98 R1 knocking engine

13177 Views 45 Replies 14 Participants Last post by james1300, Dec 31, 2012

Essex05

Discussion Starter · Oct 7, 2012 (Edited)

Just bought this bike, it's in very good nick, 100% original, about 40k miles.

I noticed when the engine is hot (afer about 15 mins of riding) it starts making a knocking sound from the top of the engine (at idle only). Also between 4-5000tpm between half and full throttle I can clearly hear the camshafts working. (like a strong growl, don't know if that's normal or not.)

I've looked all over the internet but can't really find anything that explains my situation properly, it could be the cams, pistons or even exhaust gasket leaks.

Here is a video I made of the noise:

Thanks in advance! :vanish

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deadbanana0717

· #3 · Oct 8, 2012

Essex05 said:
Just bought this bike, it's in very good nick, 100% original, about 40k miles.

I noticed when the engine is hot (afer about 15 mins of riding) it starts making a knocking sound from the top of the engine (at idle only). Also between 4-5000tpm between half and full throttle I can clearly hear the camshafts working. (like a strong growl, don't know if that's normal or not.)

I've looked all over the internet but can't really find anything that explains my situation properly, it could be the cams, pistons or even exhaust gasket leaks.

Here is a video I made of the noise:

http://www.youtube.com/watch?v=28MfVCcXb1c

Thanks in advance! :vanish

Very Nice Bike! Red and White! Clean looking too...

Not too sure, I had that problem with my 98s and 99... I was never able to find an explanation. Ive packed on 10K the 99 (approx 40K kms) and 3-5K on the 98, (50-55K kms)

both bikes still running fine just noisy at times.

Oil changes help. I have yet to pop the head off to check the valves tho.

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