Re: CBZ xtreme / Hunk

I am using old hunk (2010 modal). This is one of steadiest bike I rode in ~150 segment. I agree with @Krishna3450
unicorn seems like a 125cc bike.

I am looking to buy new Hunk 2016.

Except Engine, inverted GRS (what is benefit of this??) and graphics . Following is feature given on official site.


Hunk 2010 doesn't have it.

Benefit, found on some other forum: 'Viscous' Air Filter have viscous liquid on the membrane in order to trap dirt ( the way grease or mustard oil container gets deposit of dirt wherever its leaking or spilled)
Viscous Air Filter protects engine and engine oil quality is also retained by restricting dirt or other suspended particulate in air.

Re: CBZ xtreme / Hunk

Viscous air filters are being used in Unicorn for years now. Honda used to advertise it as a feature, saying it needs less maintenance. Its replacement interval is 18k kms, if I am not wrong. Normal paper air filter needs replacement around 10k kms. While it may be correct that it would trap dirt more effectively, it has nothing to do with engine oil IMO.

Re: CBZ xtreme / Hunk

Can you post a video of same. Can't say without hearing the sound.

The cam shaft you replaced was it of extreme or achiever. Get it checked.

Post a video of the sound. Will be able to help better.

Go for it.

As for viscous air filter, it is for lazy customers who just change oil and run bike. Moreover its good for servicing as less time for each bike and thus more bikes can be serviced in service center. Since it cannot be cleaned, you will need to change and thus more revenue for company.

And that change at 18k is crap. We have a stunner in family and it hardly last 7-8k between changes. And the bad thing is that it can't be cleaned. So you have to forcibly change it.

My Joy has a foam filter. Is there any problem?

No. Infact its better as i wash it every 2k kms and its like new. Lasts for 30k kms and i change it after that. And engine life is no less.
So why did hero changed to paper filter in new splendor and all. Simple it will need change at 8-10 k. If like Joy air filter will be replaced at 30k then company will get less in spares.

Recently changed the extreme left hand switch gear because of broken horn spring. For a matter of just Rs.2 spring changed whole switch gear. Costed me Rs. 300.
Compared that to the Joy switch gear, it costs Rs. 580. Near twice. Why?

Quality. No wonder the factory switchgear is still working flawlessly at almost 4 Lacs kilometers. The clicking while operating will put new switch gear to shame.

So why do company provide cheaper and low quality spares.

Two things:-
1. Business and
2. customer demands.

As for business then first of all if spare is high priced then customer will go for low quality local spares. Second thing is that if spares failure rate is low what will company get revenue. Remember spares makes more profit than new bike sales.

As for customer demands then people want spares for low price. People do not worry how long they last. They need to see how much they are spending.


Same with viscous filter.

And as for inverted GRS then it doesn't provide any benefit but may be the rear panels and Saree guard are re-designed, so the reservoir couldn't be placed above, so down position.

Moreover there were lot complains of oil seal failure and oil seeping and thus change of GRS unit so the inverted position. Remember the ZMR has the inverted position and no oil leak complaint on it.


As for my extreme, its at 70k Kms. Yes it is clocking kilometers like crazy.

After using rolon chain lube to lubricate chain it has become super smooth.

Changed the HT cord to my Joy Ht cord.

Also have added a Led auxiliary light to leg guard as i ride at night on weekends to home.



Led Auxilary light with Osram Silverstar

Re: CBZ xtreme / Hunk

Sibun, Is it running on DC? Can you mention the cost please?

Re: CBZ xtreme / Hunk


Yes I double checked the cam shaft, its of extreme. 14100-KVE-900

Yes here are the link to video








Thanks!

Re: CBZ xtreme / Hunk

Hi guys which is better xtreme sports or hunk?please give ur valuable suggestions

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I think hunk has less pickup thab xtreme

Re: CBZ xtreme / Hunk


My 2007 Xtreme has the same noise (even louder valve sound). Please share if you find out the exact solution to the problem. I am bit reluctant to open the engine.

