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Thread: Suzuki GP 100

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    Default Suzuki GP 100

    This bike was in production from early 1978 to sometime in the 1990's It was available in 3 versions.


    1) Disc brake wire wheeled sports version
    2) Later sports version with alloy wheels
    3) Later commuter version with drum brakes and wire wheels.


    Eariest bikes were 12bhp and 8500rpm, 50mm bore 50mm stroke, disc valve 2 stroke. Maximum speed in low 70s and 0-60 somewhere around 14 to 16 seconds.


    Later bikes were detuned to 11bhp


    They weighed just under 200 pounds and had 6 volt electrics.


    Comfort



    Good seating position and seat, however pillion foot rests on swinging arm.


    Electrics
    =======
    Horrible, 6 volt lights and points hidden behind a flywheel which were difficult to adjust.


    Ease of maintenance
    =================
    Pretty good 1/2 hour to swap a piston, brake pads easy to change. However points difficult to adjust as removal of flywheel is necessary.


    Reliabilty
    =======
    Good and bad, electrics were a problem but rest was quite good, needed a rebore after 10,000 miles - of being thrashed. Points were a bane all the time I had the bike, I hate points they are horrible and a maintenance nightmare - directly caused two holed pistons due to timing being out.


    It along with lots of bikes of that period tended to rust easilier than it should. - I had to rebuild the fork legs with epoxy resin in the pits and gaters fitted.


    Running costs
    ============
    Quite good 60-80mpg, cheap tyres, plugs needed regular changing, 2 stroke oil easy to put in every few 100 miles (I think a filling lasted about 500 miles), pistons were cheap at £6.50


    Handling
    =======
    Not bad, on par for the class, main problem was bouncy suspension.


    Brakes
    ======
    Best in class by a long way, first 100 with hydraulic front disc brake. Capable of outbraking most vehicles on the road.


    Performance
    ==========
    Standard: Very good for the class - OK best - it was the fastest 100cc production bike all the time it was on sale, cruises on ordinary roads at the limit without being flat out, could break 70mph on the flat but was tiring to ride at that speed as you had to conserve your speed.


    Modified: Due to watching a race between Barry Sheen and Kenny Roberts I crashed on a tight right hand bend and cracked the exhaust, 3 months later I replaced it witha Micron exhaust, a bit noisy but greatly improved performance. I up geared (15 to 16 tooth front socket), rejetted (97.5 to 102.5 main jet), replugged (grade 8 to grade 9 NGK spark plug, porting played with.


    Genuine 80mph on the flat (still accelerating), 11-12 seconds 0-60, faster than any standard 125 including the Honda twin. This was 80mph at 9500rpm including up gearing - it would pull to 10,000rpm


    Conclusion
    =========
    great cheap first bike, easyish to maintain, fun to ride, easy to tune. It could be ridden as a go to work/school bike, or thrashed for fun without too much licence risk.


    Good points : Performance, brakes (if disc), cheap to run.


    Bad points : Electrics, fragile to rust.


    What would have made it a better bike?


    12v electrics, electronic ignition, better rear shocks, front fork leg gaters, some anti rust treatment on exposed areas


    Suzuki GP 100 -581501

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    My question is why that 100cc two stroke bike used to produce 12bhp, even 1bhp more then CG125. Yamaha yb 100 and suzuki shogun are also 2 Stroke 100cc, they produce 9bhp, what could be reason, any engineer out there!!!

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    Not sure about YB 100 But Suzuki Shogun Produces 10 BHP. As far as diffrnece in Power for same Engine capacity is concern there is no big issue & manufacturer design diffrent power out put according to diffrent requirment.
    Exploring Machines is my Passion...

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    All have 100cc two stroke, GP100 goes till 125 KM/h while other two goes till 110km/h max, so same is my question, how GP100 has more power !!!

