929 Odd engine noise

mma_fighturr · 01-10-2009, 12:18 AM

Hi I have a previous post about a red light and this engine noise. I found out what the red light was and that is getting resolved. However there is a quick small noise coming from the bottom right side of the bike. Ill narrow it down a bit for you.

So Its in the shop now and there was a scope through the engine and it was fine. It has nothing to do with the CT or CCT. The mechanic took the right case off and can not figure out what the problem is. Heres a video of the noise. It only happens when I rev it. It doesnt match RPM's and its only for a quick second at the top of the RPM when I rev the bike. its kind of a quick clatter noise. Heres the link (its about halfway through the video, ignore the light and oil issue) YouTube - 2001 CBR 929rr .

Im going to the shop tomorow morning to make a decision wheather to keep the bike in the shop and keep troubleshooting and take the bike out and live with it. Im going to sugest maybe checking the transmission or crank rod maybe? I`ve just spent a few hours reading previous post`s about engine noise and kinda narrowed it down to... its eighther the CT or CTT or... just live with it because most CBR`s are loud.

Im jus a bit stressed because I just sold an imprezza I imported from japan and couldnt stand troubleshooting on my own because mechanics in Canada had no clue how to work on the car. Now the first problem with my new bike and the mechanic tells me he has no idea what the problem is.

Thanks for taking the time to read this and all posts will help!

bladeracer · 01-10-2009, 12:55 AM

The error 35 and the whirring noise are the servo motor.
I still can't hear any strange noises coming from the engine though.

mma_fighturr · 01-10-2009, 12:59 AM

hmmm... its like avery quick clatter at the very highest RPM when i rev it. like at the very top of the rev its like a short clatter. Ill make another vid tomorow because when the bikes warmer It makes the noise a bit louder and it comes and goes more at idle.

mma_fighturr · 01-10-2009, 1:02 AM

Like when the camera is pointed directly at the clutch plate on the right side ( I think its the clutch plate? lol) thats when you can hear it the best when revved!

187mustang · 01-10-2009, 1:20 AM

clutch basket? mine made noise on my ol 929 i had

mma_fighturr · 01-10-2009, 1:21 AM

hmm, il mention that to him, thanks for the post mustang. Is it a very bad noise? Or is it something you can get away with?

187mustang · 01-10-2009, 1:40 AM

I delt with mine mine came in on idle and chattered but when I reved it up it went away. You might be able to pull the cluch cover and feel for play in the clutch basket. It would be simple to do yourself. I had a spark plug come loose in the head and I wound up putting my spare motor in my bike. so I never fixed it. It was a common thing for the 929 (the clutch) Based on your video the noise is just a quick second and I would guess it is the clutch basket or a really loos cam chain tensioner. I replaces my CCT and it didnt make a difference. I'll se if I have it yet if I do I'll sell it to ya for like $20 if you want to try it. it is a Bit$# to put in tho. Based on your video tho if it were a rod knock it would be consistant it wouldng be for just a quick second, and it would get worst when it gets warmer because the oil gets thinner. I think a good synthetic would be wise if you think it is something serious because you would have better lubrication as it gets warmer. and an FYI you can use the MOBIL 1 car synthetic it will not make your clutch slip like other car synthetics. it has a lower moly content. I used it in my bikes for a long time. good luck

187mustang · 01-10-2009, 1:42 AM

here is something you can try. start the bike, pull the clutch lever in and rev it, if it is the clutch basket, it shouldnt make a noise with the clutch in because it has tension on it from the springs

mma_fighturr · 01-10-2009, 1:44 AM

When it gets warmer it does get a bit louder and sometimes you can hear it when it idles. Its definitely not the CCT or CT. And he had a scope in the engine and everything looked good he said...?

187mustang · 01-10-2009, 1:47 AM

my clutch basket noise went away when i pulled the clutch in

mma_fighturr · 01-10-2009, 2:36 AM

icic. when i go to the shop tomorrow morning ill try the clutch. If the noise is still there then that rules out everything else. I think if all else fails im going to get him to check that servo flap. Is it possible for that thing to flap around? Because it doesnt go with the engine, it only happens when i rev it up kinda when the flap should open. I wonder if its just loose and flaping around? Again im not very mehcanically inclined so I dont know if they can do that or not?

bladeracer · 01-10-2009, 2:52 AM

The flap is in the airbox and is plastic. If the servo is not working it should be removed from the airbox or the engine could be starved at high rpm.
The HTEV in the exhaust is a rotary valve and should not make any noticeable noises.

