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**sandeepcf** · 08-18-2014, 12:39 PM

re: CBZ xtreme / Hunk

Originally posted by ashwin.terminator View Post

This is what the bike sounds like today after a spirited 12km ride. I also adjusted the tappets yesterday to 0.07 at inlet and 0.10 at exhaust. I'm sure the clearances were set correctly. If I ride sedately, I can't hear it much regardless of the distance, but just once I hit 90, it started.
What could be wrong?
But what concerns me is, it's been 30,000km for the bike. Is it time to replace the rocker arms?
I have the same sound in my Unicorn(started like this and now it is more) and I thought the clearances were wrong and adjusted like 5~8 times. But nothing helped. The mechanic said it is an issue with connecting Rod and crankshaft. Also these sounds get louder with heat, If valve clearance is high the sound should go away with heat right?

Also, while adjusting the tappet clearance, while trying to get this alignment, the 2 guidelines would never become parallel to the cylinder head. They would also be a little slant. I am not sure if this is a problem? Same thing here.

**vjxm** · 08-18-2014, 02:05 PM

re: CBZ xtreme / Hunk

Today i opened the air infection value ' found oil On the Marked area .What would be reason for oil atthis area.

**ashwin.terminator** · 08-18-2014, 09:33 PM

re: CBZ xtreme / Hunk

Originally posted by sandeepcf View Post

I have the same sound in my Unicorn(started like this and now it is more) and I thought the clearances were wrong and adjusted like 5~8 times. But nothing helped. The mechanic said it is an issue with connecting Rod and crankshaft. Also these sounds get louder with heat, If valve clearance is high the sound should go away with heat right?

I don't think the 2 guidelines thing not being parallel is a huge issue.

I'm not very sure about the exact functioning of these parts. But I assume expansion due to heat is the reason why the clearance increases further thus creating a bigger racket.

As to why it increases due to heat, I guess someone more experienced can answer.

As for your bike's sound, I guess you can try replacing the Rocker Arms as well. Try this:

How To Use a Giant Screwdriver To Find Car Noises

https://www.youtube.com/watch?v=U927cYhQXB4

Scotty Kilmer, mechanic for the last 45 years, shows how you can use a giant screwdriver to fix noises that your car is making. Sound travels great in metal,...

To find out where the noise is coming from.

**sibun** · 08-18-2014, 11:04 PM

re: CBZ xtreme / Hunk

Originally posted by ashwin.terminator View Post

That is so true [MENTION=28527]sibun[/MENTION]. Thank you for all your help!

And lovely pictures. The Hunk too, is lovely for touring.This is what the engine sounds like,

Could you please confirm if these are rocker arm noises?

Ya thats the rocker sound. Along with it the timing chain tensioner is also gone. You can hear the sound on idling like grinding machine. Thats the timing chain tensioner sound. And the ringing noise is the rocker arm bearing sound.

Originally posted by Jith_in View Post

Hai all.. Is that true the best tuning of cv carb is between 3-3.5 turns? Since guys here are telling like that today again i tuned carb and got setting of 1.85 turns(this was the previous setting) when reaches about 3 turns rpm decreases and constantly varying. Then how a cv carb can work at 3.5 turns? If it is the correct method, then why company did't tune like that? Why they are setting at 1.7 turns?Tapatalked from my Canvas A76

To tell you fro the keihin japan tuning guide, then it has been mentioned that if the mixture screw is going beyond 2 turns that means a smaller slow jet is required and if it is going less than 1 turn that means a bigger slow jets are required. Tuning depends on what is setting of slow jet. A bike which has bigger slow jet will require less number of turns and a bike that has smaller slow jet will have more number of turns to be opened. Extreme pilot jet circuit permits the tuning to be set in between 1.75-1.9 turns. Similarily in some bikes the pilot jets will be lean and thus requires as many as 3-3.5 turns. So do not be too worried about it. Instead try to get optimum tuning and see the bikes performance.

Originally posted by Jith_in View Post

What is that part and what is it's use?Tapatalked from my Canvas A76

Originally posted by sandeepcf View Post

Also, while adjusting the tappet clearance, while trying to get this alignment, the 2 guidelines would never become parallel to the cylinder head. They would also be a little slant. I am not sure if this is a problem? Same thing here.

That mark coinciding with the parallel surface depends on the timing sprocket. Some sprockets mark will be parallel some will be slight slant. Loosen the timing chain tensioner and the mark will get parallel. It is not a problem until and unless timing becomes a problem. Slight up down is ok. But let me tell you that if the sprocket is moved one teeth left or right while fitting the chain, bike will feel like it is fully gone. It is a important part and always try to fit it as much possible keeping the timing equal.

Originally posted by vjxm View Post

Today i opened the air infection value ' found oil On the Marked area .What would be reason for oil atthis area.

There will be oil in it as exhaust port is connected in it. Nothing to worry as it is quite normal.

