08 1000rr cat location and or removal

Does anyone know where the converter is located and or how to remove it?

It's inside the muffler. Get a slip-on.

I thought it was in the muffler but when I saw a diagram it was not listed in their. The slip on is not a bad idea exept they are not proving to give much hp improvement. I ran some 111 gas in mine and think I might have gotten the cat to hot and stopped it up somewhat.

i too think it's in the muffler.

It is in the muffler, and if that 111 gas was leaded, the cat is done for and you will have to replace the muffler one way or another.

If you have nothing to lose, cut it open and see if you can remove it.

cutting it open is what i was thinking but i would like to find a diagram that will help me to cut it open in the right place. If anyone no's where to find a diagram it would be helpful, no need in cutting where its not needed. Ill find out if it was leaded I got it from my dads drag strip. Thanks for all the help.

Honda is not going to provide one as it is a sealed system and has no parts in it that can be replaced. I will probably cut into mine and remove the flapper.

http://www.desertwestmotorsports.com/images/08_cbr1000rr_exh1.gif

thanks cbrcolin! I got my muffler off now I can do some cutting.

I find this interesting. If you can, please post pix after cutting. Thanks, JJ

This could get interesting....

I'm curious as to what effect removing that valve will have on low end power :popcorn2::popcorn2::popcorn2:

I'm curious as to what effect removing that valve will have on low end power :popcorn2::popcorn2::popcorn2: According to some that have, nothing. I was just going to remove it and put a bolt in the threaded hole. It is there for EPA reasons, not emissions but sound. It opend at 6,000 or around 500 RPM higher than what the EPA tests the sound level for.

I'm curious as to what effect removing that valve will have on low end power :popcorn2::popcorn2::popcorn2: Which valve?

http://www.desertwestmotorsports.com/images/08_cbr1000rr_exh1.gif I ment removing the EGBV valve

I'm looking for a donor exhaust to cut open. I have acess to a fab shop and a tig welder with a pipe bender. I'm thinking that no pipes are going to produce more than the stock setup. But maybe it can be lighter. Any takers ? I'll pay for shipping. Mike

Has there been any dyno testing with the flap removed, yet?

I have finished the job. No pics dont be mad my brother has already got on me. I cut the 90 degree off where it goes into the muffler their is also two flat reenforcing plates you have to cut. when you get that off the cat is staring you in the face I took and drilled 6 holes 1/2 inch and then a flat screwdriver and hammer and cut the rest of the cat out. The hardest part was using a hacksaw to cut the pipe off and welding the thin steel back together. I used a stick welder and with the tight space between the inside of the pipe and muffler I think that is the only kind of welder you can use. I have repainted the whole muffler with header paint it was needeing it anyway my pipe was showing heat spots on the outside.

I have finished the job. No pics dont be mad my brother has already got on me. I cut the 90 degree off where it goes into the muffler their is also two flat reenforcing plates you have to cut. when you get that off the cat is staring you in the face I took and drilled 6 holes 1/2 inch and then a flat screwdriver and hammer and cut the rest of the cat out. The hardest part was using a hacksaw to cut the pipe off and welding the thin steel back together. I used a stick welder and with the tight space between the inside of the pipe and muffler I think that is the only kind of welder you can use. I have repainted the whole muffler with header paint it was needeing it anyway my pipe was showing heat spots on the outside. so how does it sound ? any raspiness ? any gain or loss anywhere in the rev range ?

I have finished the job. No pics dont be mad my brother has already got on me. I cut the 90 degree off where it goes into the muffler their is also two flat reenforcing plates you have to cut. when you get that off the cat is staring you in the face I took and drilled 6 holes 1/2 inch and then a flat screwdriver and hammer and cut the rest of the cat out. The hardest part was using a hacksaw to cut the pipe off and welding the thin steel back together. I used a stick welder and with the tight space between the inside of the pipe and muffler I think that is the only kind of welder you can use. I have repainted the whole muffler with header paint it was needeing it anyway my pipe was showing heat spots on the outside. Good work. When you get better at this mabe we can send our exhaust and pay you for this mod. bp

I can tell that it breaths better as for the sound not to much louder. The only reason I did this is that I was told that running 111 octane leaded gas had destroyed my cat. Im not sure that it did the surface of the cat looked fine, because I drilled into it and had to chisel it out I pretty much crushed everything so im not sure that I had messed it up but I can tell by the pressure comming out of the exhaust that it is breathing better. It acts like it revs a little faster bellow 5000 in first gear. Thanks but no thanks I would rather not do another I had a few pinholes that I found by turning that lights out and shining the outside of the weld with a flashlight and looking into the pipe.

