to see anyone get hurt by taking a short cut. Please reconsider your construction if you have family that cares about you and depends on you. Good Luck and be safe.

[Glen]

Hi,
IH had problems with the gas boiling in gas tanks the way the Cubs originally were made.

Having the pipe close, or touching the tank, adds even more heat than the original exhaust systems.

Below is info about the free gas cap, which they offer to help the problem.

Below are pics of the cap at TM Tractor.

http://www.tmtractor.com/new/fl/fuelcap.htm

This page below has info about the problem.

https://www.ihgascap.com/index.aspx

As I remember hearing from my local Case IH dealer, the problem is worse in hot climates, and if you are working the Cub, like mowing with a rotary mower. But, your pipe is against the gas tank.
Anyway, we don't want you hurt from a gas fire, which is why we suggest changing the pipe.