okie cool, den i'l get a splitfire for sure..the airscrew in carb is jammed,yest only i got it checked by a mech,now its a headache to get that thing right.
dude, thats awesome man,how can u zip past a zma??its gr8.is tat possible on my cbz??do i have to change the cylinder kits??bore,piston stuffs to zma's???
pls tell me in detail bout it.

the airscrew in carb is jammed yup its a headache...Its possible on ur cbz also...Yup u are right u have to change cylinder kits,piston,bore,carb..Its better go and consult any bike modifier which is best over there and take his suggestions post them here than i will guide u up..But listen bike cnt be controlled easily after that...

OT, CBZ is a biker's bike. It is the only Honda in India with a short-stroke engine. It is the only Honda with 22 mm directly controlled Carb. It is the only Honda with 8.5 compression ratio. These are plain statistics. These themselves make the bike a free-revving light weight screamer as compared to other fast commuter or long-legged tourer.
Though it may loose in terms of performance in comparison of other big cc engines or tech savvy bikes but for the purpose of feel, it is ultimate.

If you stuff things from ZMA (cylinder, crank, piston, carb) it would become a ZMA, and not a modified CBZ, with characteristics of a ZMA.

The only easy thing would be to somehow increase CR to 9.8/10:1 and then add a matching cam. First is the easier thing and second one is a tough one. You can add cam of ZMA which has somewhat liberal Intake and Exhaust timings but still it is a trial and error method. The resultant engine may produce a lot a heat, aka, RTR and measures would have to be sought for it.

Fiddle with it and enjoy. But before, do a general assessment of the health of your engine.

Mine with jetting, air filter modifications, sprocketing, weight reduction, etc. have seen a true 112 kmph (my speedo is short).

@kunjalsingh--hmmm,ya dude i would love to make my bike more powerful,and i'l do it in sometime for sure..many people here are experts in cosmetic mods, i hate those mods,i need real performance mod experts,searching for them..hope i find one soon..
@Technician--man, what is this????u into r&d or wat??? and, how do i inc the comp ratio?? zma's stock cam will do na??how to solve the heating prob? adjust timing?
112 true speed is gr8 for cbz.. thx dude, reply asap

For the last point . i am sure that you have a brand new paint on the bike's engine. its just paint that is the reason for the smelling.

get your bike upjetted or just get back to the original filter even they are not bad

yup i agree with u desi sir...

@desideep-- nope, when it had stock silver color also i'd the same prob, i dont see the difference much..i've to upjet it i guess

@kunjalsingh--dude, how to solve my 2nd prob?? engine knocks in 2nd gear at low revs?? my freind had the same prob, he re-conditioned the con rod, but still its the same, so????

Hello, I am no r&d expert, just that my steed is quite old, available for fiddling, I have no fear of destructive testing.

As earlier suggested by many seniors, remove base gasket(the gasket between the engine base and lower part of cylinder) & use a good three rubber past (a rubber sealant) in place of it.

The bike use an already thin steel gasket perhaps 0.4 mm between cylinder and the head, and is powder quoted with a black material. Scratch this black material off, now the steel gasket becomes a mere 0.2 mm or so.

You gain approx. 0.8 mm or so for increasing compression. I have so far removed the base one only. The bike becomes torquey but difficult to rev beyond 7.5k rpm. With the first gasket you get a 9.5 CR and with second gasket modification, you get a 9.7/9.8 CR. Maximum 10:1 can be tried in hot and humid India with ordinary pump petrol. That is why CBZ is only 8.5/8.4 CR just to enable it to rev hard and rev sweet.

But I still feel that one needs a matching cam for any CR over 9:1. CBZ comes with a very restrictive cam. If CBZ and ZMA are exact replicas of CRF 150F (2002-2005) and CRF 230F(2002-2008) sold in US, then both are designed just to potter around with very good low down capability and specially designed to pass smog test and not to run at high rpm. We need some after market cam which is not available in India. Honda US specs are - {CRF 150 : Intake 6/32 and Exhaust 36/5} {CRF 230F : 10/40 and 35/10}. Please search for some cam degree terminology to understand these numbers. I cannot explain these lengthy topics here.

Put Amibition's rear sprocket on CBZ and your ratios become so wide that the fifth gear becomes hyper overdrive capable to run the CBZ at a true 100 kmph @ mere 6.6 k rpm in fifth gear. No fear of continuous high rpm damage to engine.

Again a word of caution. These testings mean - Destructive Testing. So you are on your own. No guarantee. No warranty. No assurance of any kind. To give a perspective, piston-valve clearance is a mere 1.3 mm on CBZ out of which we seek to reduce another 0.8 mm for increasing CR. Honda is a marvel so far as engine specs and tolerance are concerned.

dude, the gasket u talking bout has provision for timing chain and piston rite??if tat is removed, oil will ooze thro it badly. even if a rubber based gasket sealant is used,due to excess heat generated, the sealant will get worn off, and the cylinder wont seat properly na??
and, what have u done to cams??u said its not available in here, so what mods u've done exactly bro???
without inc CR,can ambition's final drive do the magic???

I Quote:
CRF 230/ ZMA cam is slightly liberal only. No performance cam is available in India and I have not yet done any mod to my cam. I am speaking from my experience that with CR raised to 9.5, the bike becomes quite torquey in low RPM but difficult to rev after 7.5 k rpm.

But google about "how to modify cam" and 'reducing base circle of a cam to modify a cam" and you can get an insight on the matter. This cam business modification is a very very lengthy difficult subject and still it is a destructive testing.

*acchoo*

I thought you must be intrested in knowing about this

Import route is always open but not quite tenable due to cost considerations and time consuming with lots of uncertainties. Anyway, if someone wants to try, the route is open. A full decent kit with cam springs carb cylinder piston can be yours for $ 800-900. Go for it if you want.

Also, these imports are too high in CR 11 to 12.6:1 which would make your bike a push start bike and might also bust your engine on the first kick in hot India with poor petrol quality.

By the way, an imported Performane cam can be yours for a mere $ 150 plus shipment in comparison to a genuin Indian ZMA cam for a mere $ 17.

Then i'l just inc CR to 9.5 like wat u've done and put in zma's cam..noways am goin for imported.800$??? i'l be comfortable with zma's.. :-)

Happy fiddling and modifiying. The learning curve of modifications itself is full of enjoyment. For some, paying a decent amount for a big expensive brand and let others do mod for you, is an easier route. Sometimes, you get desired results sometimes, you don't. Post your experience in future.

ya sure.. well said bro. i'l keep posting for sure..
can u tell the remedy for my other probs?? engine knocks at low revs??