Busted Exhaust.

[unbusted67]

i just found this nasty crack in my exhaust. I am at a yard now getting it looked at and we are discussing options. I am wondering about the possibility of patching it since it seems to be part of a larger custom built pipe that will be difficult to replicate. Will polyester resin and glass hold up to that type of heat?


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[Terra Nova]

Can't you tell when something is used up, is beyond repair and needs replacing?

[a64pilot]

Originally Posted by unbusted67

Attachment 90634Attachment 90635 Will polyester resin and glass hold up to that type of heat?


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No, but there is a "muffler patch" stuff that is like a cast in that it's like a roll of plaster of paris that will hold up for a temporary repair, if you can get it off though it doesn't look like a tough job to weld.

Mind you I'm not suggesting you do the muffler patch, but it's a better plan than fiberglass

[Romsdal63]

Not for very long. It appears to be a standard 90 bend probably schedule 40 pipe. There should be plenty of welders around that can put that together pretty quickly.

[colemj]

It doesn't look too custom built - just a basic straight riser, maybe a U on the top and a water injection port on the downside? Is this an older Universal engine? If so, they use common pipe thread for their exhaust elbow. You can make a new elbow/injection using common inexpensive hardware store black pipe. Galvanized if you absolutely have to. Just match up lengths, bends and T's to your current one. Any good hardware store can cut threads in pipe for you for little cost.

Mark

[unbusted67]

The mechanic seems to think he can weld it.


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[model 10]

That is not a very good looking crack, as cracks go. I even think welding is going to be a short term fix. Looks like welding on a new section would be pretty inexpensive and very rewarding.

[Terra Nova]

Originally Posted by unbusted67

The mechanic seems to think he can weld it...

Sure he does. But anyone with any experience can tell you'll be throwing your money away.

[unbusted67]

What makes you say that?


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[unbusted67]

What would you do Terra Nova? I'm Not looking for short cuts here I just don't know a lot about it. Honestly it's a little stressful and you are kind of being a bit blunt. So if you want to help help but let's keep the doomsday prophecies to a minimum.


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[a64pilot]

If he welds it in place I'd disconnect the alternator and battery and ground wire from the engine.

[unbusted67]

Haha yep it's off the boat


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[leftbrainstuff]

If the exhaust is having to support its own weight or is being fed a structural or thermally induced load it makes sense to deal with this at the same time. Your patch job might last longer too.

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[unbusted67]

I am wondering what made it crack in the first place. It's not like the metal is that corroded. I took the engine in originally for an alignment. And I'm wondering if the extra vibrations cracked the exhaust. It doesn't support itself. It has a hefty metal tang supporting it but I wonder if it needs more.


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[unbusted67]

Originally Posted by colemj

It doesn't look too custom built - just a basic straight riser, maybe a U on the top and a water injection port on the downside? Is this an older Universal engine? If so, they use common pipe thread for their exhaust elbow. You can make a new elbow/injection using common inexpensive hardware store black pipe. Galvanized if you absolutely have to. Just match up lengths, bends and T's to your current one. Any good hardware store can cut threads in pipe for you for little cost.

Mark

Yes it is a universal. And what you described is what we have.


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