I guess a new Jet would have to be bought and that needs to be fitted directly in the carb...no modifications required for it..!!

Hey guys,

Just my 2 cents, but first don't remove the air filter & run the bike as the filter is there for a reason which is to keep the dust & other contaminants out of the engine. Dust & other such things can seriously harm the engine, so don't try out this any time unless you want to enjoy a short stint with the bike.

Secondly, about upjetting, in theory a free flow inlet (through a filter) or free flow exit (exhaust) or both would increase the volumetric efficiency of the engine, meaning as many have already said here that the engine breathes easy now. But when it breathes easy, it pulls in more air & so the net effect is that the air-petrol mixture is disturbed causing a lean mixture (less petrol). You get a hotter running engine due to this.
So upjet the bike by changing the jet sizes, or needle position, or the size of the throttle slide cutaway, or the the needle taper.

As for a lower mileage, that same amount of fuel is getting used up quickly as due to better air flow through carburettor & hence better uptake of petrol. Plus, since the engine breathes easy, more mixture enters the engine per unit time.

Please correct me guys if I am wrong.

Take care.

Happy & safe riding,
Prakhar

your theory is quite reasonable !!!.

Fully Synthetic OIL FOR KARIZMA

Hi Everyone,

I have a 2006 Karizma.
I have K&N air filter, bigger jet and free flow exhaust.

I wanted to try synthetic engine oil for my bike.

Can anyone help me as to which oil I should try??
I drive the bike on the higher ranges of RPM.

Also I read somewhere that the for older Karizma(ie mine) the recommended oil is 10W40 and for new one it is 10W30.

I am not sure. Please suggest the grade and the brand of the oil.

Thanks in Advance

Correction - for older Karizma 20W40 is recommended. For the older one, it is 10W30.

Power 1 Racing would perhaps be best for you... though it is 10W40 and dosen't exactly meet the spec. But better than Motul, cus AFAIK its available in India only as xW50 something. Dunno about Petronas...

Oil for Zma

Thank u guys for your advice.
I was also thinking of Power 1 Racing.

Also I have heard that the oil change duration for the synthetic oils is almost twice than the normal mineral oils.

I am using the jet of CBZ I guess as it is bigger than that of Zma.

I have taken very good care of my engine and all the Additions that I have made to the Bike (K&N, Bigger Jet, Free Flow Exhaust) has actually blended with the engine pretty well. This time I calculated my milaege. It was 36. Considering that I ride around 80 - 100 km/hr in City I think It is very good. But I have Smooth driving style, I guess it can be also one of the reasons for this this kind of average.

Hi rachitkdogra,

Hey buddy, about the engine oil, apart from Motul or Power 1 Racing, you can also look at Mobil 1 (motorcycle specific). Their address is :

Exxon Mobil Lubricants Private Limited
3rd Floor, Tower A, Signature Towers
South City-1, NH8, Gurgaon - 122001 (Haryana) India

Also, on another forum I have heard about OWS lubricants, & people have good opinions about them. These are available through a shop named Performance Zone in delhi. Let me know if you need their numbers, will PM you.

OT: I can see you sitting on a litre bike, most probably a R1, is this photo from some place in Gurgaon, & if yes is it some mechanic's place.

Take care.

Happy & safe riding,
Prakhar

Nopes dude, go with the same oil change schedule as mineral oil... UNLESS the brand you go for mentions specifically that its an extended drain oil, and mentions how may km you can do on it.

Thanks Prakhar.

Will give you a call when in chd.

Anyways Do you know about the change duration of fully synthetic oils??
I have heard that its around 8K kms. Just wanted to confirm!!

I have used K&N on my zma for over 40000kms now
in the beginining on stock jet,and now 140.

With the stock jet,bike runs pretty lean,so the mileage infact increases,i got 46kmpl once on a long ride,down side is the bike heats up which is not good.
after rejetting i am getting around 26-27kmpl

Hi,

I am using a 135mm jet in my Zma.

Hey rachit,

Buddy, the synthetic oil change intervals are said to be around 4-5K, at times even 6K, but then I would still always prefer a mineral oil, because its always better to put in new oil every 2K kms instead of running the same oil for 6K, & paying a price at least thrice that of a good mineral oil.

The rest is of individual preferance.

And hey, it will be good to hear from you, give me a call sometime.

Take care.

Happy & safe riding,
Prakhar

Thanks A Lot Buddy.

Will keep that in mind.

Take Care

Dudes, its not just for fully synthetic oils. Non fully synth oils like Gulf Pride and Elf Moto, etc., also have drain periods of around 5,000 - 6,000 km in normal use. HH also specifies 6,000 km drain period for its oils.

Buddy, yes the drain intervals specified by the company are similar figures, but then I really haven't been able to find an oil (non-fully synthetic) that can last this much in the true & practical sense.

The rest as I have said earlier is about individual preference, though I would always prefer my own skills to decide when to change the oil rather than putting my faith on what's written on the bottle.

Take care.

Happy & safe riding,
Prakhar