RC51(SP2) exhaust problem - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 22 (permalink) Old 12-21-2011, 09:48 PM Thread Starter
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RC51(SP2) exhaust problem

My name is Ken, just the owner of RC51 in China.
I just buy SP2 HRC some days ago, everything is smooth except the different tempreture of exhaust pipe.

The tempreture of right pipe is higher than left, but their air displacement and exhause pressture seems same.

Is the problem of tempreture common, if not, how to solve?

Please check the photo
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Last edited by kenhe; 12-21-2011 at 11:57 PM.
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post #2 of 22 (permalink) Old 12-21-2011, 10:09 PM
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This is normal on these bikes.
The exhaust flow on the right pipe is straighter than the left, which goes through more bends.
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post #3 of 22 (permalink) Old 12-21-2011, 10:35 PM
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Originally Posted by SubSailor View Post
This is normal on these bikes.
The exhaust flow on the right pipe is straighter than the left, which goes through more bends.
yeah but look at the pic, something is not rite? 2 tone Ti can. say that 10 times

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post #4 of 22 (permalink) Old 12-21-2011, 10:36 PM Thread Starter
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yeah but look at the pic, something is not rite?
so what is wrong, I am the newbie.
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post #5 of 22 (permalink) Old 12-21-2011, 11:12 PM
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Sorry, I blew up the photo and noticed these are Akrapovic muffers
Some manufacturers offered muffers with this color pattern, such as Micron, Ladybird, etc., but not Akrapovic to my knowledge.

What does the right muffler look like? Is it similar or not?
Titanium doesn't discolor like this unless it's heated quite a bit.
If the muffler packing has not been replaced in quite some time, the exhaust gasses could be blowing onto the sleeve causing discoloration.
If the right muffler looks normal, then you might need to check and repack the left muffler, or both to be sure.

Last edited by SubSailor; 12-21-2011 at 11:16 PM.
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post #6 of 22 (permalink) Old 12-21-2011, 11:46 PM Thread Starter
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Originally Posted by SubSailor View Post
Sorry, I blew up the photo and noticed these are Akrapovic muffers
Some manufacturers offered muffers with this color pattern, such as Micron, Ladybird, etc., but not Akrapovic to my knowledge.

What does the right muffler look like? Is it similar or not?
Titanium doesn't discolor like this unless it's heated quite a bit.
If the muffler packing has not been replaced in quite some time, the exhaust gasses could be blowing onto the sleeve causing discoloration.
If the right muffler looks normal, then you might need to check and repack the left muffler, or both to be sure.
1,it has the spone muffer in the pipe, I will take the photo to you tonight. beucase I am the newbie in this field, maybe your " muffers " is not the one I mention
2,I have upload more 2 photos for it. I do not know what the right muffler look like, and I do not know whether it is similar or not.
3,I could not confirm it is titanium..
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post #7 of 22 (permalink) Old 12-22-2011, 06:38 PM
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I see some inconsistancies in the photos as well. Honda produced images, double L-plate (one inverted), things that make me go hmmmmm. You got mail sub-man.

Duct tape can't fix stupid...but it sure helps muffle the sound
'03 SP2, '09 GL1800
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post #8 of 22 (permalink) Old 12-22-2011, 07:55 PM
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Yeah, why the funny licence plate thing?

John, 2000 RC51 #000100

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post #9 of 22 (permalink) Old 12-22-2011, 08:27 PM
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I don't know , what is up with the licence plate thing.. But the aerial photos of the bike- and not photos of the exact problem areas, doesn't help with giving a logical diagnoses of your problems...
Is the Akrapovic- a full exhaust system, or just slip-on?
Did you install the exhaust /or did you buy the bike with the exhaust on the bike?
If possible(WHILE the engine is running at normal engine temperatures) - Do you hear clicking in the exhaust? Like an exhaust leak... Where air(oxygen) is getting into the exhaust/other than spent exhaust gases...

Last edited by 1971allchaos; 12-22-2011 at 08:34 PM.
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post #10 of 22 (permalink) Old 12-22-2011, 09:20 PM Thread Starter
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Originally Posted by 1971allchaos View Post
I don't know , what is up with the licence plate thing.. But the aerial photos of the bike- and not photos of the exact problem areas, doesn't help with giving a logical diagnoses of your problems...
Is the Akrapovic- a full exhaust system, or just slip-on?
Did you install the exhaust /or did you buy the bike with the exhaust on the bike?
If possible(WHILE the engine is running at normal engine temperatures) - Do you hear clicking in the exhaust? Like an exhaust leak... Where air(oxygen) is getting into the exhaust/other than spent exhaust gases...

1, the licence plate is just a steel plate, without any uses, maybe Chinese people would know what I mean
2, The Akrapovic is a full Ti can exhaust system, not slip-on
3, I buy the bike with this exhaust
4, The temperature is normal level when the engine running, it is around 88 degree
5, the exhaust seems work well except the different of temperature, without any leakage and clicking sound
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