Mission Accomplished 150 to 180cc

Thanks NANOTech for the compliments.

But actually I did not do anything, I was just using some(very minimal) of my knowledge in getting this done.

Also if we would have known first hand that we would need chain tensioner of rtr180, we would have got it ordered since we had so much of time and everything would be in place & bike would be fired the same day.

You will not feel the difference in performance so soon my friend. Once your running in is done & you open up the throttle & see those other bikes in your RVM's you will be like this & they will be like this

Anyways it was a good lesson learnt and a good experience.

Someday I will get porting done from that Uncle, if I happen to keep my Fiero

Vishal

@Nano :- Why don't you get rid of the cat con from the F2's silencer, the bike should be breath better after that.

@nanaotech

congratulations!! :d.

Guys! ... can a similar feat be acomplished on my aging classic Fiero too?!? Looks like a good upgrade ... What's the cost Nano bro? a break down of the parts and cost would be really helpful.

Well I might not do it right away, since I have a new piston hardly 800 km old. But maybe next year. It will all depend on Nano's positive or negetive feedback.

Cheers!!!

Here you go Chief

RTR 180 block piston : Rs.2375/-
Cam tensioner : Rs.150/-
Shaving of the piston to make sure the Outlet valve sits in :Rs.50/-
FZ Handle : Rs. 150/-
NGK GPR7E plug : Rs.130/-
Sprocket set : Rs. 750/-
Sprocket bearing : Rs. 138/-
Other misc parts : Rs. 500/-(Oil, bolts etc etc)
Coldrinks (To beat the heat) :Rs. 20/-

JOY : Priceless

@NANO: Correct me if I am wrong here.

Chief: By the time you decide next year for a 180 upgrade, we might even have a 250 Apache

Vishal

@nanotech

First things first.The checking to see whether the valves touch the piston or not is mandatory and done by any respectable lathe guy worth his salt.That's the reason the replacement pistons come with thick top layer so that the valve recesses can be milled ,based on the engine it's used for.These are things which will be taken care of by lathe so no need to bother about it at all.Here the charges include all these things.By the way did he check the head?

Yes,the valve will be more towards the center as the new bore is bigger.

Porting was a must to increase the flow capacity of the head.It can be taken up next time.

The valve recess on top of the piston is changed once again if you opt for bigger valves at a later time.Though you can do the same thing as me .Which is to wait for the 3 valve twin spark plug RTR to come so that its head can be installed on our bikes.

Regarding power.Your engine will have a increase in torque .But i would suggest you get the JETTING done as soon as possible.Otherwise you will harm your engine.!!!!

Power is nothing but the sum total of the changes made.

1. Get the jetting done.
2. Porting
3. carb(i will give you the feedback about 32mm once i get it installed)or you can blindly go for the tried and tested 29mm carb.
4. Do something about the exhaust.Trust me ,f2 has the most muffled exhaust of any fiero/rtr bike.Which is not good at all for top-end or mid-range(i'll tell you about what i've done in the next post).

@NANOTECH

Let me make this clear.

Bigger bore = top-end increase as the power band is shifted up the rev range.Bike revvs easily and higher than before.Longer engine life.Less stress on reciprocating parts and rotating parts.

Longer stroke= Initial and mid-range increase as the power band will come down the rev range.Bike wont revv at all and will be stressed if revved.Shorter engine life and more stress on reciprocating parts and rotating parts.

Your bike is now over-square.Meaning rev the hell out of the bike.But still its not as over-square as the RTR 160 nor is mine.So you can imagine how much you have to rev the RTR 160

DO THE JETTING ASAP !!

@NANOTECH

Now i am glad that you are feeling the real handling capability of the fiero.Bike not only feels sportier it looks the part too doesn't it ? all thanks to a lower handle.

Its a good investment.Imagine if we sell our bikes we would be lucky to get 10k .WERE AS IF WE DO THIS CHEAPER MODIFICATION THE BIKE'S POTENTIAL COMES OUT AND IT CAN STAND TOE TO TOE WITH ANY MODERN BIKE WHICH IS SHACKLED BY PRESENT DAY EMMISION NORMS WERE AS OUR BIKES CAN ENJOY THE PREVIOUS EMMISION NORMS .Hence we can play around a lot and make the fiero engine's potential come out which any respected tuner or racer knows about.

Bottom line ?Upgrade rather than selling it.

@gagandeep @Vishal

Guys trust me compared to what my bike had to go through ,the work you saw is nothing more than a bolt on job

Yeah considering that it was nano's first time it might have seemed like all hell had broken loose!!That's understandable.

The thing is, most of the time what anyone needs is a mech with some common sense to get modifications done,imagine if you had gotten the same done at a tvs dealer or for that matter even asked whether it's possible!! They would have chewed your head off and sent you home with a apache 150 bore .They are major block heads with rare exceptions.
When my bike was being re-built i had more tech know how than the mech (theoritically) .But he has a good head on his shoulders and there were no RTR180 packing and gaskets available at all at that time and the block heads at the tvs said that the RTR160's gaskets cant be used!!Then the mech modified the gasket to install the engine.
So small things do crawl up when such modifications are done.It's expected.
Once again as nanotech was new to it ,it must have at times felt like a hopeless situation and i am sure vishal being there helped matters.

Nice write up nano and yes you have maintained your reputation well.
Don't remove the foam till jetting is done.

