re: CBZ xtreme / Hunk

Well, I decided to get my engine oil changed finally today.

I'd gone to Motor Cycle Components, official Motul dealers today. I'd gone with the intention of buying the 3000 4T 10W30 or the 5100 10W30. More inclined towards the 5100 because it was Semi-Synth. But unfortunately, they didn't have stock of either and no oils in the 10W30 grade from Motul for now. 7100 was 20W50, so out of question. Only option left was 10W40 300V, I considered it a bit and took the plunge, cost me 920. MRP was 985.

Apparently, there is a new 5W30 grade of 300V coming apparently according to the Motul India Facebook page. I guess this would be more suited for our bikes?

Anyway, I got the engine oil changed at the mechanic I got the bike serviced at a week ago. Mohan Automobiles, my mileage before I changed the oil, with a 4000km old Hero Honda OEM oil shot up to 44kmpl using the 15T sprocket and Joel's Big Bore with only runs inside the city.

Coincidentally, I also happened to go on a 120km long ride today. The true essence of this oil is at high RPMs, at speeds above 100, the bike usually vibrates a lot, but with the 300V, it felt amazingly stress free. I am really impressed with this oil and hope it lasts 7000km as they said as 900 rupees every 3000km is quite heavy on the pocket.

Also this would be the first time I've gunned the bike after getting Joel's big bore. I've a question in this regard, the bike even before the Big Bore upgrade never used to get to the 9000 RPM mark, why is that? Even today, the transition from 60 to 117(My eventual top speed today with a pillion on board and very slight incline, no crouching) was seamless, barely took any time. But only during an incline did the bike hit the 9000 RPM mark, before that, it would hover around the 8000 RPM mark. Is it because I had a pillion with me?

Overall, Joel's Big Bore, 300V and Mohan Automobiles, thumbs up from my end.

re: CBZ xtreme / Hunk

Maybe it was because of pillion, try single ull reach top speed way faster, please write a review on the bore kit, no hurry though I won't be getting it for sometime anyway but just want to keep it as an option.

re: CBZ xtreme / Hunk

That is the rear wheel cush drive . The cush drive was invented by Royal Enfield in 1912 for use on their 425cc V-twin .

re: CBZ xtreme / Hunk

Review on the bore kit will take a little time, but for now, I'm glad I got it done. The way the bike went from 50 to 117 was outstanding. That is with the added load of the 15T front sprocket and a pillion. With the stock sprocket and stock bore, I had to crouch and wait for a long inclination to even get to 114. To reach 117 with this ease was truly outstanding. Reliability, will take a while to establish that fact. but after a 120km high speed run, I am almost convinced.

But the 8000 RPM mark, I'm not so sure. Shouldn't the engine be at max RPM when the throttle is fully open regardless of the pillion's existence? :P

re: CBZ xtreme / Hunk

Take ur time bro. the engine would reach Max rpm with pillion but it would take a while to get there and u need a inclined or flat long stretch of road.

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re: CBZ xtreme / Hunk

You try that in 4th gear, because I think either you over geared it with 15T sprocket or lean mixture for big bore.

re: CBZ xtreme / Hunk

It may be as you said due to pillion weight , i too feel loss in power when a person sits in back , as i am habituated to drive alone . Another reason is that bore is not free revving at this moment and will require more kms , i have done 5400kms on stock bore and it takes lot of time to hit 9k whereas Sibun's extreme hits more easily . Third is you might be running lean or rich carb afr , this you can re adjust and test again .

re: CBZ xtreme / Hunk

Okay, the cylinder head has started leaking again. Got the cylinder head gasket changed just 800 kms back. What is wrong here?Very disheartening it is :@

And, also today went on an offroading trip in a forest and a swamp. Needless to say, the Xtreme doesn't like it there.


EDIT: Went to SVC today. Both the service manager and mechanic who had fitted it were not there. Other guy said "theek se bithaya nahi hoga"
Going back tomorrow again. Phir se naya kharidna ko bolteh shayad.

