1923 Gotfredson 20B -- Exhaust pipe donut flare

[Gotfredson]

Hi y'all, I need to replace this exhaust pipe (from manifold to muffler) on a Buda engine.  Does anybody know what tool I can use to create this flare?  It's 3/4" in from the end of the pipe.  The triangle flange slides up the pipe and seals via the flare.  I went to a muffler shop and they said they could do the bends needed to manufacture the pipe, but they could not do the flare.  Cheers!

[Jolly_John]

Try to find a muffler/exhaust shop that's been in business forever. This type of flair was very common on GM cars in the 1960's and earlier. There is a muffler shop in our area (central Wisconsin) that can do this flair. So, there have to be others out there. John

Edited December 28, 2023 by Jolly_John (see edit history)

[dalef62]

What size is the pipe?  If 2" OD I have the flairing tool.  Like Jolly John said, very popular on GM cars.  

[1wonton]

You could probably turn an outside sleeve and tack it on where you need it.

[Gary_Ash]

It looks more like a bead has been rolled in the end of the tube.  The bead just needs to be made deep enough that the flange catches solidly. Now to find a bead roller…

[TTR]

What is the O.D. of the pipe or, conversely, the I.D. of the triangular flange ?

And what does the flange side of the exhaust manifold looks like ?

[DFeeney]

New knowledge is going to be learned from this post.  My head is starting to crack.. 

[TTR]

P.S. The bead on the pipe may not be original and even if it is, not necessarily needed.

Edited December 30, 2023 by TTR (see edit history)