DONT RUN IN THE BIKE WITHOUT JETTING OR AT LEAST WITHOUT RICHENING THE A/F RATIO

CHECK THE PLUG AND I AM PRAYING THAT IT'S NOT PARCHED WHITE IN COLOR

================================================== =====

I have never felt like selling my Fiero ... The comfort it gives me knowing that it is one hell of a reliable machine and will never let me down. You are 100% right my bro... "Upgrade rather than selling it" is the way to go about. I am just amazed at the potential of Fiero ... it's capacity to be upgraded... and excited by just the thought of it.

Cheers!!!

Yeah chief bro Think about it,even after paying 72,000 for a new 150 bike and god knows how much on top of it as interest on the loan,what will you get?? ZILCH in terms of improvement in performance over our fieros.!!!!. That is ,most of the time spent by the engineers is devoted to ,as to how to make the new bike's engine meet the new emission norms !!
Were as our bike can be made to an 180 or even a 200 as it has the potential.That too for the price of a performance filter !!!!

HELL FOR 4.5K WE CAN BUY A USED RTR ENGINE&GEAR BOX AND PLONK IT IN OUR BIKE'S CHASSIS !!!

very well quoted price vishal, you didn't miss a thing, labor was 700 bucks though..

an update..

i rode my bike today, at a place i had to overtake a bus, so i revved it a bit, as soon as the bike reached above 4k rpm, it radically transformed into a monster...
the torque was spine cracking, so was the sound..
it HAS turned into a monster, but i didn't ride it hard as its run in period..

i met a friend and rode for a while with him, as i was explaining him my upgrade process, and was excitedly telling him my heavy torque experience, he asked me to revv it and show him the feel, i did so and guys the front wheel reached the sky ....
i didn't even touch the clutch, and was in second gear and it wheelied quite long..
maybe as i weigh 47kgs and my friend weighed 75kgs...
but still it never happened ever before..

the sound turns different on revving hard, however i never did it for more than 3-4 seconds..

but i am facing an old problem now..
the carb is pissing petrol and its literally flowing it tooo much, even when the bike is running.
my carb is damaged so i believe i should get it replaced ASAP maybe by tomorrow itself, since gixxer still hasn't got a hang of BS32, a BS29 will be a good buy for now..

i wish to keep the stock exhaust, if mandatory, i might change it..
i do feel the difference but i believe run-in is not showing a right picture, time will show it right..

i tried and old method of low end torque, if at 15kmph and on 4th gear, and if i revv, the bike knocks..
so low end has gone down a bit...
but i believe something better up there on higher revvs is waiting..

the compression increase seems quite a lot, as those kick backs has become very very strong now.
it will almost take my leg off..

bike does start on 1 kick if carb isn't leaking fuel.

i want to buy the carb..
tell me guys, BS29 from bajaj, or BS29 from TVS??
the price too.

besides so far all's well, but i do miss a bit of the low end, bike seems to be more pronounced now, as its almost reached 100 kms now, time will tell better.

@ chief

dude, the total is 5.5k, and + the carb, but as your carb is fine just get jetting done.
now you know in detail what all needs to be done, and i stayed with previous bore for 5k kms, go for it,
but i still strongly recommend that GO FOR THE FZ HANDLEBAR....

it hardly costs anything compared to the difference it gives...

@ gixxer.

i didn't check the spark, but the previous one was copperish brown.
however that fuel dripping carb isn't allowing me to ride anymore.

@ bprags

is the removal of catalytic converter absolutely necessary??
i am a bit dodgy about the same.

@ vishal

thanks a ton dude, it wouldn't have been possible without you.
and the food at your place is AWESOME, i will come next time just for lunch ...

@ all

guys you have no idea how good vishal rides..
he's fast and controlled, however he needs better brakes, but i am a bit unhappy with his very high usage of DUAL HORNS..

I'll keep updates going, maybe everyone will understand better.

NANO bro, had I known about this stuff before, I'd have gone straight for the 180 bore. Well I just got the first bore done, so I guess I will have to wait a bit. 5.5K! for the whole thing, that's very resonable for such an upgrade. I guess the new carb will cost you some more. I suggest you go for the RTR 180 carb as you also have it's piston and block. Do we need a different spark plug on 180 cc? ... A Wheelie that easy is amazing and that too in the run-in period. Imagine what it could do with the new carb and filter.

Keep updating us bro.

@NANOTECH

You will have to modify the silencer like bprags said.Go to a welding guys who deal with bike repairs and they will be able to open up the silencer and drill some big holes in the baffles and maybe even remove one too.Here they quote 400 bucks for such work on pulsar exhausts,if you have no worries about cops catching you for exhaust modification ,then you can always go for HRC free flow exhaust which will cost about 750 bucks then you can cut off the f2 silencer and weld the HRC to the bend pipe.Noise will be very high though

CARBURETTOR: Don't buy it from the TVS showroom,repeat,DON'T !
TVS robs ppl blind .Why? A ucal CV BS29(PULSAR150/180/200/RTR 180) or BS 32(PULSAR 220) carb costs 2000 bucks at ucal distributor as well as at the bajaj showroom.Were as the same carb costs 3,750 at TVS.The funny thing is its smaller Bs 26 is priced at some 6000 or something at SUZUKI showrooms

Considering you miss the mid range.I would advise you to go for the UCAL BS 29 carb.If you go for the 32mm carb your mid range and initial will go down drastically.