Unofficial Royal Enfield Community Forum

Royal Enfield Motorcycles => Bullet with the UCE engine => Topic started by: itsmemadhans on March 17, 2014, 10:06:37 am

Title: cracking of bent pipe
Post by: itsmemadhans 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..

Title: Re: cracking of bent pipe
Post by: barenekd 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.
Bare

Title: Re: cracking of bent pipe
Post by: suitcasejefferson on March 18, 2014, 01:42:41 am

Is this a carbed bike or EFI?

Title: Re: cracking of bent pipe
Post by: itsmemadhans on March 18, 2014, 06:53:35 am

its carbed bike...
when i checked my spark plug its in white color and clean...

Title: Re: cracking of bent pipe
Post by: JVS on March 18, 2014, 10:51:48 am

Quote from: itsmemadhans on March 18, 2014, 06:53:35 am

its carbed bike...
when i checked my spark plug its in white color and clean...

 :o

Your bike is running lean!

Title: Re: cracking of bent pipe
Post by: suitcasejefferson on March 18, 2014, 11:03:54 am

Yes, your plug should should be a medium tan color.

Title: Re: cracking of bent pipe
Post by: no bs on March 20, 2014, 12:30:33 am

imagine what the exhaust valve looks like!