Burn mark on Exhaust from Cat.

I'm sure we've all got one, if you haven't it will eventually happen. The cat on the bandit gets so hot that it leaves a 1-2 inch burn mark ring around the exhaust. It's really in my opinion a discolouring of the stainless because of the extremes in temp from the cat converter.

Does everyone have this problem, as I have noticed it on quite a few bandit 1250's. I tried putting a warranty claim in, Suzuki advised they did honour a few however they stopped because they advised they have no fix for it other that a new headers and cat (all one piece), they said it's just a cosmetic thing and it does not effect the performance of the bike.

I'm not fazed it's there, just aesthetically annoyed.

Your thoughts ?

Mine was one of "the few" they did. Second one went longer before burning. I think they stopped replacement because they would have to replace every one! Its poor form from Suzuki to make a feature of the exhaust then ignore an obvious design flaw. I think you may still be able to do some arm twisting if you have a good dealer but the replacement will burn eventually.

I fixed the problem before i had it!

Try sanding wet with 800g then 1200g w/d paper then a metal polish.If it looks like its working you can play around with different grades.Sounds too easy, maybe the marks on mine where not as bad.

mines got the mark but not overly bad compared to others i've seen

not fazed by it, i just don't look at it any more

I'm curious, someone (Reado I think) posted how the middle accidental fell out of his cat' , does this cure the burn mark, as it should no longer get hot there?

i got mine a while back.
i kept polishing it off everytime it came back.
but after about 20 times, i just gave up on it. as long as my headers are nice and shiny, im happy.

Cameron's right, it does come back, you have to like polishing. It does come off though i just did mine,started with 800grit

gus wrote:Cameron's right, it does come back, you have to like polishing. It does come off though i just did mine,started with 120grit

I hope you mean 1200 grit not 120!

I'm curious about how the cat ran away from the exhaust because it was too hot. If it does the bolt, followed by some 1200 grit my pipe will look like new.

Is it really as simple as hitting on the head with a knockerama to make it run away.

Would fitting a PAIRS removal kit help with this?

(surely having no after-fire in the exhaust would lower exhaust temps)

simple wrote:I'm curious about how the cat ran away from the exhaust because it was too hot. If it does the bolt, followed by some 1200 grit my pipe will look like new.

Is it really as simple as hitting on the head with a knockerama to make it run away.

I'm catless. was starting to get the burn look, so fixed the problem .
about 4-5hours with a hammer, long screwdriver and small jimmy bar.
its long 4-5hours working through the back of the header.
The cat is made from steel.
shit late 4 for work. see ya

Reardo wrote:

simple wrote:I'm curious about how the cat ran away from the exhaust because it was too hot. If it does the bolt, followed by some 1200 grit my pipe will look like new.

Is it really as simple as hitting on the head with a knockerama to make it run away.

I'm catless. was starting to get the burn look, so fixed the problem .
about 4-5hours with a hammer, long screwdriver and small jimmy bar.
its long 4-5hours working through the back of the header.
The cat is made from steel.
shit late 4 for work. see ya

yeah, hope you didn't get caught up in the peak hour traffic!

Re-Cycled wrote:

Reardo wrote:

simple wrote:I'm curious about how the cat ran away from the exhaust because it was too hot. If it does the bolt, followed by some 1200 grit my pipe will look like new.

Is it really as simple as hitting on the head with a knockerama to make it run away.

I'm catless. was starting to get the burn look, so fixed the problem .
about 4-5hours with a hammer, long screwdriver and small jimmy bar.
its long 4-5hours working through the back of the header.
The cat is made from steel.
shit late 4 for work. see ya

yeah, hope you didn't get caught up in the peak hour traffic!

Wasn't late. made it across town in 4mins

Wot about an update on that stain.Get rid of it,kept coming back, ignored it.?

I just ignore it. Although I still haven't washed my bike yet Bad boy!

Just ignoring the stain one of those couldn't be bothered things. It's a bit like polished rims, sure they look nice I polished mine about 18 months ago, now I want to respray them nice Matt silver colour as I couldn't be bothered polishing them, don't like colored black wheels

Has anyone considered ceramic coating their headers and cat? It sounds expensive to me but apparently can be done in many different colors and has the benefit of reducing heat considerably.
http://www.jet-hot.com.au/
http://www.cicceramic.com.au/coatings/exhaust-manifold-coatings
It may be a way of fixing the stain issue.

Just did a search and found a guy with a CBR600 who double ceramic coated his whole exhaust system for $330. I don't think I want this kind of expense but it could be a great way to personalize your bike - imagine all black exhaust with a carbon slip on. It sounds like cost is around the mid three hundreds probably would depend on whether it is dual single four or two cylinder etc.

I like the straw colour the system turns between scrubs with Autosol.
Only clean it to get the baked on dirt, bugs, children and small dogs off.

Agreed. I just thought I would put the idea out there for those who might be interested in this as an option -they have coatings that also keep the chrome look.