Was it not possible to cut the pipe off that holds the cat as in the diagram.

Was it not possible to cut the pipe off that holds the cat as in the diagram. no. the pipe is welded to the muffler and you have to cut the pipe off the muffler. The cat is inside the muffler.

Does it look like you can just cut an access hole on the inner side of the exhaust and just completely remove the whole cat canister? Kind of like when they cut a hole in the side of a big ass ship to swap out engines or generators? I might try this coming weekend. Just from looking at the pics, I think I could completely remove the whole canister and make whatever changes on the inside. I might even go into the muffler section and see what's all in there to determine if some packing might be able to be added or removed to change the sound. If it becomes easy enough I would be able to repeat it again for others. I'm a TIG welder and could even make it look like it was never cut open when I'm done. Is the exhaust piping and housing made of stainless? I'm inside now and haven't looked too closely.

It is not made from stainless.

i might try to find something somewhat flexible to get in there and break down the catalyst instead of dissecting the entire thing. it should all break apart and fall back out the tubing rather easy if it's anything like what i've dealt with on cars

i might try to find something somewhat flexible to get in there and break down the catalyst instead of dissecting the entire thing. it should all break apart and fall back out the tubing rather easy if it's anything like what i've dealt with on cars From the motorcycle cats I've gutted, and also pre-cats on cars, I'm sure this one isn't that easy. I'm assuming it's not made of ceramic. The main cats on cars are usually ceramic, but the smaller cylindrical ones are usually grated metal tightly wound around itself. It's a pain in the ass. I'm just going to cut the whole thing open and cut the cat off from the inside. I should have said "steel" instead of stainless. Low carbon steel is actually easier to weld than stainless which now that I think of it, is probably what it is. I just wanted to make sure it wasn't titanium, but if it were, it probably wouldn't have a coating on it like this exhaust does. I don't have access to titanium filler metal right now.

I just got the exhaust off my bike and brought it to work. It was kind of a pain in the ass to get off. I started stripping heads off of bolts because they aren't very deep and they didn't like my T-handle allen wrenches with rounded tips. Well, I'm about to get it x-rayed, and hopefully I'll be able to see enough to find good places to cut. There are all kinds of tack welds all over this thing so I don't know what internal parts are tack welded to the housing just yet. These x-rays are costing me half of my turkey sammich so they better be worth it! I'll try to post them up just for shits and giggles for you guys. Should be about 8:30 eastern time when I get them posted. I'm borrowing a camera from my girl for the weekend so I can get some good pics while I cut it open and do the work. I'm going to try to pick up some exhaust packing tomorrow morning and see what I can get into to make it more free flowing and still sound good. Hopefully her camera records good audio.

sweet! I'm looking forward to seeing where this goes!

Alright, the x-ray didn't show too much more than what the diagram did, but I can see the entire surface of the interior is lined with baffling. I'm going to remove the entire cat canister. That's a given. As far as opening it up more, I am thinking about cutting off the larger pipe in the center, and sealing up the forward bulkhead so the exhaust goes directly out the rear bulkhead. I don't really see it making it any better flowing though, because the only way I can describe this thing is an "exhaust box". The best thing to do would be to weld a pipe from the inlet directly to the rear bulkhead, and have that pipe baffled with the packing material around it, but I don't have free access to pipe or any pipe benders, and I would have to open up both sides of the exhaust to be able to weld all the way around the pipe. I'm just a welder/fabricator, so if anyone else with any knowledge on flow properties or baffling wants to give me their two cents. that would be great. I had to reduce the size, so some of the clarity is gone. I had the diameters of the pipes marked, but they may be unreadable in the reduced size. I have the HiRes ones if anyone is interested. http://i183.photobucket.com/albums/x140/bfa04r1/exhaust.jpg http://i183.photobucket.com/albums/x140/bfa04r1/exhaust1.jpg http://i183.photobucket.com/albums/x140/bfa04r1/exhaust2.jpg

So basically right now, the exhaust comes in from the cat, bends back around to go through the smaller pipe through the forward bulkhead, back around out the larger pipe through the center section and out through the rear bulkhead, and then into the rear chamber, where it needs to find its way into the two pipes leading out of the muffler. It's just a pressurized system with not really any natural flow for the exhaust.

Just in case nobody caught my other thread, here is the link to what I did: http://www.1000rr.net/forums/showthread.php?t=48666

Omg I never seen a Xray of a pipe before!!!

Omg I never seen a Xray of a pipe before!!! oh come one, everyone has an xray of their pipe, don't they? here's my animated one: http://animations.3d4medical.com/Reproductive-Erection-X-Ray-1-animation_AN1057.html

i think some of you need to be working @ Honda itself