Exhaust leak Yoshimura rs5 - 600RR.net
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post #1 of 27 (permalink) Old 05-24-2013, 09:37 AM Thread Starter
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Exhaust leak Yoshimura rs5

Hi,

Just installed my yoshi rs5 on cbr600rr '05 but i am having an exhaust leak at the connection link tail pipe and header.
Exhaust gasket is new.

I checked references twice and they are for my bike.

Here is the pictures of it, it looks like it does not fit properly.

If I move the link pipe lower, it just does not fit anymore to attach it at the chassis at the higher level.

I noticed there are two leaks when engine is cold: water coming out
I have tried moving the clamp up and down and it does not change anything.

Does anybody have an idea?

I have dismantle it few times now and can not make it fit properly
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post #2 of 27 (permalink) Old 05-24-2013, 10:26 AM
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pictures...?

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post #3 of 27 (permalink) Old 05-24-2013, 10:27 AM Thread Starter
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Here is the picture, sorry ;)


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Last edited by sevenup851; 05-24-2013 at 10:30 AM.
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post #4 of 27 (permalink) Old 05-24-2013, 10:42 AM
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alright, just to be clear is this the connection from the midpipe into the cat? Also, is that a hole in your pipe I see?

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post #5 of 27 (permalink) Old 05-24-2013, 10:42 AM Thread Starter
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I have tried now to lower it without attaching it to the chassis, one leak dispappeared but same issue. I might have damage the tail pipe and gasket now by tightening it :(


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post #6 of 27 (permalink) Old 05-24-2013, 10:44 AM Thread Starter
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yes it is the connection midpie to cat. Nope there is no hole, what you see is the gasket being too small fitting in the midpipe, as it was originally.
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post #7 of 27 (permalink) Old 05-24-2013, 10:46 AM
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yeah that bracket in your second pic.. don't even need that.. I tightened mine down on the pipe and just used the strap over the can and bolted to the tail. Never had a problem. If you can do that and not have a leak that might fix your problem

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post #8 of 27 (permalink) Old 05-24-2013, 10:48 AM
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1. might need to track down a new gasket. 2. Did you remove your heat shield? shouldn't matter, it just looks better. Also, they should have sent you a peel and stick replacment shield

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post #9 of 27 (permalink) Old 05-24-2013, 11:45 AM Thread Starter
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Heatshield removed and stick replacement shield was placed ;)

Tried what you said by not connecting the midpipe/chassis, same issue, leakage :(

By the way, at which level do you tighten the midpipe with the band?

I followed the manual:

1- I put the midpipe in the header with the new gasket
2- Attach the midpipe bolt on the chassis
3- Attach the muffler
4- I tightened midpipe/header then muffler then midpipe/chassis

Getting the midpipe pushed and tightened onto the header not far enough did damage the 3 sections cut of the midpipe for tightening and eventually gasket at the same time :(

I should eventually order a new gasket but how can i fix my midpipe tightening sections? Instead of being round down there it is a bit oval and new gasket might not get in anymore...

Leaving the leaks:
will it lose in performance? will it make any damage?

Last edited by sevenup851; 05-24-2013 at 11:54 AM.
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post #10 of 27 (permalink) Old 05-24-2013, 12:01 PM
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can you feel the exhaust blowing from where your leak is? or is it just water? stupid question i know, just wondering.

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post #11 of 27 (permalink) Old 05-24-2013, 12:20 PM Thread Starter
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The midpipe is cut in three sections for tightening.
At two points of these sections water is coming out.

If i put a tissue around midepipe/header, the noise is clearly different as I can hear a leak without the tissue.

It is difficult to feel it by hand....
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post #12 of 27 (permalink) Old 05-24-2013, 12:32 PM
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use gasket maker... that's what i did... there was leakage after using the gasket maker but i just applied some more to the spots i missed until i finally got everything sealed up... gasket maker comes right off since it's silicone based so you won't have to worry about changing out your exhaust headers or whatever

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post #13 of 27 (permalink) Old 05-24-2013, 01:51 PM Thread Starter
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Hi TSY32

Thanks for the advice.
Did you also change your gasket for a new one.

Did you apply the silicone everywhere then put the gasket and tightened or did you put the silicone over the band and pipes after tightening?
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post #14 of 27 (permalink) Old 05-24-2013, 02:16 PM
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I installed my rs-5 a month ago, but I had the same situation as you. Your exhaust is suppose to go a little more down onto the header pipe. If you have problems with it going down just bend the pipe a tad bit for it to fit around it. Then I bought hose clamps from home depot and used those and also the clamp that came with my yoshi. That solved my exhaust leak.

