pipe carbon build-up

[2stroke_addict]

i got a pair of toomey 6 pipes that i'd like to remove the carbon build-up on the inside, however i can't and i won't open them up, my question is this: is there anyway to remove it without splitting them open???

[Holyman]

Go to the local dollar store and buy two cans of oven cleaner. Preferrably the kind that requires the oven to be hot. The pipes do not need to be hot, that formula just seems to work better. Spray about 1/3 of a can in each pipe and slosh it around in there until you think everything is coated. Let it sit for about 15-20 minutes and then hose it out. Repeat if you feel it's needed. I've used this stuff to clean the worst baked on crap from the insides of silencers and it works great and it's dirt cheap. Even works great on de-greasing parts but it WILL STRIP PAINT if the paint is not powder coated or factory yamaha paint. So be careful. You may want to make sure there is a breeze outside when you do it and DO NOT breathe the fumes or get it on your skin. IT BURNS.

[itsmyforte]

btw, people use this to remove clear coats on street bike frames then polish them. this stuff is VERY aggressive and VERY strong. like holyman said, DON'T breath it in or get on your skin.

[2stroke_addict]

thanks guys i'll give it a try.

[AZ DESERT RACER]

Never heard about the oven degrreaser idea, sounds like a good one. I had some bad rust and carbon build up and I just put some gravel of different sizes in the pipes and shook the hell out of them. I don't know if it got all the gunk out, but there was a big pile of crap when I emptied the rocks out.