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General Category >> Rubber Side Down! >> catalytic heat
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Message started by Hiko on 11/07/19 at 14:07:37

Title: catalytic heat
Post by Hiko on 11/07/19 at 14:07:37

My catalytic Dyna muffler has developed a bright blue band around it where the catalyst is placed in the last 1000kms
The bike has been rejetted to 150 main and runs the original 52.5 pilot jet the spacer has been reduced to about 3/4
It runs well no backfiring and has had this muffler and rejetting fitted 5000 kms ago
I am at close to sea level
Is this normal? Cannot upload photo for some reason

Title: Re: catalytic heat
Post by Dave on 11/07/19 at 14:12:10

Yep....normal.

The catalyst traps some heat, and it makes the chrome blue.

Don't worry about it.

Title: Re: catalytic heat
Post by Fabricio Bino on 12/28/19 at 05:48:25

Mine gets so hot that it can be seen at night glowing orange.

But it's inside de exhaust, the chrome outside is perfectly fine

Title: Re: catalytic heat
Post by Hiko on 12/29/19 at 00:41:16

My Dyna muffler has a bright blue ring around it where the catalyst is