Re: CBZ xtreme / Hunk

Bro can you provide detail related to LED lamps installed on your bike, post pics as well. With Osram silverstar, light through is quite good for high beam but sometime i need low beam as well & cant keep low beam+ Holding pass light all the time while travelling at night (Light spread is much better with this combo)

Re: CBZ xtreme / Hunk

First up, good on you for showing such enthusiasm towards your bike that you do all these replacements by yourself.

Second, mine was more of a thrashing sound. A very loud, violent sound that was just too bad to ignore. That was due to a dry head.

Even now, there is a little sound that is due to the crankshaft bearings being worn out. The mechanics say that getting the bearings replaced will fix the issue once and for all. Perhaps you should get that checked too? Also mention the kms run, it will help in diagnosis.

As for me, 45000km up.

Just one annoying thing now, I get a mild squeaking sound from the left side of the bike while riding. I thought it was dirt, but the sound persists even after a wash.

Brake pads were also changed recently. Had to do it at the showroom since I did not have the spares and the front pads had completely worn out. Cost me Rs. 360 for the pads and Rs. 92 for labour.

EDIT: Just watched the video. I have a very, very, very similar sound from my bike. Would love some answers.

Also, to add, I see that the new Unicorns have a 163cc engine. Since we are always looking for more power, I am thinking if it is possible to swap the bore from the Unicorn 163cc to the Hunk/CBZ series. Since the engine is basically the same, this should be a reliable power boost for those looking for it. Moreover, you can be assured of reliability and availability of spares as well. Compared to the one from Race Concepts.

Re: CBZ xtreme / Hunk


Thanks for the concern!

Mine has run 33K Odo, bought it second hand (100% stock condition). Though I ran 10K since I bought, there was no noise at all, but it had timing error (black smoke & jerking @ higher speeds) The cam wheel was one teeth forward/advanced on TDC position (by some idiot mech). So I set the cam wheel to factory neutral (parallel to head surface) Since then Im getting this sound, no matter what I do, sound is not going.

So it appears, you, me & many more people have this problem, but there are no specific answers yet I have blown a lot of money (around 8K) for this, and still no answers yet I have changed new components: Camshaft, Rockers, timing chain & guides, cam wheel, tensioner, Oil pump & gear, many types of engine oil, have done head valve lapping with new guides/valves.

We can also check for crank bearings. I will open the engine myself, but it requires LOT of time, effort, tools, money etc also, crank bearings will not wear out so soon (if the bike is in stock condition) crank bearing worn sound will be "grr grr grrr" and bike will make huge vibrations. But in my case there are no vibrations anywhere at all. So I am waiting for help


Please dont swap Unicorn 160 Bore/piston even if it fits our engine. 160cc bore WILL stress/pressurize/damage our engine crank, pushrods & all components inside the engine. Thus damaging our engines badly. The new 160cc engine has more capable/advanced internals to support 160cc power generated by the bore.

Re: CBZ xtreme / Hunk

Ashwin is running on 165cc bore kit by race concepts in his hunk for some long. He had no issues like you mentioned. So it is possible to swap uni's bore as an alternative to rc bore kit. Waiting for [MENTION=28527]sibun[/MENTION] bro to respond [emoji4]

Re: CBZ xtreme / Hunk

Dont forget that Ashwin faced many side-effects after installing the 165cc kit. His crank bearing are beginning to fail slowly due to increased load from cylinder.

Its simple physics my friend. Mechanical components are inter-dependent & engines are well designed by carefully calculating all factors.

Re: CBZ xtreme / Hunk

Yes i know. But i don't think 10 cc hike will make the engine in an unsafe operating condition.

Re: CBZ xtreme / Hunk

Looks like new Unicorn engine is a completely new engine platform from Honda and not a bored version of old 150cc. The complete engine unit looks different and it looks similar to Honda's own 110cc engines of Dream series bikes.

Re: CBZ xtreme / Hunk

Head looks different than our engines and the fins on bore are of a circular shape on edges. Looks completely different.
Not sure about the mating surfaces. Need a closer look to say if it is possible or not