**ashwin.terminator** · 08-18-2014, 11:40 PM

re: CBZ xtreme / Hunk

Originally posted by sibun View Post

Ya thats the rocker sound. Along with it the timing chain tensioner is also gone.

Oh, so I will be changing the Timing Chain Tensioner and the Rocker Arms this service then. Could you tell me what is the part number from this picture, Sibun?

Originally posted by sibun View Post

Loosen the timing chain tensioner and the mark will get parallel.

How is that to be done?

Again, thanks for all your help here, Sibun! You are an invaluable asset to all of us!

I am posting some pictures of my Spark Plug for reference.

**sinnerz2000** · 08-19-2014, 01:42 AM

re: CBZ xtreme / Hunk

Originally posted by PRATHM View Post

Hello Friends.

As i had posted long back. i changed front fork oil at hero ASC & mechanic over there put 175 ml of oil. My friend ridden my bike & he said its ok no problem, your bike is smooth. Today took her out after 10 days, as i was busy & not getting time to ride her. I still felt some cycle handle kinda effect. Also while riding at night, i felt that headlight beam was not stable at it was before, that too on smooth road, giving some shaking kind of light throw. So what should i do now, drain fork oil & fill it with exactly 160 ml of oil or this shaky problem will go away. I remember my bike`s handle was not so bouncy before changing oil. Also if alignment of fitting fork changes little bit, will it make effect...?
Kindly reply.

----consecutive posts auto-merged-----

Hello Friends.

As i had posted long back. i changed front fork oil at hero ASC & mechanic over there put 175 ml of oil. My friend ridden my bike & he said its ok no problem, your bike is smooth. Today took her out after 10 days, as i was busy & not getting time to ride her. I still felt some cycle handle kinda effect. Also while riding at night, i felt that headlight beam was not stable at it was before, that too on smooth road, giving some shaking kind of light throw. So what should i do now, drain fork oil & fill it with exactly 160 ml of oil or this shaky problem will go away. I remember my bike`s handle was not so bouncy before changing oil. Also if alignment of fitting fork changes little bit, will it make effect...?
Kindly reply.

Got my fork done today too, mechanic poured a bottle of Valvoline fork oil in each fork. Bought 2 bottles, each 175ml

Sent from my A7+ using Tapatalk 2

**ashwin.terminator** · 08-19-2014, 07:02 PM

re: CBZ xtreme / Hunk

I was looking at these mirrors for the bike. They're about 6cm longer overall and the mirror by itself is 1.5cm longer. And the Hunk has bad mirrors as it is. These mirrors cost Rs. 850.

Worth it?

Link is here: Wholesale Brand New Black Motorcycle Mirror Set For ,ATV Quad Scooter Parts Guaranteed 100% with E MARK AT1135-in Side Mirrors & Accessories from Automobiles & Motorcycles on Aliexpress.com

**Jith_in** · 08-19-2014, 07:46 PM

re: CBZ xtreme / Hunk

It looks like discover 125 st mirrors. Why don't you want xtreme's mirror? It is good and gives a clear view.

Tapatalked from my Canvas A76

**ashwin.terminator** · 08-19-2014, 08:16 PM

re: CBZ xtreme / Hunk

Originally posted by Jith_in View Post

It looks like discover 125 st mirrors. Why don't you want xtreme's mirror? It is good and gives a clear view.

Tapatalked from my Canvas A76

I was just looking at the website.

They even have Indicators integrated with the mirrors! :P

But yes, Mirror change is on the list as well. Not anytime soon though. :P

Brake upgrade by itself is quite heavy on the pocket. :P

**sibun** · 08-20-2014, 10:18 AM

re: CBZ xtreme / Hunk

Originally posted by ashwin.terminator View Post

Oh, so I will be changing the Timing Chain Tensioner and the Rocker Arms this service then. Could you tell me what is the part number from this picture, Sibun?[ATTACH=CONFIG]153800[/ATTACH]How is that to be done?Again, thanks for all your help here, Sibun! You are an invaluable asset to all of us!I am posting some pictures of my Spark Plug for reference.[ATTACH=CONFIG]153801[/ATTACH][ATTACH=CONFIG]153802[/ATTACH][ATTACH=CONFIG]153803[/ATTACH]

The timing chain tensioner is the part no-5 that is shown in the parts catalogue. You can loosen the timing chain by adjusting the tensioner. The tensioner can be adjusted by opening the star shaped screw on the tensioner. Then inserting a thin line tester in the tensioner and twisting the tensioner till its full tight. On full tight the tensioner will get loose. To return back just rotate the tensioner in opposite direction and spring will push it back to original position. While fitting the screw back of tensioner window check the o-ring and fit back.The spark plug color is perfect. No need to touch the AFR screw now.

