Necessity of Repacking Carbon Fiber Cans. - Suzuki GSX-R Motorcycle Forums Gixxer.com
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post #1 of 31 (permalink) Old 11-28-2012, 09:10 PM Thread Starter
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Necessity of Repacking Carbon Fiber Cans.

I just got a Carbon Fiber TRC for my K5 1000 and like a sucker, I always read through the owner manual. Is it really necessary to repack these carbon exhausts? I've had plenty of aftermarket aluminum ones and those are damn near indestructible from the inside but I'm not too sure about these CF ones.

The manual says that it'll need a repack every 5k... I'm definitely too lazy for that. Tell me your opinion and let me know how long you've gone without repacking yours.



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post #2 of 31 (permalink) Old 11-28-2012, 09:15 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

You won't have to repack it nearly that often. They do that to cover their butt is all. Most every manufacturer does. The main thing that will kill the cf is if you park it outside in the hot sun 24/7 like in Arizona. If you do then you need to keep a wax on it that fights off the UV rays.
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post #3 of 31 (permalink) Old 11-28-2012, 10:00 PM Thread Starter
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Re: Necessity of Repacking Carbon Fiber Cans.

So is it good to wax it anyways? I wash/wax my bike pretty often prior to going to Starbucks to park it there for hours...
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post #4 of 31 (permalink) Old 11-28-2012, 10:59 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

Yes, you should keep a good coat of wax on it. I recommend contacting the manufacturer to see what type they recommend or what type to stay away from.
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post #5 of 31 (permalink) Old 11-28-2012, 11:10 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

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Yes, you should keep a good coat of wax on it. I recommend contacting the manufacturer to see what type they recommend or what type to stay away from.
I have the Tri-oval Yoshimura Japan, bought from you. What might you recommend to protect it?

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post #6 of 31 (permalink) Old 11-29-2012, 02:15 AM
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Re: Necessity of Repacking Carbon Fiber Cans.

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In my pants...everywhere...
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post #7 of 31 (permalink) Old 11-29-2012, 02:27 AM
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Re: Necessity of Repacking Carbon Fiber Cans.

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In my pants...everywhere...
And after a few minutes, it grew in length and got as hard as titanium.....
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post #8 of 31 (permalink) Old 11-29-2012, 02:05 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

So would you guys reccomend I repack mine? 12500 miles on the can garage kept but the bike is kept in Florida. Would that cause for re-packing?

J
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post #9 of 31 (permalink) Old 11-29-2012, 02:30 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

All right Cory you let the genie out of the bottle . What wax do you recommend for protecting Carbon Fiber and do you sell it? If not why not ? Time to corner the market bud.
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post #10 of 31 (permalink) Old 11-29-2012, 03:00 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

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I have the Tri-oval Yoshimura Japan, bought from you. What might you recommend to protect it?

A large condom?
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post #11 of 31 (permalink) Old 11-29-2012, 04:27 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

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A large condom?


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post #12 of 31 (permalink) Old 11-29-2012, 06:16 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

The manufacturer says to repack it or else the packing breaks down and it will overheat the cf and break it down. I have almost 30,000 on stock packing and no ill effects on my pipe. The last time I had it apart the packing was still 50% whiteish so i put it back in.
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post #13 of 31 (permalink) Old 11-29-2012, 06:31 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

I repack my Leo every oil change, but I'm just cool that way. I'm afraid the packing might get dirty. I protect the can with special "Mummy Juice" that Corey gave me on a camping trip.
I'm not sure if he sells the stuff, it's kind of sticky, smells like broccoli, but seems to protect the CF on the can pretty well so far. It was free, so I'm using it.
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post #14 of 31 (permalink) Old 11-29-2012, 06:40 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

Does it come in any other smells like pineapple or ooooooh, strawberry?

Back on topic, looks like I am coming up on a repack. Yoshi makes it much more difficult than my old Vance and Hines by using rivets.

Last edited by Samantha750; 11-29-2012 at 06:42 PM.
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post #15 of 31 (permalink) Old 11-29-2012, 06:58 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

I have a CF TRC slip on on a k9 GSXR600 and emailed Yoshimura about the breaking in process of the exhaust and they brought up a little bit of how the packing wears out.

Yoshimura
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It typically only takes one good ride to burn off any oils left over from the manufacturing process, and that is the only necessary "break-in" process for our exhaust systems.

Over time, the exhaust packing will wear down, and the sound of the muffler will change as well. This change is dependent on too many variables to accurately predict when it will happen.

As our exhaust systems packing degrades, they initially "open up" meaning volume increases slightly, and the tone changes slightly. Slightly degraded packing is not a terrible thing, but keep an eye on the muffler for any hot spots on the sleeve, which will be discolored compared to the rest of the sleeve, and also listen for the exhaust starting to sound "tinny", which means the packing is quite worn out.
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post #16 of 31 (permalink) Old 11-29-2012, 07:44 PM
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It is far more important with a cf exhaust than an aluminum/stainless/ti.

They can and have burned through and caught fire when not.maintained properly. It is all dependent on how well the bike is tuned too. A bike that flames a lot and after fires a lot will wear out packing a lot faster.

Outside of the safety issue, the packing is also an important part of the canister and how well it makes power. Properly maintained it will make more power and of course sound better.

And ... after all...most street bikes get exhaust for the sound. Why let it degrade?


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post #17 of 31 (permalink) Old 11-30-2012, 02:25 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

how do you repack a cf exhaust? what do you need?
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post #18 of 31 (permalink) Old 11-30-2012, 02:30 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

Drill bits, rivet handle, packing, safety wire, and tools to remove it from the bike.

Remove canister. DRill out rivets. Disassemble canister carefully. Remove old pakcing from the core. Wrap new packing around core and secure with safety wire. Stuff core back inside sleeve and rivet it back together. Re-install on the bike.
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post #19 of 31 (permalink) Old 11-30-2012, 02:54 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

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how do you repack a cf exhaust? what do you need?
https://www.youtube.com/watch?featur...&v=DPalKe6nYIk
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post #20 of 31 (permalink) Old 11-30-2012, 03:06 PM
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Re: Necessity of Repacking Carbon Fiber Cans.

the above "how to" video uses loose packing.

For matt packing which some suppliers have, you would wrap the packing around the core, and wire tie it on loosely. Hard part is knowing how much to put in to fill the cannister.
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