Cyclic noise on 2000rpm
#1
Cyclic noise on 2000rpm
Hello, I’m a new member, happy to be part of the cbr community.
I recently bought a nice CBR1000F 1995.
I noticed some annoying cyclic noise on around 2000rpm (especially in morning start- cold). Im attaching a link with a video I took this morning , hope the sound is clear enough
If anyone can identify the source of it. I would be grateful
thank you!
I recently bought a nice CBR1000F 1995.
I noticed some annoying cyclic noise on around 2000rpm (especially in morning start- cold). Im attaching a link with a video I took this morning , hope the sound is clear enough
If anyone can identify the source of it. I would be grateful
thank you!
#2
#3
Yep, I made some further investigation, using a screwdriver, it looks like coming from the front of the engine top end.
The noise in between 2000-3000rpm, when engine warms up the noise is reduced by 80%
I would suspect the cam chain/tensioner, but will be happy to get some advise here...
Cheers
The noise in between 2000-3000rpm, when engine warms up the noise is reduced by 80%
I would suspect the cam chain/tensioner, but will be happy to get some advise here...
Cheers
#6
Maybe try Rotella T5. Its a Diesel oil.
You either need a Motorcycle oil or another type of oil that can withstand the pressures the gears put on it. A diesel oil works well. Many forum members use it.
If you don't use an oil designed to take the pressure of the gears in the transmission, it will loose its viscosity in about 300 miles or so from what I have experienced.
I use Rotella T 5myself and change it every 3,000 miles. I could go longer but I want to keep my CCT healthy.
The oil may help it quiet down once its running but the CCT is the Achilles heel with these bikes. I don't know if any are still available as we have all changed them.
You either need a Motorcycle oil or another type of oil that can withstand the pressures the gears put on it. A diesel oil works well. Many forum members use it.
If you don't use an oil designed to take the pressure of the gears in the transmission, it will loose its viscosity in about 300 miles or so from what I have experienced.
I use Rotella T 5myself and change it every 3,000 miles. I could go longer but I want to keep my CCT healthy.
The oil may help it quiet down once its running but the CCT is the Achilles heel with these bikes. I don't know if any are still available as we have all changed them.
#7
#8
Looking at the shop manual, in the front of the book, on the left side of the page, it says to use 10w30 or 10w40 depending on temperature.
On the right side of the same page it says the standard weight is 10w40.
So perhaps this would be a better choice.
Some members use full synthetic Rotella T6.
On the right side of the same page it says the standard weight is 10w40.
So perhaps this would be a better choice.
Some members use full synthetic Rotella T6.
Last edited by TimBucTwo; 10-07-2020 at 09:00 AM.
#9
The following 3 users liked this post by Naga_Thai: