Re: Honda CBR 150 R

nothing to worry i guess. Even mine has the similar RPMs, around 1.8k.

Re: Honda CBR 150 R


I don't think the idling rpm will depend on whether the engine is cold or hot. rpm of an engine depends upon the amount of fuel that is injected into the engine cylinders and which is controlled by us through accelerator throttle. a petrol engine never gets hot enough to burn the fumes of fuel and air mixture in it unlike a diesel engine which will give better fuel economy when it is hot than when it is cold. hence diesel engines are started earlier to get warm a little before starting the ride.

in petrol engine fumes of petrol and air are burned through spark and the range to which the flames get propagated. only when engine is totally cold(early morning cold) and you are starting it for the first time then choke will automatically get on and higher idling rpm will be shown but that will be hardly for 3 or 4 minutes, after that the idling rpm shown will be your idling rpm whether engine is cool, warm or hot.

I to have a cbr 150r and i too think tha the idling is higher than it should be....if i release my clutch slowly at first gear, the bike will start moving forward at a good speed, where u can lift ur legs!!! , which is not good, idling rpm should be enough only for engine to be alive and other electronics system to be supported, if one try to release clutch and vehicle moves on that idling fuel supply, that means that excess petrol is getting wasted. vehicle should move only when accelerator is pressed. i made similar observation in my car also. guess it is common to leave idling rpm to bit at higher end in FIP engines, remember i m not talking about petrol engines that use carburetors.

Re: Honda CBR 150 R

Guys, what wattage is the headlight bulb? The manual says 35W but I read almost everywhere that it is 55W. That's confusing.
[MENTION=6072]Tarun[/MENTION]- In car it is helpful to have an idle which allows the car to move without the need of accelerator, in reversing and driving uphill in bumper to bumper traffic. If you reduce the idle of Cbr, engine will become sluggish, that's what I think, very less low end torque.

Re: Honda CBR 150 R

CBR150R is a high rev engine and short stroke one. So it should be in the 1.8k range. Once I started the bike after two weeks and the idle rpm shot to 2k during cold start. Then after 30 seconds, it came down to 1.8k
@ Tarun,
I think the idle rpm is perfect. After all, Honda does know what to do with their bikes. And the mileage of the CBR is commending for such a high rev bike

P.S: I thank Xbhp and its members for making me to note even the slightest details in driving!

Re: Honda CBR 150 R

There are some differences between commuting vehicle and performance vehicle. We have a huge torque in lower rev range in commuting vehicles but in performance machines we need a high power delivery at higher rev ranges.

So generally we get a low torque at initial rev ranges in performance bikes.. But as baby blade is intended not only for tracks but for daily usage also, it requires some power in initials. That's why they kept a little more idling just to make the bike a little easier to ride in traffic.

And as far as my knowledge, the idling also depends on the quality of fuel a bit.

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Re: Honda CBR 150 R

Any one who can confirm what is the wattage of the headlight bulb in Cbr150r? Manual says 35W.

Re: Honda CBR 150 R

Its 55w h4

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Re: Honda CBR 150 R

I love my baby blade....no doubt in that.....but sometime i wonder if the idling rpm could have been lower...cause as a normal indian ...i too worry abt petrol consumptions...so whenever i stop i have generated a habbit of switching off the engine. but now i m in doubt whether this regular switching off and on in traffic will harm my bike.....in someway or other....who knows just to save some bucks on petrol i may do some bigger damage....very low chances...but still.....and the most trusted thing in this bike is honda's engine....which i m always confident while mentioning among my frnds ....that though there are some small shortcomings.....i have what u guys(my cheap pulsar frnds) can never have unless u buy a honda... :P

Re: Honda CBR 150 R

Switching off the engine in signals is a good habit indeed. But one have to be aware of the time for which the engine needs to be killed. Generally i turn it off only if a signal is closed for more than 30secs. If you you turn it off for less than that time i don't think it will save any petrol.

And in very slow traffic i prefer my engine to be on as the radiator helps it to keep the temperature stable.

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Re: Honda CBR 150 R


I never switch off the engine when I need to stop for a signal in heavy traffic. The radiator will be doing its duty. The bike is built for touring and not for heavy commuting. The bike gives very decent mileage during highway rides.


P.S: And if ur really concerned abt the fuel savings, you should have considered the Unicorn!

Re: Honda CBR 150 R

I own a Pulsar mate but that is what I found to be the best at the time I was getting a bike.

Now coming to the point of switching off, I use my engine kill switch whenever I arrive at the signal where I need to wait for a significant time. Understanding that CBR doesn't have a kill switch, I would say that you can switch off the engine(by twisting the key to off position) when you are prolonging your stop. The thing which I see can get damaged is the lock area, so you need to be careful with that.


Its not completely true. It all depends on the owner whether he/she wants to use it for everyday or only for long rides. CBR has got decent power and torque in city speeds and the posture is comfortable. Any bike irrespective of its engine size gives more fuel efficiency on highways and less in traffic situations. Fuel saving tactics are good for any bike. It isn't wise to burn fuel unnecessarily. It isn't bad to be an efficient biker and saving fuel.

What Tarun is trying to do is have fun on the sweet CBR while being as efficient as possible.

Re: Honda CBR 150 R

Hello Friends ..

I have Green CBR 150 . Completed 1 year so all free servicing finished , 4830km on odo. This bike give me lots of problem. Fuel pump changed 3 times , Gear shifter 2 times. Rattling sound coming from fairing . Pick up n performance also bad . Honda service center is very bad .

Now i wnt to servicing my CBR (From out side )but confuse about Engine oil, pls tell me which engine oil is best for Honda CBR150 ?

Re: Honda CBR 150 R

Don't do that dude, you'll void warranty. Service with Honda only but a different service center. If bike is problematic you'll find yourself spending a bomb on those parts, right now they must have been in warranty?

Re: Honda CBR 150 R

How much warranty on HONDA CBR150 ?

Re: Honda CBR 150 R

First you say idling rpm doesn't depend on whether engine is hot or cold...

... then you go on to say only when the engine is totally cold... and the auto choke comes on... of course i'm talking about when the engine is cold enough for the auto choke to come on...

Even lingo wise my man a cold engine more or less means a totally cold engine... a cool engine on the other hand can mean a relatively cooler engine... engines are made for combustion... they are a heat generating process and engines run correctly when heated to the right temps... so use relativity with heat... not cold.

on a CBR the auto choke comes on if engine heat is under 'no-bars' indication.... you've got to give it a short rev on the throttle and let it settle to 1.6... else it takes its sweet time to run through default mixtures many times... whether its cold or totally cold or extremely cold or slightly cold.

A bike like a CBR meant for higher revs, has a shorter stroke is usually kept in higher idling rpms than their longer stroke counterparts... that is the reason these bikes are equipped with liquid cooling when big cc long strokers can do with just air cooling.

Longer stroke will also mean more internal momentum and crank return which aids in maintaining lower idling rpm... so people wishing for a lower idling speed and fuel efficiency will have to sacrifice higher end rpm. The CBR150r isn't a long stroke engine so lets crap that thought... the Unicorn however is .