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Author Topic: cracking of bent pipe  (Read 391 times)

itsmemadhans

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cracking of bent pipe
« on: March 17, 2014, 10:06:37 AM »
hi,
i own a thunderbird 2011 uce model 350 cc and yesterday i drove it for 600 km odd with breaks every 1 hour and driving speed was 80 km/hr average in hot climate.
when i reached my home i saw that my exhaust bend pipe from engine developed a crack in the middle some thing like the one in picture(picture taken from google)
my bend pipe looks new but this crack formed recently was like pipe getting too much heat and it got open with cracks like triangle (3 to 4 cuts).

please let me know if there is a problem with over heating or an issue in bike
any  suggestions
NOTE: i am using goldstar glasswool silencer for past 1 year..
« Last Edit: March 17, 2014, 10:33:22 AM by itsmemadhans »

barenekd

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Re: cracking of bent pipe
« Reply #1 on: March 17, 2014, 11:13:11 PM »
It looks like it's running a bit too lean and the combustion flame is going down the pipe. You might want to look at your exhaust valve.
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suitcasejefferson

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Re: cracking of bent pipe
« Reply #2 on: March 18, 2014, 01:42:41 AM »
Is this a carbed bike or EFI?
I am a motorcyclist, NOT a biker.
2013 Royal Enfield B5
2002 Kawasaki Vulcan 750
2001 Yamaha XT225
2012 Yamaha Zuma 125
2009 Genuine Stella 2 stroke
1980 Puch Maxi ZA50 2 speed
1971 VeloSolex S3800

itsmemadhans

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Re: cracking of bent pipe
« Reply #3 on: March 18, 2014, 06:53:35 AM »
its carbed bike...
when i checked my spark plug its in white color and clean...

JVS

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Re: cracking of bent pipe
« Reply #4 on: March 18, 2014, 10:51:48 AM »
its carbed bike...
when i checked my spark plug its in white color and clean...

 :o

Your bike is running lean!
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suitcasejefferson

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Re: cracking of bent pipe
« Reply #5 on: March 18, 2014, 11:03:54 AM »
Yes, your plug should should be a medium tan color.
I am a motorcyclist, NOT a biker.
2013 Royal Enfield B5
2002 Kawasaki Vulcan 750
2001 Yamaha XT225
2012 Yamaha Zuma 125
2009 Genuine Stella 2 stroke
1980 Puch Maxi ZA50 2 speed
1971 VeloSolex S3800

no bs

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Re: cracking of bent pipe
« Reply #6 on: March 20, 2014, 12:30:33 AM »
imagine what the exhaust valve looks like!
killing bugs since 1972 2011 g5 deluxe