**itsmevini123** · 08-20-2014, 12:21 PM

re: CBZ xtreme / Hunk

Originally posted by dineshaugustin View Post

minor difference will come. now if your gearing is longer, you might be able to shift gear say 2-3kmph later for 5th gear, which i would love to do since hunk is much short geared.
If you change your front wheel height, then speedo error will occur.

BTW, if you would have opted for 110/80 then cornering might get improved. but with 110/90 i dont think much improvement in cornering. this is theoretical explanation, practically you have explain us about how did you feel...

This is one of the reason why tyres with larger width doesn't comes with higher profile (very few are available, but for totally different category bike).

the same goes when you much under inflate your tyre, the speedo will show higher value than actual but very marginal. for this condition we might experience like, riding feel wise=45kmph, but speedo reading=50kmph

If you found any other theory/experience, plz share with us.

Sorry, After lots of observation I didn't find any change in gearing, I also feel that 1st & 2nd gear of hunk is too short 3-5th are good even in 3rd & 4th bike pulls fantastically after 5K.

That kat-kat sound from the cone set gone which I reported few days back, mech tighten it.

One general question came in my mind that our bikes cylinder size pretty big compare to splendor cylinders, it is because of that tappet and timing chain located on top of which manage the valve open & closing functionality, right?

So these 100cc engines don't have valves and that kind of functionality, because once I was a splendor cylinder open by a mech. I find different compare to my, can somebody clear my doubt ?

**sinnerz2000** · 08-20-2014, 01:13 PM

re: CBZ xtreme / Hunk

Originally posted by itsmevini123 View Post

Sorry, After lots of observation I didn't find any change in gearing, I also feel that 1st & 2nd gear of hunk is too short 3-5th are good even in 3rd & 4th bike pulls fantastically after 5K.

That kat-kat sound from the cone set gone which I reported few days back, mech tighten it.

One general question came in my mind that our bikes cylinder size pretty big compare to splendor cylinders, it is because of that tappet and timing chain located on top of which manage the valve open & closing functionality, right?

So these 100cc engines don't have valves and that kind of functionality, because once I was a splendor cylinder open by a mech. I find different compare to my, can somebody clear my doubt ?

Our bikes cylinder is bigger coz its a higher cc compared to splendor, and every bike has valves and timing chain, even gearless scooters like activa etc.

Sent from my A7+ using Tapatalk 2

**dineshaugustin** · 08-20-2014, 02:38 PM

re: CBZ xtreme / Hunk

Originally posted by itsmevini123 View Post

Sorry, After lots of observation I didn't find any change in gearing, I also feel that 1st & 2nd gear of hunk is too short 3-5th are good even in 3rd & 4th bike pulls fantastically after 5K.

That kat-kat sound from the cone set gone which I reported few days back, mech tighten it.

One general question came in my mind that our bikes cylinder size pretty big compare to splendor cylinders, it is because of that tappet and timing chain located on top of which manage the valve open & closing functionality, right?

So these 100cc engines don't have valves and that kind of functionality, because once I was a splendor cylinder open by a mech. I find different compare to my, can somebody clear my doubt ?

hmm...its good that you didnt feel any change in gearing. that is mostly because you dint change the height of the front tyre. between , you are referring to 5K rmp, that means on top gear right.?

our bike is bit uniquely designed. if you ride apache, you wont find much difference. In hunk/xtreme, torque is inclined towards lower end and power is inclined towards top end. the thing is in our bike the designer used the advantage of torque and reduced the gearing in the lower end, which gives the similar effect of short stroke bikes. and then on the top end they have given more power delivery and hence we can feel the bike is unleashing post 60kmph. so in between this transition, i.e mid range our bike wont be that nice especially 45-60kmph where fz performs exceptionally well.

regarding to your question, all bikes have valves for intake and outlet. and timing chain connects the cam shaft (which actuate valves) with the crank shaft. hence it is mandatory for all bikes. some premium bikes will have two intake and two outlet valves termed as 4 valve engine and technically its DOHC (dual overhead camshafts ). which increases power and can run @ higher speed..

**V!RU$** · 08-20-2014, 05:13 PM

re: CBZ xtreme / Hunk

Originally posted by sibun View Post

Plug condition looks good and tuning is also Ok. Was your tappets adjusted recently by mechanics or showroom guys. If it has been adjusted recently or has been checked in last 7-8000 km then reply me and i will help as i think it is a tappet out of sync problem.

Can you help me solve this tappet out of sync problem...
thanks in advance

**ATHUL4R** · 08-21-2014, 11:48 AM

re: CBZ xtreme / Hunk

CBZ Xtreme engine noise: http://youtu.be/A9KlaYaXslk

Engine sound at the time of first start in morning... The engine not seens smooth like before too..
With in last 500km cleaned Head valves etc replaced tensioner too. Pls help me.
Odo: 27k

Sent from my GT-S7582 using xBhp Connect mobile app

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