EDIT2: Went to SVC today, got it changed finally. This time it was done properly, they removed the tank and then the engine head. Last time it wasn't. Big fight ensued when they charged me for labour. "Ghantah, you just just accepted it was your mechanics fault, why charging me again" Ultimately ended up paying only for the Gasket. Also, these are not available in single now? They removed one from packet of 10.

re: CBZ xtreme / Hunk

Do not go for that warranty scams as they are trying to bind you to their service station. And even if you miss the service by a single day for some reason then warranty will not be applicable. In my case in january a service was due and i was busy in fifteen days training of SBI, and now the supervisor says you will not get warranty. I had a fight as i wasin training and i have the proof and also career is important but he was adamant, then i just stopped going and serviced my bike on my own, running much better than new.

You are welcome to experiment. I am not anti 10W 40 as i am using veedol super swift in my Joy, but extreme doesn't like. You are welcome to experiment as you still learn a lot when you experiment on your own.

Man, give some intro about yourself. Regarding Hunk and extreme although they are have basic architecture but they are different in many ways. Some of these are:-
1. CBZ seating position is sporty, it has rear set footpegs, and clip-ons are designed to be making the riders slightly inclined to the front. On the other hand Hunk seating position is commuter with straight sitting position. The hunk is slightly more comfortable.
2. No doubt Hunk is the best style of Hero but i like Extreme style because its seat is longer and also bike is taller. Both follows a different style philosophy as Extreme is designed to look like a horse ready to race while Hunk is designed like a bull ready to charge.
3. Rear seat of extreme is supreme comfortable or the best among split seats while hunk rear seating is cramped.
4. Both share same engine but their CDI is different, Hunk initial pick-up is more but extreme has better top end. Also extreme returns more mileage. In most magazines i have seen top speed of hunk and extreme differs by 4-5 kph and also extreme climbs rev much quickly. I have hit a top speed of 119 kph in 15T sprocket and 117 kph on stock sprocket and all are real world speed measured by GPS and speedo is damn accurate as new hunk/extreme share same sensor and wheel size of ZMR.
5. Handling of extreme is more sharp than hunk and feels less bulky and extreme is more taller.

Regarding top speed then let me tell you that at 3.5k only do not try to test top speed, run it for another 3.5k and then test. Also 10W 40 when heated affects top speed and do not let the engine rev quickly. Also check your air-screw ratio as i think you are running rich. Let me tell you that extreme runs 128 main jet and a slight rich slow jet setting will maifest itself too much rich and full throttle opening. Another reason is that with pillion weight will increase and bike will rev late. Ours run CV carb and i very well know the difference in CV carb and slide carbs, as my joy has slide carb and my extreme has CV carb. In slide carbs you pull the slide with your force when you twist the throttle so fuel is delivered with your throttle opening, and thus bike pulls hard irrespective of load, but in extreme even if you twist the throttle then it will open the throttle plate and slide will increase when engine rpm increases. So revs building get late with load. Although my joy is less powered than my extreme but throttle response is quick in my joy thanks to the slide carb. So that is one reason.

Next is that Hunk has a more upright seating position which is less aerodynamic and thus rev doesn't climb till redline soon. Extreme is more sporty and riding position is more aerodynamic than hunk so revs easier towards red line. The importance of aerodynamics i knew when i rode my friends first model extreme which has been modified with R15 fairing. Man that bike was pulling towards 10k rpm easier as that fairing was giving it more aerodynamic stance.

Next your air fuel ratio as you are running big bore so you will need more air. What you do is if you have a friend who has karizma then borrow his carb and use your main jet as karizma runs 125 main jet and extreme 128. Then check how well engine is pulling.