waller · 01-10-2009, 2:09 PM

hi there do your self a favour and take the cover off the exhaust valve it does indeed tend to sound very bad at about 5000 rpm its worth a look it will only take 5 mins and if its how they usaly are it will be flapping in the housing and all you have to do is replace the carbon bushes that are 6 uk pound and a ten minuite job that would be my first port of call judging by your vidoe what is the millage? hope this helps its a very comen problem that i have seen many times

mma_fighturr · 01-10-2009, 3:35 PM

Ill mention that to him Waller thanks for the post, the bike has 28 000km on it. So this morning I went to the shop and checked out what was going on with my bike. He Said he's checked out everything possible so far without splitting the engine and everything seems ok. Theres a chain thats a bit loose in the clutch part (sorry I dont know the names of all the stuff).

He had some expensive thing to listen to exactly where the noise is coming from and its right in the center of the bottom middle. The servo is out and he thinks the cables were put on wrong and the motor is fine, it wants to turn but somethings not allowing it to. Thats is the least of the worries lol.

So hes going to take apart the engine and figure out exactly what the noise is. Heres a few pics to show where its at..

http://i266.photobucket.com/albums/i...r/DSCF1867.jpg
http://i266.photobucket.com/albums/i...r/DSCF1868.jpg
http://i266.photobucket.com/albums/i...r/DSCF1869.jpg
http://i266.photobucket.com/albums/i...r/DSCF1870.jpg
http://i266.photobucket.com/albums/i...r/DSCF1871.jpg
http://i266.photobucket.com/albums/i...r/DSCF1872.jpg

bladeracer · 01-11-2009, 2:11 AM

The chain behind the clutch drives the oil pump and is very loose by design.

waller · 01-11-2009, 7:08 AM

please check the exhaust vavle first i have had people say they have had new engines fitted and that the new engine makes the same noise and i fixed it for ten mins work and 6 pounds in cost ,i may be wrong but you may be getting ripped off ,you do not have to run the bike to check the vavle just take the little cover off and wiggle it if it moves up or down then its worn ,the other way you can fix them some times is to just stretch the spring that puts the preload on the vavle it realy is that simple ,the main reason im concerned is the way you say the cam chain and tensiour was checked ,because all you have to do is undo the tensiuor bolts this lets the tensiour move this will over tigthen the chain if the noise is still there then it is not the chain and you simply re tension it the right way the exhaust vavle will make it seem like the noise is in the bottom of the engine cos thats were it is ,it could be bottom end but it would be unusaul at those miles unless its been wheeled for miles and miles what rpm does the noise happen at thats the impotant bit ,sorry to go on but im only trying to help

bladeracer · 01-11-2009, 7:17 AM

I agree with you. It seems to me the mechanic is jumping straight into stripping the engine without having done some very basic diagnostics first.
You have a very clear servo motor error code and noise but this doesn't appear to have been addressed at all yet?
How many kms have you done on the bike so far?
Have you done enough mileage to have noticed if there's any reason to suspect any problem with the engine?
I've listened to your video a few times and I can't hear any noises that would have me wanting to see inside the engine. I grant that in the flesh, touchy feely is far better for diagnosis though so perhaps your mechanic does suspect a problem but so far you haven't mentioned that he's chasing up anything except what could well be a normal noise?

mma_fighturr · 01-11-2009, 2:14 PM

It opens Tuesday again... Im going to mention about that. Like I said I dont know much about bikes but he was explaining the noise was coming inside the engine and he needs to look in it to really see whats going on.
In the video I didint let it warm up enough to really here the noise. The noise comes in at any rpm when reved. You could just give it a quick rev to 2500 rpm and you will here a little clatter noise for about a second. In the video you can hear it for a second at the top of each rev... You can really here it when the camera is upside down and pointed at the clutch case.

Im going to write down what you guys wrote about the exhaust valve, because maybe thats something that he has missed. The bike has 28 000 km on it and I havnt rode it at all yet because I just purchased it off of an aquantance. The owner was sure it was the timing chain and said he would pay half of any other cost to fix the bike if it wasnt. So I contacted him yesterday and he was morethan happy to fork out some cash (thank god).
The servo motor he is saying thinks Is fine, he said it wants to turn but somethings not allowing it to so he thinks its somthing to do with the cables or how It was hooked up. On tuesday I will find out more and make sure to tell him about the valve... the noise is definatly coming from inside where the clutch is though so I dont know where the exhaust valve is or If it is by there.

