94CBR1000F pos cct prob
#1
94CBR1000F pos cct prob
Hi everyone...Sorry I posted this in tech area then found this forum which is where i think it should be....
My Delemma: I have just purchased a 94 CBR1000 (after wanting one for decades) and I have what I think is a cam chain or cct problem....intrestingly though the bike starts fine and doesn't rattle much at all....the main problem seems to be passing through the 2500-3000rpm range where the rattle is terrible...seemingly worse when slowing down to stop in 1st or 2nd gear....however if I pull the clutch in the noise stops immiediatly.....Does this sound like cct or chain or valve prob etc etc. You can e-mail me on tonyronnii@westnet.com.au Any help would be really apprieciated.....Cheers
My Delemma: I have just purchased a 94 CBR1000 (after wanting one for decades) and I have what I think is a cam chain or cct problem....intrestingly though the bike starts fine and doesn't rattle much at all....the main problem seems to be passing through the 2500-3000rpm range where the rattle is terrible...seemingly worse when slowing down to stop in 1st or 2nd gear....however if I pull the clutch in the noise stops immiediatly.....Does this sound like cct or chain or valve prob etc etc. You can e-mail me on tonyronnii@westnet.com.au Any help would be really apprieciated.....Cheers
#2
Sounds more like a clutch problem to me.
Cam chains generally make a noise UP TO around 2500RPM when cold
Clutch is not a big issue - you can do it yourself with a bit of handy spanners and help from the guys here...............
Take about 3 hours for the whole job I'd say, including tea !.
It MAY be the balancer shaft, also not a problem, about 20 mins to adjust........
Cam chains generally make a noise UP TO around 2500RPM when cold
Clutch is not a big issue - you can do it yourself with a bit of handy spanners and help from the guys here...............
Take about 3 hours for the whole job I'd say, including tea !.
It MAY be the balancer shaft, also not a problem, about 20 mins to adjust........
#3
#4
Guest
Posts: n/a
Yer , Pete is prolly right , but I recon with those klms, if she has not been looked after to well , that it could be the cam chain ....
Whats the noise like free revving from idle when standing still..?
At near 100,000 klms , mine has a rather wicked rattle that seems to happen more under slow deceleration and under 3000rpm when taking off allot of the time ....
Hard to say for sure really...
We have resorted to a quick sound file from members before to help diagnose these noises for members on the CBRF...
Whats the noise like free revving from idle when standing still..?
At near 100,000 klms , mine has a rather wicked rattle that seems to happen more under slow deceleration and under 3000rpm when taking off allot of the time ....
Hard to say for sure really...
We have resorted to a quick sound file from members before to help diagnose these noises for members on the CBRF...
#5
#6
I will try to record or diagnose a bit deeper.....it is mostly promanant on decelaration, but only just before stopping or riding in 1st gear thru a carpark, if i pull the clutch in rattle goes immiediatly. I will start it from cold tomorrow morning and and try to be a bit more specific.....thanks heaps for your reply's guys
#7
Join Date: Aug 2008
Location: Republic of Boon Island
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Things to look for
Check
Clutch center locknut and washer are torqued down
If they seem okay
I recommend you might as well open it up and
check clutch lifter bearing in behind clutch pressure plate
if okay keep going then & check needle bearing too.
But then of course by this point now you are into it,
far enough to just go ahead and do a clutch job........
not too difficult as previously mentioned
Lifter or needle bearing most likely though, to me, s'pecially if it
vanishes when you pull the clutch and the bearing then
becomes loaded.........might have had wrong lube in it at
some point or not enough or just plain neglected
MK
Clutch center locknut and washer are torqued down
If they seem okay
I recommend you might as well open it up and
check clutch lifter bearing in behind clutch pressure plate
if okay keep going then & check needle bearing too.
But then of course by this point now you are into it,
far enough to just go ahead and do a clutch job........
not too difficult as previously mentioned
Lifter or needle bearing most likely though, to me, s'pecially if it
vanishes when you pull the clutch and the bearing then
becomes loaded.........might have had wrong lube in it at
some point or not enough or just plain neglected
MK
#8
OK I made a recording but can't attach it...it says invalid file !!!!!
I cold started the bike this morning on choke no problems....warmed it up no problems....on doublestand ran it up through the gears no problem.
Took it for a ride down the road rattle starts....only between 2000 and 3000rpm above or below this the bike is perfect, so it appears to be a load issue and only when in gear eg. pull the clutch in rattle disapears instantly even if I maintain 2-3000rpm when clutching.
the rattle will not occur when in neutral and holding between 2-3000rpm or at any other time. I have just read this post back to myself and realized I think I have a clutch problem. I am going to have to get a workshop maunal and check the things mkavanagh suggests as a start as It would be a bummer to relpace cct and chain only to find problem still exists.....Anyway really apprieciate all your help and will keep you posted. If anyone has experienced this problem please let mre know.
cheers
I cold started the bike this morning on choke no problems....warmed it up no problems....on doublestand ran it up through the gears no problem.
Took it for a ride down the road rattle starts....only between 2000 and 3000rpm above or below this the bike is perfect, so it appears to be a load issue and only when in gear eg. pull the clutch in rattle disapears instantly even if I maintain 2-3000rpm when clutching.
the rattle will not occur when in neutral and holding between 2-3000rpm or at any other time. I have just read this post back to myself and realized I think I have a clutch problem. I am going to have to get a workshop maunal and check the things mkavanagh suggests as a start as It would be a bummer to relpace cct and chain only to find problem still exists.....Anyway really apprieciate all your help and will keep you posted. If anyone has experienced this problem please let mre know.
cheers