64 Galaxie Muffler explosion

[callbald]

Take a look at this one. Car was running great and starting off from a traffic light the engine stumbled, I naturally hit the gas and BAM!! the passenger side muffler blew apart at the front top seam. I just had the welded dual exhaust system installed this summer. It was the loudest noise I've heard and amazed the blast didn't cause someone to have an accident.

 

[5851a]

Same thing happened to me. Was aftermarket electronic ignition failing. I swear car raised up a foot. 1st instinct is always pump the gas and loads up the muffler.

 

[mercman from oz]

No wonder you got a shock? That is incredible damage.

 

[rotorwrench]

Gasoline can be pretty destructive if the fuel air mix is just right. A bad exhaust valve can also cause an after fire. It's usually an intermittent ignition problem though. You can get a lot of cars to after fire by turning the ignition switch off and back on quickly. The unburned fuel/air mix has no where else to go.

 

[58Yeoman]

We used to do that on purpose in high school. There was a long hill that was over a 1/4 mile long that we would shut off the ignition and coast for a while, then turn on the key. It usually blew out the insides, but not the case. I guess mufflers were built better back then?