Straightening exhaust Pipe

[bobpo1]

Re: Straightening exhause oioe

Bob,

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[CarlG]

I couldn't get mine to seal right, so I took my exhaust manifold and pipe/muffler to a muffler shop to have them enlarge the flange. He said that the pipe material was too hard/brittle after so many heat cycles. So, he made a new flange. After I fit checked it to my vehicle, he welded it in place.

 

[Synchro909]

Re: Straightening exhause oioe

I took mine to Midas Muffler, he heated it with a torch and with a long pipe, bent it to my spec. Didn't charge me a cent.

Midas here have a reputation for asking for your first born for anything

 

[Tom Wesenberg]

In the 70's I had an 8 AM appointment to have Midas install a tailpipe on my Studebaker. No one sold the pipe, so I had to go to Midas. I didn't get in until noon, so I watched them work. There main tools were a rosebud torch and big hammer. They heated and pounded things into place because they didn't bend the pipes quite right. After I left Midas at 1 PM I was on my way out of state. The tailpipe fell off within 20 miles of leaving Midas. I would never go back to those Bozos.

After seeing their exhaust work, can you imagine having them do your brakes.

 

[Roger V]

Re: Straightening exhause oioe

Midas here have a reputation for asking for your first born for anything

My local muffler emporium re-flanged for free. I think they got a kick out of doing something different plus it didn't take much time. Now that I think about it they're less than two blocks from Midas which I didn't think to stop at!

 

[Mitch//pa]

Re: Straightening exhaust Pipes

FWIW:

A few years ago Chris Pelikan, the carb rebuilder guy, did a series of experiments on the causes of "vapor lock" and excessive heat under the hood using several cars and an infrared digital thermometer.

Vapor lock is also a condition where gasoline boils and creates vapor in the sediment bowl and the fuel line and so liquid gas can not get to the fuel bowl ... (if you do not believe in vapor lock)

1. One thing that he looked at was the use of the "inserts" in the manifold/ exhaust pipe junction.

He found VERY high manifold/pipe temperatures in the area on each side of the insert.

His conclusion was that the use of the insert created a restriction in the flow which raised the temperature excessively and reduced engine power.

2. He also found that old "$50 mufflers" with the NON Mandrel bends (where the diameter of the pipe is reduced in the bending process) had the same effect as using the insert.

The folks at Aires muffler found the same problem with the "non mandrel bends" in the cheap mufflers.

poor and misleading info