Radiator Overflow Pipe

[goxu1]

Is the radiator overflow pipe 5/16 OD steel pipe ?

[Don McCombs]

This is the brass overflow line on my 1978. I'm assuming(you know what that means), that everything previous is also brass.

[Bill V in Md]

Below is a link on how to fabricate a steel radiator overflow tube. 5/16” steel tubing was used (5/16” OD):
viewtopic.php?f=1&t=38056&p=310908&hilit=radiator+overflow+tubing#p310908

[Glen]

Hi,
Below is a listing at TM Tractor for a new overflow pipe, if you need to see the shape of it.
The listing has several pics.

http://www.tmtractor.com/new/co/144fp.htm

[goxu1]

Ok , Ive got a TM pipe and it seemed to be way off. Maybe I'll try and give a tweek and get it to work.
Looking at his photos , it seems like the fitting on the neck of the radiator has been removed and the pipe fitted straight into the neck ?
Would the original pipe have a swaged end to fit over the fitting on the neck ?
Should they be steel or copper ?

[69ranger]

After reading about some suggested fixes that others had done, I decided to fix mine with a piece of 1/4 copper tubing. I flared the end with a tapered punch, and slipped it over the stub that was left from the original, and soldered in on.

The soft copper is easy to shape, and I used some pieces of thin metal to make clips to hold the finished produce.
Seems to be working really well.

Good luck with your project..

[Bob McCarty]

Paul, My thought is that the copper would be much easier to bend and function the same way. I don't know that your Cub would see the hours needed to work harden copper. Even if it did, there wouldn't be a safety problem like a leak from a copper gas line causing a fire.

[goxu1]

ok , I'll give the copper a go.

[Don McCombs]

Looking at his photos , it seems like the fitting on the neck of the radiator has been removed and the pipe fitted straight into the neck ?
Would the original pipe have a swaged end to fit over the fitting on the neck ?

There is no fitting. The overflow goes straight into the filler neck and is soldered in place.

[Jim Becker]

Looking at his photos , it seems like the fitting on the neck of the radiator has been removed and the pipe fitted straight into the neck ?
Would the original pipe have a swaged end to fit over the fitting on the neck ?

There is no fitting. The overflow goes straight into the filler neck and is soldered in place.

Yes. And as I recall the one I installed, there was a bit of extra length on the replacement tube. I checked the fit then trimmed off some to make a nice fit.

[Glen]

Hi,
There is a clip at the bottom end of the overflow pipe, to hold the pipe in place.
The fan is close to the pipe.

Below is a listing at TM Tractor showing the clip, the pic shows where it goes.

http://www.tmtractor.com/new/co/129fp.htm

[goxu1]

Some difference between what you buy and what you get....

[Don McCombs]

Over the course of production, there were two different filler neck heights. Perhaps TM's pipe is made for the longer height. If so, their product description should point that out.

[Bill V in Md]

Yeah, that is not a matter of trimming the ends to get a proper fit, because the bends are not going to fit your radiator. Also, maybe it is the photo, but some of those bends in the new tubing look like they have been flattened.

[goxu1]

The bend angles look a couple of zip codes apart to me