Thank you for the numbers.
I am paying for these parts.
There is a horrible vibration and rattle at around 5k rpm. Apparently this part is the culprit and solution for it.

Well I get a little hazy here, appreciate if you can clarify.

If this part is found to be culprit how did this part get worn out so soon? If its manufacturing defect, then HMSI has to replace it under warranty; the other reason why this could occur is because of incorrect clearance for which SHIMs not changed at appropriate time is the culprit.

Why did this happen? What's dealer's response to it?

Need some help on my cbr250...
I got it on 16th of sept 2011 n til now m pretty much happy with the performance... Covered 3000kms til now... Tried doin top speeds n touched 148kmph once! Usually i ride at speeds around 100-110kmph as my bike runs most of the times on highways... Since 1000kms i m noticing some tapet noise and also little vibes around 4k-5k rpm... The vibes are not so high but stil doesnt feel smooth... N this noise and all m noticing especially in dese hot summers when my bike gets extremely heated especially in traffic... I sent an email to honda and they called me the very next day asking me to visit fortune motors in hyderabad(place whr i stay). I approached them and asked dem to have a look at shims as that is supposed to b faulty in most cbrs... The mechanic checked the clearance and said its k as per manual... No extra gap is seen and the shim must be in gud shape....the tapets sound is heard very less n tht too when u ride d bike hard or when it gets heated alot, say after riding 10kms or so at 110kmph or so... Does this hav to do anything wid d shim?? Is it normal? Or shud i ask them to change the schim at any cost??
And btw i thought it must b cos of summers so i changed my oil grade to 20w50 castrol gtx... After d oil change i found it a little smoother but stil not upto d mark... Any idea???

One more thing i forgot to mention is... When the bike is functioning at low rpms that is around 3-4k and when i start revving it harder i hear some abnormal tik tik sound from the engine which has to be heard carefully.. D sound appears similar to when you ride on a freshly laiden tarmac road n those small sticky particles hit the fender and engine! Exactly d same sound is heard just 2-3times when revving from 3-4k rpm especially if d bike is climbing slopes, sound is more noticeable and for dis reason i test rode one more cbr at servicing centre and found the same in that bike too... So is it normal for the cbr or d bike i rode also has the same problem and the owner isnt noticing it???

^^^ Shows you haven't changed a bit!!! Its a mere copy paste of your previous post, don't know what pleases you in posting thing in such hard languages Can't you take sometime to post things clearly when you're expecting some help?

Anyway from what I understood...
- Your engine oil grade is highly wrong; go through post #7600 to understand what engine oil grade should be used
- If ASC says clearance level is right, then it is right, nothing to argue more about it; all the tappet noise & stuffs cannot be determined unless they're heard in person
- See the previous post from Diuz; quite a chance that might be an issue in your case too
- About the engine heat, unless the temp guage shows over 3 bars, there's nothing to worry & all the heat is quite normal
- I haven't heard or not sure about that noise thing you mention; I don't lug the engine, so I don't know. May be someone who enjoys lugging their engine can help you better!!!

I changed all the short forms from the previous post
You can see that buddy...
And thanks for the instant help
Btw cam tentioner sounds totally different, d sound you get from a faulty tentioner is totally different as far as i know...
Even though i will enquire about it and see...
How about motul semisynthetic? Is it beter than honda fully synthetic?
Also i read somewhere synthetic oil is not healthy for wet clutch... It that right?

Ok

All these are addressed more than elaborately in post #7500 & #7600; please, go through them atleast once, you'll not have any such thoughts any more.

Pls post the source of the link & let's discuss

Is it?

is not same as
And this noise & all I'm noticing especially in this hot summer

is not same as
extra gap is seen & the SHIM must be in good shape; the tappet sound is heard very less and that too when you ride the bike hard or, when it gets heated a lot

Anyway, if I find it hard to understand, I'll just ignore it like I did in the morning. Sorry, that's me!!!

I am not talking about lugging the engine...
What m saying is whenever you pull it from bottom, or just normally from 3.5 to 4k rpm it sounds as if some metal thing is hitting inside( like small metal particles)
I gave you an example of hearing the sound from the particles hitting inside the fender when you ride on a freshly laiden road... Hope you got me

Then try it on a different road (not so freshly laid road or nice highway), if you don't hear it, then the issue is not with the motorcycle.

Lol
I just compared the sound to what i am getting from the engine...
I meant to say the sound is similar to that!
I didnt mean that i ride on freshly laiden roads!

I'm not really sure how you can hear this sound when on the move I cannot hear such minute details when riding; such noises can be understood only through a test ride. Get in touch with ASC, IF, you think that's an issue.

Asc guys noted the sound and told me its normal in all cbr's!

I went through your posts, it just says to use 10w30fs provided by honda...
But according to temperature changes, one can change the oil grade and thats the reason i tried 20w50 castrol gtx...

And you know what, asc guys themselves asked me to do so and see as oil grade wont harm your bike until and unless you use a reputed one along with a proper grade... I asked them whether i can go for 20w50 as the difference exists in viscosity and the temperature the oil can bear, they asked me to get it and they will replace it with the one in there(10w30fs-the one i was using before).

So they themselves replaced it with castrol gtx and i feel the bike operated smoother now at higher temperatures than before.

On seeing this result he asked to shift to motul the next time and definitely you will find it much smoother!

Ok

Up to you, but 10W30 is more than suitable; for instance Motul 10W40 (10W30 isn't available in Motul) costs more than HMSI's 10W30 & yields slightly better in smooth engine. Point is 10W30 is just sufficient. Anything more is only experimental & learning.

Just like I said above; Motul is certainly a better engine oil than HMSI/Castrol.

That was really nice of you
Thanks alot

Wanna try motul once!
Are you toking about fully synthetic motul or semi synthetic?