Pipe inside a pipe inside a pipe?!?

[BlueSedan]

Hello guys!

I have a unique problem here. I need to replace a muffler in my 1967 Ford P5 17M
The exhaust is pretty much slip fit.. So i used a hacksaw to cut the muffler out and i’m left with a single back pipe and two front pipes..
The front pipes need to be cut without damaging the pipe inside so i can slip the new muffler on top with ease…
And the rear pipe needs to be cut so the outer pipe is not damaged.. But the pipe inside gave me a surprise.. There is a third pipe inside for no reason..

How do i take the pipes inside off?

[IMG]http://i277.photobucket.com/albums/kk78/lollipop111_2008/1967%20Ford%20Taunus%20P5/IMG_20170420_151921.jpg[/IMG]

[IMG]http://i277.photobucket.com/albums/kk78/lollipop111_2008/1967%20Ford%20Taunus%20P5/IMG_20170420_151713.jpg[/IMG]

[IMG]http://i277.photobucket.com/albums/kk78/lollipop111_2008/1967%20Ford%20Taunus%20P5/IMG_20170420_151824.jpg[/IMG]

[IMG]http://i277.photobucket.com/albums/kk78/lollipop111_2008/1967%20Ford%20Taunus%20P5/IMG_20170420_165322.jpg[/IMG]

Offcourse it’s easier to just hack the old pipe and just use a piece of pipe and two clamps to connect the muffler to the pipe.. But no store that i know of in finland sell exhaust pipes that have a inner diameter of 1.81102362 inches… or 46 millimeters.. So if i can salvage the old pipe somehow, that’d be awesome..

The pictures show my struggle..
What my next move is: Take a hacksaw blade and cut the pipe inside with it carefully until it starts to give in.. Not sure if it’ll work out though..

And before the obvious: “torch it” comments.. It’s the method i tried first and tried again after hacking it in two.. I took some vice grips, heated the outer pipe red hot, hammered the vice grips that were crimping on the inner pipe.. And the images show the results..

Help me eric!

Topic

[Mike]

We didn’t have the Ford Taunus in North America, so I’ve never seen one in real life. From what I remember, they were pretty popular in Europe.

From your photos, it seems the location of the muffler is unusually far forward. It seems like it’s located under the floor of the passenger compartment, maybe even as far forward as under the feet of the front seat occupants. Just guessing here, but maybe the third internal pipe is a remnant of double-wall exhaust tubing construction. The double-wall construction, and the dead air space between the pipe walls, might have been meant as a form of insulation to slow down the transfer of exhaust heat to the cabin floor, for the comfort of the occupants.

Now, as for getting the old hacked-up pipe out of the tail pipe. You could try spraying penetrating oil into the joint between the pipe walls and let it soak for several hours, preferably overnight. If you are feeling more destructive, you could try hammering a screwdriver into the joint at several points around the circumference, and wiggle the screwdriver around a bit. Doing so might eventually release the bond between the pipe walls, but it could also wrinkle and crease the outer pipe, making it difficult to get a gas-tight seal when the new muffler is installed. To me, it looks like the flared joint section of the tailpipe is already damaged and compromised.

For a slight increase in expense, maybe the easiest and most effective method of fixing things would be to cut the entire joint off the tailpipe and have a muffler shop fabricate a short length of appropriately flared slip-fit connector pipe between the tailpipe inlet and muffler outlet.

[BlueSedan]

[quote=”Evil-i” post=186900]We didn’t have the Ford Taunus in North America, so I’ve never seen one in real life. From what I remember, they were pretty popular in Europe.

From your photos, it seems the location of the muffler is unusually far forward. It seems like it’s located under the floor of the passenger compartment, maybe even as far forward as under the feet of the front seat occupants. Just guessing here, but maybe the third internal pipe is a remnant of double-wall exhaust tubing construction. The double-wall construction, and the dead air space between the pipe walls, might have been meant as a form of insulation to slow down the transfer of exhaust heat to the cabin floor, for the comfort of the occupants.

Now, as for getting the old hacked-up pipe out of the tail pipe. You could try spraying penetrating oil into the joint between the pipe walls and let it soak for several hours, preferably overnight. If you are feeling more destructive, you could try hammering a screwdriver into the joint at several points around the circumference, and wiggle the screwdriver around a bit. Doing so might eventually release the bond between the pipe walls, but it could also wrinkle and crease the outer pipe, making it difficult to get a gas-tight seal when the new muffler is installed. To me, it looks like the flared joint section of the tailpipe is already damaged and compromised.

For a slight increase in expense, maybe the easiest and most effective method of fixing things would be to cut the entire joint off the tailpipe and have a muffler shop fabricate a short length of appropriately flared slip-fit connector pipe between the tailpipe inlet and muffler outlet.[/quote]

Thanks for the response!

Yes this is a well known european ford made in germany. It was competing with the VW bug that made only 22 hp.. While this ford made 70.. So you know that it was pretty much sought after car back in the day as it was a cheap economic car for the working man..

Yes the muffler is called the “middle muffler” and it’s connected to the exhaust headers in the front and it’s located under the front passenger seat. It does have a heatshield and two muffler hangers.. You need a muffler hardware to connect it to the rubber bushings. The muffler is slip joined to the headers and the rear pipe.

I pretty much got fed up with this pipe and i just used a hacksaw to cut the rear pipe and a grinder to cut the front pipes off from the headers.
Sure it’s not going to be museum quality because it will have a piece of pipe with two clamps on the rear pipe but i just wanted it done in the weekend..
It was just too much trouble to deal with.

Hey, have you ever heard a V4 engine with straight pipes? Well now you have:

[video]https://www.youtube.com/watch?v=V18K5PpO8GE[/video]

[Author]

Replies