Got the bigger carb fitted

Hey all,

Finally got the bigger carb fitted on my bike today. It was the UCAL one.

Immediately after fitting it the bike response seemed different. Even while tuning i could tell the difference.

The bike revved more freely than with the stock carb. Then took it out for a ride for the first time after fitting the BS29. Boy, was it wonderful.

The bike felt like a beast freed from its leash.

The feel was remarkable. Like the bike has released all the horses it had been holding trapped for all these days.

I could clearly feel the free flow air filter and exhaust at work. The whole setup was in perfect harmony.

As soon as you wrung the throttle the bike would lunge forward like anything.

With one twist of throttle i was already looking at speeds above 50. Only this time i consciously didn't touch 100 on the speedo.

But you could imagine how fast it would touch the 3 digit speeds. Quite frankly now i am unable to ride this beast below 70.

Not fitting the BS29 was indeed a blunder but now i can personally affirm the need for a bigger carb due to my personal experience.

In the end i am a really happy dog now and ever eager to stick out my tongue and taste the wind at every possible opportunity.

cheers...

Hi,

Glad to hear that your ride is now fully ready for more fun . I am just anxiously waiting to land in Mumbai and taste the true potential of this kit. My primary objective for going for this set up is more power at hand when i need it to overtake on a highway and also on a good road give it the beans and see what is the true nature of my FZ-X the way it should have been from the factory!!

Poor Joel is now busy haggling me to send my ride's engine head ASAP!! Thanks for all your patience and help bro..

So it seems your stock BS 26 carburetor was the main culprit hindering the overall performance. Noobs, as it has been already mentioned earlier, if you do intend to go for the BB kit, Volumetric porting and the mild lift camshaft, 29mm CV Carb upgrade is a must along with it!!

I hope our fellow mate Jonahmano also gets rid of the small niggles with his set up soon. If at all it is possible, do check out with your friends if you can source out a 117.5 jet for Jonah's ride. Make of the carb will be 29mm CV UCAL which is similar to both of our set ups. He just needs the correct jet size to get the fuelling right and then unleash the beast within it

Please do update us as you clock more miles regarding:

1) Any change in engine temperature and heating compared to stock.
2) Any flat spots post 29mm CV carb installation.
3) FE on sedate riding: this is to be checked only as an indicator for rich or lean tuning and not mileage hungry Junta!!
4) Any change in performance with using Speed 97 or likes of higher octane Fuel. Not by the feel of it but by the way you hit higher speeds. This will also confirm if our set up performs even better with higher rating fuel or else gives out the same output if we are running it on pump gas.
5) Any engine knocking, coughing, sputtering etc.
6) Colour of spark plug post installation of 29mm CV Carb.


Cheers,

Fun!!!

It is really fun to drive the bike now or rather more exciting.

Trust me, the moment you taste the true potential of this setup you would be addicted like anything to it.
It should have been this way from the start(factory). The FZ chassis can actually handle way more power than it is currently being offered with.

The devil of this setup was the BS26 from the start. So its amply clear that its a no-brainer to get the BS29 for this kinda setup.
Or else do the setup in two or three stages.

I am actually searching for the main jets required by jonahmano but in vain till now. Lets see if i get any good contacts.

Also today after riding some 15km i found out that whenever i halted at the signals the rpm instead of going up after hard riding, tends to go down and
ultimately the bike stalls abruptly. I need to constantly blip the throttle to keep it alive and kicking.

So i am suspecting lean tuning of the carburetor. Also because the early morning warm up of the engine is taking longer than usual.
And sometimes the bike stalls with a loud thud. We could attribute it to the semi forged piston but still not sure.

Will have to tune it again soon as i get some time from work. Keep you guys updated.

cheers...

Hi,

Increase the engine idling rpm to 1500 and then see if the bike is still stalling. Also check the clutch cable and settings. If the engine rpm still goes down.. then the idling jet needs to be checked or else the carb tuned better to make the AFR mixture stoich. More less lean tuning seems to be the culprit.. Your FE will give you all the signs plus the spark plug reading will let you know that you are running lean.

The loud thud is normal and also known as reverse cranking. It happens with stock bike too at times. With big bore the thud sound is much more apparent.

Cheers,

hello sir,
i am staying in pune,new to x-bhp and have a 2012 fazer.regarding the fz18 kit by raceconcepts i have the following queries-
1.how much change do u observe with stock parts an the ones from raceconcepts?
2.hows the low end torque?
3.is your fuel efficiency getting affected?
4.did u have to do ny other changes before installation of the kit?
5.if i dont gt the air filter and the FFE.jus the racing carb and the big bore kit.will it help in increasing the perfomance?due to budget and noise contraints i would avoid the exhaust and the air filter.
6.are these reliable?have u faced ny issue?
7.wich mechanic in pune is reliable to get them installed?
thnx in advance.enjoy ua fz18

Pulsar 180 UG3 has 117.5 main jet.

Couldn't stop myself and fiddled with the idling settings after posting the previous comment here last night itself.
Increase it to 1400-1600 rpm. Suddenly the roadside dogs started to take keen interest in my bike.

The bike didn't stall but cant say much now. Didnt ride it more. But the carb is definitely lean. After increasing the idling during a straight
stretch the bike felt like stop and go while the throttle was kept steady. The AFR needs to be perfectly balanced.

Didn't know that term reverse cranking. That's happening more than when it was stock.

O and i forgot to mention, changed the spark plug to BOSCH iridium platinum.


First, welcome to xbhp. Ride good and stay active here. And below are the answers to questions.