Last edited by baozer; 05-24-2013 at 02:26 PM.
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post #15 of 27 (permalink) Old 05-24-2013, 02:20 PM
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BTW I didn't use any gasket.
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post #16 of 27 (permalink) Old 05-24-2013, 02:43 PM
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Quote:
Originally Posted by baozer View Post
BTW I didn't use any gasket.
Yep, never used a gasket with mine either. Just slid right on nice and smooth, a quick clamp and she was on there.

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post #17 of 27 (permalink) Old 05-24-2013, 04:41 PM Thread Starter
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thanks all for the advice.

No gasket? Ican try without it but i am gonna have a huge gap I am pretty sure.
The gasket is about 30 mmm thick, I ll try that.

Baozer, any picture how you did it? Did you actually attach it to the upper bolt on the chassis also or did you leave it only attach by the muffler and the big band?

I am gonna add an other clamp also than the original one...
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post #18 of 27 (permalink) Old 05-24-2013, 05:44 PM
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Same happened to me. My oem Honda clamp was to big a didn't fully tighten the Yoshi pipe. Got a smaller clamp which done up a lot tighter and it solved the problem straight away. 6 months later still no issues...


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post #19 of 27 (permalink) Old 05-24-2013, 06:00 PM
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It has been a while, but my 05 came with the Yoshi which I later traded for OEM.

The Yoshi used a different, much thicker gasket; the stock pipe used a thinner gasket that was permanently attached to the OEM slip on. If I recall correctly.
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post #20 of 27 (permalink) Old 05-24-2013, 06:42 PM
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Quote:
Originally Posted by sevenup851 View Post
thanks all for the advice.

No gasket? Ican try without it but i am gonna have a huge gap I am pretty sure.
The gasket is about 30 mmm thick, I ll try that.

Baozer, any picture how you did it? Did you actually attach it to the upper bolt on the chassis also or did you leave it only attach by the muffler and the big band?

I am gonna add an other clamp also than the original one...
I don't have pics, but yes it is attached on the upper bolt on the chassis and also the muffler area.
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post #21 of 27 (permalink) Old 05-24-2013, 06:49 PM Thread Starter
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Thanks Baozer,

For me it will be impossible to attach both of them as the link pipe will then be much lower...

I ll check later today how I can fix that with all your propositions ;) Thanks
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post #22 of 27 (permalink) Old 05-24-2013, 06:51 PM
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New gasket, new clamp w/bolt and high temp silicone. Also ck the bracket and bolt on the bottom of the headers. Mine leaked too
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post #23 of 27 (permalink) Old 05-24-2013, 06:54 PM
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Quote:
Originally Posted by sevenup851 View Post
Thanks Baozer,

For me it will be impossible to attach both of them as the link pipe will then be much lower...

I ll check later today how I can fix that with all your propositions ;) Thanks
that's weird.. should be able to fit both areas.. maybe some adjusting around. I don't understand the link pipe being much lower. Could you take a pic of it bolted on from both area and show me what it looks like from the mid pipe and the header pipe?
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post #24 of 27 (permalink) Old 05-24-2013, 07:28 PM
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If you use the gasket it should be slid all the way down to the lip on the exit side of the cat.

I have never used the gasket with a slip on.

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post #25 of 27 (permalink) Old 05-24-2013, 09:50 PM
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06 w/rs5 slip on you need the gasket...
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post #26 of 27 (permalink) Old 05-25-2013, 02:33 AM
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Quote:
Originally Posted by sevenup851 View Post
Hi TSY32

Thanks for the advice.
Did you also change your gasket for a new one.

Did you apply the silicone everywhere then put the gasket and tightened or did you put the silicone over the band and pipes after tightening?
i didn't have to use a gasket... i have an aftermarket header and exhaust so i just slipped the midpipe over the header pipe, applied gasket maker, and put the clamp on... tightened the clamp and waiting for the gasket maker to cure... i then started the bike again to look for anymore leaks and applied more gasket maker to areas that was still leaking... i'm not sure how your exhaust mounts on with the gasket, but i would assume, using your best judgement, you'd apply the gasket maker to any gaps lending itself to leaks... i just smeared a whole crap load to those areas until the air stopped leaking

man and machine... to be one is just a dream... the corner and the lean that's what i mean... blowin some steam relaxing it may seem... addicted like a fiend...

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post #27 of 27 (permalink) Old 05-25-2013, 05:24 AM Thread Starter
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I have the original header wich might be smaller than aftermarket header (about 3 mm thickness on the gasket).
Just to be clear, I install aftermarket yoshi RS5 on original header so gasket is a must I assume.

Baozer, you have got the pictures earlier in the post of this thread.

First picture shows the link pipe in the header but not fitting completely, in this case I can bolt the link pipe to chassis.

Second and third pictures, i pushed down the link pipe but then I am out of axle to fit link pipe on the chassis, missing about 0.5 cm.

Last edited by sevenup851; 05-25-2013 at 05:26 AM.
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