did some calculations about weight..i've taken 1 litre petrol weighs .72kg.
(Answers.com - What does 1 litre of petrol weigh)
and i've not added the reserve petrol with fuel capacity..because i guess it was already included in the fuel capacity..

1. Honda CB Unicorn - Kerb Mass(146), Fuel capacity(13.0L, 1.3 R) Petrol Weight 9.36, Dry Weight 136.64

2. Hero Honda Hunk - Kerb Mass(146), Fuel capacity(12.4L, 2.2 R) Petrol Weight 8.93, Dry Weight 137.07

3. Hero Honda X-treme - Kerb Mass(143) Fuel capacity(12.0, 1.5 R) Petrol Weight 8.64, Dry Weight 134.36

4. Suzuki GS150R - Kerb Mass(149), Fuel capacity(15.5L, 3.5 R) Petrol Weight 11.16 ,Dry Weight 137.84

5.Apache RTR 160 -Kerb Mass(136), Fuel capacity(16L) Petrol Weight 11.52 , Dry Weight 136.

6.Bajaj Pulsar 150- Kerb Mass(143),Fuel capacity(15L, 2L) Petrol Weight 10.8, Dry Weight 132.2

7.Honda CB Unicorn Dazzler- Kerb Mass(138), Fuel capacity(12.0L, 1.3 R) Petrol Weight 8.64, Dry Weight 129.36

i took apache, pulsar and dazzler weight from their websites..in case of apache i guess 136 itself is the dry weight...even if we add petrol weight of 16 L the overall weight of apache is 147.52....but ours with petrol is 149..


conclusion:

ours is still the heaviest bike in 150cc segment (ya apache is 160 but included in the analysis out of curious) but not with much difference...

P.S. i still don't know why i've made this analysis..may be just for time pass...

Thanks for the kind words...to you and Anupdas for thinking that i can be useful here...I was actually thinking of resting for a couple of days ,since looking back,I found nearly FOUR pages full of PSR....and thought I was a bit overbearing and not giving others a chance to voice their observation...I think I will go easy on my presence and give a fair chance and space to other contributing members..
regards.PSR.

mps ....thats one great calculation from your side..really helpful..The dry weight of all the bikes compared are almost the same...and wet weight must include the engine oil also.We should consider the dry weight only as the other parameter is variable....hence GS is equal in weight to others, but better in overall performance than others..

But the bigger carburetor may not be responsible for all the torque and peak power changes to the Pulsar 150..........as far as I know,Final drive is now different(bhp biased) and also the rev limiter pattern is identical to Pulsar 220(kicks in later).....

Did you forget the Yamaha brothers ???

FZ16 and Fazer - 153cc air-cooled 2V engine,produces 14Nm of Torque.
YZF R15- 149cc liquid-cooled 4V engine,produces 15Nm of Torque


@Turbo Biker STI - XTP means Xtra Torquey Performance...........Suzuki uses PAIR(Pulsed Air Induction Resonator) aka Pulsed Secondary Air Injection technology to acheive this feat,which is no wonder a miraculous affair.This technology beats the Exhaustec,introduced by Kawasaki to Bajaj,hence Bajaj uses it subtly but still uses it.

Kawasaki heavy industries of Japan sources most of its technical knowhow from Suzuki, for all machines right till the ZZR1400.........and Bajaj has learnt the Pulsar trade from Kawasaki........no doubt there are million reasons why Suzuki is my best manufacturer.

If you are not sure the BS29 is responsible for new P150 torque and power changes ,then why do you want to use it in GS150 ? or have I not understood what you are trying to say ?
BHP is not in any way decided by the gears.Gears are a means of conveying engine power to the rear wheel, in a specific selected way.The useful power from a ICE can be peaked at any RPM depending on the gearing,and hence power delivery.

Higher volume of A/F mixture to the cylinder........the 150cc can take it.
BS26 for that matter too works on some 125cc bikes

The GS150 is a stock 149cc air cooled engine,and I can compare it with a similar engine only..

Without any mod done to the engine ,the engine cannot breath more than stock design ....unless you have a turbo to ram it in..

Then count FZ16 in
...........Suzuki Fiero(bland styling) was pitted squarely against Hero Honda CBZ(highish price),Fiero was 149cc,CBZ was 156 cc engine.
.......Before Pulsar 150 walked out with the cake for low price and aggressive styling.

Then what do you have to say about a 125cc which runs a BS26 carb and that too built to be a normally aspirated bike ????

After long time hmmm
Nice info thanks

Driven the yamha enticer for almost 45 kms wow what a relaxed position and great feel

The volumetric efficiency of the engine design, decides the CFM of intake.
The GS 150 is 149cc, the New and Old Pulsar 150 are also 149cc,and so is the Hunk.....But none produces the same torque as GS...
The Engine design decides the Carburettor

A very good bike.......a ride on a well maintained one is enough to tell that the Yamaha has detoriated when it comes to quality.

Too much mumbo jumbo ...........but FZ16 still makes better torque,uses the BS26 too.........however,when it comes to modding it is The Owner who decides the Carburettor

..........somehow I prefer old school bolt on big ideas rather than pursuing too much doubts that won't make any difference hopefully.

Sorry it is not mumbo jumbo.I will put it in a simple way ...if a vessel can hold 100ml of water only at a time,I can't make it hold more by pouring water from a 1 liter or a 10 liter bucket,can I ?....the engine is the vessel, the carb is the bucket.