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Scooters - 125 to 300 => Super 8 150 => Topic started by: Vivo on September 03, 2012, 05:27:54 AM

Title: Roar!
Post by: Vivo on September 03, 2012, 05:27:54 AM

My Super 8 purred at wot when new up to several thousand kilometers, now the engine roars at wot... Does it has something to do with the pipe?

Title: Re: Roar!
Post by: Vivo on September 03, 2012, 07:46:57 AM

No replies.... what I meant is it became louder compared to when it was new....  scoot is one year old... throaty sound....

Title: Re: Roar!
Post by: whiteknight on September 03, 2012, 12:25:01 PM

yea that might be the pipe (its been broken in)  when i had my corolla, the exhaust i had purred for a while the decided to go beserk and start annoying pedestrians and the police. but yea i think the pipe has broken in.

Title: Re: Roar!
Post by: ce on September 03, 2012, 01:58:54 PM

If the header bolts have vibrated loose it may have burned through the exhaust gasket a little to contribute to the noise.

And you may be due for a valve adjustment, if the exhaust valve has closed up tighter than .004 inch it would sound different, and be harder to start when cold.

Title: Re: Roar!
Post by: old geezer on September 03, 2012, 07:49:09 PM

Also a tight exhaust valve will burn over time.