1. The change in numbers is about 4-5 bhp in Joel's words. As for the feel, there is a lot of improvement in reality from stock bike.
The RC parts fitted bike is a hooligan to drive if you twist the throttle hard and on sane driving its a real treat to still be ahead of others.
2. The low end torque has immensely improved. Just the blip of the throttle will lunge you forward.
3. I still didn't check the fuel efficiency. So cant comment on it right now. But it SEEMS good.
4. No changes need to be done to your stock parts to fit these parts. Just plug and play.
5. In my opinion even if you dont want the FFE, you will need the air filter if you get the head porting done.
Else i think you can get away by fitting the carb and just the big bore.
6. I haven't faced any issues till date. Although the duration is less so to speak. I still don't get time to ride the bike coz of work commitments.
7. Any knowledgeable mechanic you trust can fit these parts easily.

I hope i have answered to your satisfaction. Ask if have any more doubts. Ready to help you.

Yup, i know that. Didnt get it at a nearby showroom and also at the factory shop.

So i am gonna try ordering it. Lets see what they have to say now.

cheers...

Hi,

would advise that you get the tuning done by a good mechanic and not fiddle with the carb settings unless you know what you are doing. Wrong tuning or extreme lean tuning can be potentially dangerous for the engine.

When you crank the bike apply a bit of throttle and then see.. The bike should start without any hiccup. Don't try to crank it without the throttle. Once the tuning sets correctly and you clock more miles, she will start without the need of applying throttle unless the ambient temps are very very low and cold which all carb bikes annoy you during winters.

Cheers,

I am able to do mild tuning. Only if i need to open the carb then i visit my mechanic.
No worries. I don't do any over smart business with my bike.

The bike is starting without any trouble if given some throttle at crank. So, no starting troubles at present.

The bike has clocked very less mileage after the mod. So these small issues will persist until the mileage increases.

Still more abstaining to do from biking till 15th December. Work is pending coz of the lean Diwali period.

The mod plan was done coz i had less work and thought of taking advantage of it by riding the bike.

But now the story has turned and after the bike's been modded, the work increased. So i am looking forward to lean period again.

cheers...

Run-In on FS oil??

Hi All,

I had a long chat with abhimanyu31 regarding the tolerance measurements and other factors related to the RC kits that i have ordered for my FZ. According to abhimanyu31's calculations as he has already mentioned on this thread it would be a better idea to attempt run-in using FS oil with these kits unlike the general thought process followed by us all. Although, i will take a final call once i personally see it along with abhimanyu31 and then based on his measurements will decide whether i should do a run-in using FS oil or stick to mineral grade. Will also update you guys regarding which grade of oil will be used once the run-in commences.

I will also try and click pics of the dismantling, installation and details about what process was followed during the installation; in short the my usual blabbering.

Cheers,

RC BB kit improved performance....but by HOW MUCH???

Hi guys,

You keep talking about Joel's Big Bore kit, Free Flow Exhaust, and this and that, and describe your bikes using terms like "the beast" "smoking" " monster" , etc....etc...but: NO NUMBER!!! Only one little video excepted Joel himself riding a bike to 135kmh on the odometer, probably with tight fit full race suit, super-quick gear shift, fully crouched as the professional racer that he is, etc.... Seems to be 1- 60 in 4 sec, 0- 100 in some 9 seconds, and 0 -120 in 14 seconds, all that being very good indeed, but how accurate is the speed of the camera, the youtube video player (they sometimes skip some frames), etc... We don't know about the wind, the eventual declivity, ...

What about 400 hundred meters, one kilometer timings (easy to do with 2 partners with their mobifone), and eventually going uphill, etc...??? All this, of course, with the various levels of modifications: full RC mod, and partial with or without headworks, carbs, exhausts, etc....

No need for sophisticated equipment like what SHV18 has promised to use and to show us the results, since we could not reproduce the experiment. Others, like me who is a "little bit" far away could then try to compare with their own rides, as well as owners of stock bikes.

Would be great!

P.S.: I could not at the moment give you my numbers anyway: after having fitted Joel's "race" clutch springs, .... the clutch is slipping......while it was not with the stock springs, which I stupidly did not keep, so confident I was in Joel supplied items! How disappointing!

Its so much easier to do bench dyno's than actually film the proof.
This morning I had my GoPro attached on the top of my helmet, I was filming myself riding to KTL, Later when I went to watch the video I had forgotten to take the SD card from my laptop and insert it into my GoPro

Regarding Youtube frame rates, I was told on a GoPro forum that youtube limits max fps to 30, I tend to film on 720P 60fps.
Can't comment on speeding up of frames etc but you can do that with a simple editor.

Indeed correct Mik... 30fps is the correct accepted format of youtube.. beyond this you are just wasting your time and effort. I cannot provide any more data beyond what i have promised as mentioned before on the first page, Dyno?? sigh!! the search is still on with disappointing results.. That is the closest tangible data i can provide.

Besides, if the boys at PTR still show the enthusiasm once i am back, may be their independent review should give us all an idea about the true capabilities of a tuned ride.

Luke, i suggest to be in touch with abhimanyu31...may be he can help you troubleshoot the clutch slippage problem.

Cheers,

How can you even mention that, Mik, when you perfectly well know that there is not ONE such machine in the whole on Vietnam????
Let's be down to earth!

60 fps is for looking at half speed in 30 fps.
You know that I do documentaries, film editing and animation, so I know a little about this. What I also know is that the clock when watching any film on Youtube is not reliable. One may download a one minute video, and find out that it is played in 50 seconds....or 70! This is why I said that Joel's video, interesting as it is, does not give accurate numbers on the acceleration.

Just being nostalgic about my ride: FZ-X



. Its been almost 3 months since, i have vanished with her on a long ride...


Cheers,