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Stainless Exhaust Cracked Open


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#1 ironcub OFFLINE  

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Posted May 15, 2014 - 12:27 AM

I put a stainless steel exhaust piece from a motorcycle on my 1650 cub cadet early spring of 2013 and all was well and doing fine until the other day well over a year later the exhaust cracked open. Engine is totally fine , but the stainless steel exhaust isn't. Do any of you guys have any idea what might have caused it?

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Edited by ironcub, May 15, 2014 - 12:31 AM.

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#2 petrj6 ONLINE  

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Posted May 15, 2014 - 04:49 AM

   Stress crack!!!  Stainless is very funny about heating and cooling in an exhaust situation.  As it heats and cools it becomes work hardened and very hard, with the hardness it also gets very brittle.  as you run it it wiggles and vibrates then after some time       Bang!!!!!!!!!! there you go.  That is the reason why most bikes and cars have lots of hangers in the exhaust system especially out on the end where it will move allot.

    The only way to avoid this would be to add a brace to keep the wiggling down

                                                                                                                             Pete


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#3 crittersf1 OFFLINE  

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Posted May 15, 2014 - 05:22 AM

:iagree: :iagree: :iagree:



#4 JDBrian OFFLINE  

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Posted May 15, 2014 - 05:29 AM

Vibration. When you take that engineered pipe out of it's intended application and use it where it is subjected to different stresses it will break. A motorcycle exhaust is designed to be as light as possible and still get the job done so it doesn't have much tolerance for increased vibration or different support arrangements.


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#5 sodisr OFFLINE  

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Posted May 15, 2014 - 08:21 AM

petri and JD have nailed it...I would like to add that motor cycle muffs.  are made with fairly thin metal .. and YES  Brackets



#6 HDWildBill OFFLINE  

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Posted May 15, 2014 - 09:26 AM

I think everyone has pretty well explained it.  A bikes exhaust is not made to be mounted like that with the weight pushing down and the vibrations. 



#7 BillTheTractorMan OFFLINE  

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Posted May 15, 2014 - 12:40 PM

Here is a write up I did back along time ago as a teenager. I should add to it and update it when I get time. For what ever it's worth it may help you.


I've posted it a few places and it always seems to be lost, so I put it up on my own website where I know for sure it won't be lost.

Here's a link.
http://www.mysearstr....php?topic=56.0


sent from my telecomunication device, from the seat of my imaginary tractor, working my imaginary feilds.
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