Thanks for the help!!

bladeracer · 01-11-2009, 4:15 PM

If it's coming from the clutch you need to run the engine and see if it changes as you load and unload the clutch - as -er 187mustang's post. If it does then it's most likely the damper springs in the basket which isn't usually a problem.

mma_fighturr · 01-11-2009, 5:56 PM

Ya we tried with and without the clutch, it was still there

187mustang · 01-11-2009, 8:57 PM

You could take it out and run the piss out of it, and if it still pulls like a train then your internals are probably ok. MY zx-7r made some pretty bad clatter and it turned out to be the cam chain, chain guides and tensioner. I would get a second opinion before I let them split the cases and tear the motor down. If it is internal you could probably get a used engine for less than the cost of repair but I think with that low of miles its problably something minor the 929s are tough as nails. You could put a 954rr motor in that thing to.

mma_fighturr · 01-17-2009, 12:07 AM

Hey, so ive been very bsy working latley but I managed to get in the shop and mention to the mechanic about what waller was talking about, so he was going to check that out before doing anything drastic. Thanks for the help because maybe tommorow morning ill go in the shop and hopefully that will be the problem.

One question. Where do I order parts for my bike? I saw some stuff on ebay motors and another site I heard of was Ronnies. But theres only the 900r, which I dont know If those parts will fit on my 929. Im looking for a Servo motor with cables, If the problem turns out to be in the block then Ill need a head gasket as well. An oil pump chain ( apparently the one on my bike is to loose ) and valve guide seals. Im gonna look around this site for some and google a bit when my son goes to bed soon, but just thought Id ask if you guys knew of any sites or if Im better off going to honda dealersahip?

bladeracer · 01-17-2009, 3:49 AM

Yes, the 929 and 954 are 900RR's.
The oil pump chain is designed to be very loose so I wouldn't be concerned about that.
There are a bunch of online parts sources.
Bikebandit or Ron Ayres would be a start.

mma_fighturr · 01-17-2009, 8:01 PM

alright so... I found out what this whole problem was and its not to good. The shell bearings were all messed up... the number 3 spun and the rods screwed the cranks screwed and some other stuff. I need to find a used engine now

187mustang · 01-18-2009, 2:25 PM

I have one Send me a PM.

dave6688 · 07-28-2009, 4:25 PM

Quote:

Originally Posted by waller

hi there do your self a favour and take the cover off the exhaust valve it does indeed tend to sound very bad at about 5000 rpm its worth a look it will only take 5 mins and if its how they usaly are it will be flapping in the housing and all you have to do is replace the carbon bushes that are 6 uk pound and a ten minuite job that would be my first port of call judging by your vidoe what is the millage? hope this helps its a very comen problem that i have seen many times

Hi, I have the same issue that you have mentioned here. I know it is the bearings. How can I replace the bearings myself. This noise has been driving me crazy for a long time. thanks for any info you can give me.

waller · 07-28-2009, 6:07 PM

Quote:

Originally Posted by dave6688

Hi, I have the same issue that you have mentioned here. I know it is the bearings. How can I replace the bearings myself. This noise has been driving me crazy for a long time. thanks for any info you can give me.

they are easy to replace just smash them out then press the new ones in ,its easy but as they are carbon they are extremely brittle you need 2 but order 4 as youl break at least 1 and there dirt cheap from honda anyway ,any more questions just ask

MACI4LIFE · 07-28-2009, 7:16 PM

your youtube vid is gone. i wanted to compare your noise to mine to see if i'm having the same issue. i get intermittent clunking sounds at idle. from the bottom right side area. it goes away when i give it revs though.

waller · 07-29-2009, 1:21 PM

just take off the exhaust vavle cover and put your finger on the 10mm nut and if its the bushes you will be able to change the rattle by changing the preasure you have on it
its only a few mins as you can just take off the lower faring
if you need any more help just ask but if its the vavle youl know straight away

MACI4LIFE · 07-29-2009, 3:52 PM

Quote:

Originally Posted by waller

just take off the exhaust vavle cover and put your finger on the 10mm nut and if its the bushes you will be able to change the rattle by changing the preasure you have on it
its only a few mins as you can just take off the lower faring
if you need any more help just ask but if its the vavle youl know straight away

if you're replying to me and talking about the htev, then it doesn't affect me cause i have a full system erion on the bike.