Lastly borrow a extreme CDI and test. But my advice would be to wait for some more kilometers before doing experiments.

re: CBZ xtreme / Hunk

Hi Sibun,

Its me again(I had filled up my bike with 20w50 oil, remember?). Now that I have drained that and filled her up with HH 10w30, I am still having a little bit of an issue. For the first 5 to 7 kilometres she feels free and normal, but thereafter she feels a bit heavy, as if she is getting tired or something. Could this be the after effect of that earlier oil? How long before my bike returns to normal? Now I am really worried. Please advise. Thank you.

re: CBZ xtreme / Hunk

[MENTION=46224]virendra[/MENTION] Sorry to poke in middle , but i would like to say something , as you have drained old oil , only very little amount say 30-40ml remains which cannot cause any damage , regarding bike feeling heavy , check wheel rotation for freeness . Also check chain for lube . Is your airfilter clean ? If not clean or better change at 10k kms . Check spark plug for wear and if it has done 8k change it. If you could tell more about heaviness it would be better .

re: CBZ xtreme / Hunk

Hi Rohit,

Any and all help is appreciated buddy. I checked my wheel and it is rotating freely and the chain is well lubed as well. I must admit that my spark-plug is older than I can remember, and the air filter was probably changed more than 10k kilometres ago, so I will change both of these next saturday. The heaviness is the bike feels sluggish. The Engine doesn't feel free, it feels heavy. The pickup is still fine, but the bike doesn't feel free. You know the butter smooth we are supposed to get on an xtreme, I don't get it now and not sure whats bothering her. Can you suggest anything? Thanks Buddy.

re: CBZ xtreme / Hunk

Anything like the bike revs but its not translated to the expected speed?
You may probably check the clutch setting.
It would be good to report the engine RPM at 50km/h on 5th gear.

re: CBZ xtreme / Hunk

This happened with me too , mine was leaking oil from neutral switch and they changed it i had to pay for it , they said it is a electrical component which usually fails .The problem was with a simple O-ring which was damaged . Next visit i talked to Workshop manager and head mech solved problem in a jiffy also did a top-up for free. Yes gaskets are now coming in a bundle of 10/20 piece packed.

Yes change them , a clogged AF will result in poor mileage and bad pickup. Same implies with a spark plug too. How much your bike has done btw ? . If it has crossed 30-35K kms consider de-carbonizing head and polishing valves.Also if carb isn`t cleaned in last 15K it would be advisable to clean them too . I will suggest replace AF and Spark plugs and revert back here . When was fork oil changed last time ? , ideally after 10-15K we should change them , According to sibun Motul oil is best for fork . I am using Waxpol oil in my splendor and it is also good.
@all
Recently my friends and me went for a drive in NH-6 , 2 karizma , 1 CBZ , 1 hunk and 3-4 Splendors . The hunk owner asked my Xtreme for test drive as he wanted to try new xtreme. His`s and mine bikes were bought at same time and maintained almost equally . When he drove bike , he was blown away by how Xtreme revs after 5K , and after a session of 70-80 kph drive he finally gave following conclusions
1. Mine`s throttle response is way better
2. Climbs after 5K with ease and cruises effortlessly at 70kmph
3. vibrations are present at 3.5-5.5K rpm only

These compliments just made my day , that moment i remembered i tuned carb as [MENTION=28527]sibun[/MENTION] said and i am quite happy that i somehow got AFR right which is resulting in better performance and mileage too.
Also when he heard my xtreme`s mileage he asked me to tune his carb too . I am getting 48-49kmpl under following riding conditions ( 60% city under 50kmph + 20% highway(65-70kmph) + 10% Stop go traffic +10% Bad roads )
This mileage for me is satisfactory as compared to 35-45kmpl before.
These bikes just glide over smooth roads and give true pleasure of driving , i am glad that now i dont regret my purchase of buying CBZ

re: CBZ xtreme / Hunk

Hi Satson,

I checked and she reaches 50 at 4k rpm and 60 at just under 5k rpm in the fifth gear.

[MENTION=7005]Rohit[/MENTION],
My bike has done 31800 kilometres. I did get the valves changed about 800 kilometres ago, they got damaged due to poor quality petrol. I also got the head decarbonised. I will get AF and Spark plug changed immediately. Lets see how that affects her. I haven't had the fork oil changed in a while, so I will get that changed in her next servicing, which is 1200 kilometres away.

Thanks for all your help guys.