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Old April 23rd, 2021, 12:25 AM   #1
Norway
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Name: S n 0 r r £
Location: Stjoerdal, Norway (San Diego, CA, USA, 2015-2016 , Bielefeld, Nordrhein Westfalen,Germany 2021-'22)
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Motorcycle(s): TMZ 5.952 "Tula" 200, Ninja 250 -Special ed. '11, ZZR 1400 (ZX14), Honda CB 1100 F Super Bol D'or

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Suspect that the sound from the exhaust is louder after 9 years / 60 kkm

I took out my 250 R, bought new in February '12, a couple of days ago.
As usual, the engine is weak, probably since the fuel has detoriated during winter storage. This usually gets much better after a tank or two..

Anyway - I might be wrong, but I believe that it's a deeper tone and stronger
sound from the original exhaust, than it was earlier.

The bike has mostly been used for my commute, about 80 km / 55 miles per day, in a coastal climate in Norway (not far from Trondheim, for those who
might have heard about the place). It has just above 60 000 km (~37 k miles).

Is it likely that the change in the sound that I believe that I'm hearing, is
due to the exhaust corroding from the inside? (I don't know how long the
original exhaust could be expected to last. Apart from rare exceptions when taking it to Sweden, I'm running the (FI) bike on 98 octane gasoline.)
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Old April 26th, 2021, 09:25 PM   #2
Tefal
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If its anything like my exhaust from commuting in winter it's likely full of holes or the cat (it's the little buldge in the header) has just degraded and effectively blown out so you've got more of a straight through pipe now
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Old April 27th, 2021, 12:03 AM   #3
Norway
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Name: S n 0 r r £
Location: Stjoerdal, Norway (San Diego, CA, USA, 2015-2016 , Bielefeld, Nordrhein Westfalen,Germany 2021-'22)
Join Date: Sep 2012

Motorcycle(s): TMZ 5.952 "Tula" 200, Ninja 250 -Special ed. '11, ZZR 1400 (ZX14), Honda CB 1100 F Super Bol D'or

Posts: 141
Quote:
Originally Posted by Tefal View Post
If its anything like my exhaust from commuting in winter it's likely full of holes or the cat (it's the little buldge in the header) has just degraded and effectively blown out so you've got more of a straight through pipe now
Thanks for your reply.
There are no rust holes to be seen, but it might be that some of the
internal parts are destroyed, similar to what you suggest.
The 250 has been used when temperatures have been above 2 degrees C, or when it's likely not to be ice on the road. Still, that includes driving in rainy conditions and having the bike exposed to road salt.
(I used a Honda CB 125 F with 160 metal studs per tire (Heidenau K41s) , from october and until now. Down to about 10 degrees C (14 degr. F) it was ok. -23 degrees C (-9.4 degrees F) was definately too cold, at least with my equipment.)
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Old April 27th, 2021, 05:04 AM   #4
Tefal
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Ask em to do an emissions test at your next MoT/equivalent in the UK they don't test bikes for this only cars. But would let you know if your cats gone.
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Old May 10th, 2021, 11:34 PM   #5
Norway
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Name: S n 0 r r £
Location: Stjoerdal, Norway (San Diego, CA, USA, 2015-2016 , Bielefeld, Nordrhein Westfalen,Germany 2021-'22)
Join Date: Sep 2012

Motorcycle(s): TMZ 5.952 "Tula" 200, Ninja 250 -Special ed. '11, ZZR 1400 (ZX14), Honda CB 1100 F Super Bol D'or

Posts: 141
Quote:
Originally Posted by Tefal View Post
Ask em to do an emissions test at your next MoT/equivalent in the UK they don't test bikes for this only cars. But would let you know if your cats gone.
There are no MOT or equivalent for motorcycles here, like we have for cars.
I might check next time I'm delivering the bike to have it serviced.
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