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    @ 2468


    bahut zulam kya


    bhuli hui yaadian taza kar deen


    zakham phir haray kar dye
    Islamic Republic of Pakistan

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    @2468


    Bro it all depends on how the desigenr design the engine just for example New 1800 CC cars available in Pakistan ( Altis & Civic) produces ~125 BHP while on the other hand it is the same power produced by modern 600 CC bikes Like CBR, YZF, GSXR, & ZX. If two person have same hieght & Wieght then wud it necessary that they have same power in thier Muscles?


    CC is just capacity of combustion chamber u cant relate it directly to the engines out put power.


    Specifically The Suzuki GP 100 & Yamaha RX series Bikes uses Reed Valve on their intake system which is far better technology than Rotary plate suction valve which is commonly used in legacy 2T bikes by Yamaha, KAwasaki, SUZUKI. So due to better intake system, bit higher compression & relatively high RPM Engine design tends towards more out put as compare to ordinary engine of same CC.
    Exploring Machines is my Passion...

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    Specifically The Suzuki GP 100 & Yamaha RX series Bikes uses Reed Valve on their intake system which is far better technology than Rotary plate suction valve which is commonly used in legacy 2T bikes by Yamaha, KAwasaki, SUZUKI. So due to better intake system, bit higher compression & relatively high RPM Engine design tends towards more out put as compare to ordinary engine of same CC
    .


    I agree with imranbhatti.


    anyway gp100 was a great bike. i will love to ride again
    ***SPEED+ACCURACY+AGGRESSION=YAMAHA RX115***

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    abdulghafoor bhai


    main nay aisa kia kar dia mere bhai kaon sa zakham


    imran bhai


    I will support your point because Aprilia RS 125 is a 125cc bike and produces 39bhp. But I think later on the engineers reduced the power in suzuki shogun on expense of higher engine reliability and better fuel economy !!!

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    good balanced simple bike
    in orange color
    :p
    For Riding Jackets & Gloves, Armors, Saddle Bags, Knee & Elbow Guards etc: https://www.facebook.com/PbcMotorSport?fref=ts

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    bore and stroke


    can define the difference between


    GP100


    YB100


    Suzuki Shougun
    muhammadasifmehmood@yahoo.com
    Cell#: 0300-4007480

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    @Mehmood


    Both suzuki shogun and gp100 has bore and stroke 50 X 50B-) now wherez the difference then ???

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    @2468 the difference is in intake systems by reed valves
    ***SPEED+ACCURACY+AGGRESSION=YAMAHA RX115***

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    BTW Suzuki is using reed valve in all 2 stroke bikes since late 80 which includes A80, A100, Ninja, Samurai, Bullet, SR 21 etc. & the diffrence of reed valve power can be compared in localy made QingQi rikshaws which are usualy powered by 100 CC motorcyles & Suzuki's 100 CC 2 Stroke bikes are famous for that purpose.
    Exploring Machines is my Passion...

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    @2468

    Yaar Kya yaad karwa diya my father owns one in back 90's but sold it. Main us din sy pachta raha hon ky yeh bike kyon sale kya. Its aweome bike better than our local crap like honda 125 and other local brands. my father told me that he drive it to 140kmph and didnt feel any vibrations. its smooth like butter. My Father got the 12BHP version.
    Two of the best quotes of Punjabi : 1. Rull tan gae aan! Per Chass aa Gae ai!, 2. Gal Pya Dhol Ty Wajana Penda ay.

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    @imran bhai


    If SR21 and GP100 both have so called reed valve (kindly elaborate it further) then how GP100 produced more and smooth power, and why suzuki discontinued it !!!

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    @2468


    Bhai g i m not saying that reed valve is the only thing which can boost the power Actualy its more advanced & efficent intake system in 2 Stroke engines than of rotary valve. there are many factors that can control the peak power. If these both bikes have same bore & stroke even then both bikes may differs in fuel system deffirent Carburators, Diffrent reed valve size, Diffrent electrical system which can effect peak engine RPMs & etc. so thats why both bikes differs in out put power even having same combustion chamber size.
    Exploring Machines is my Passion...

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    yes carburetor and fuel settings can certainly make the difference

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    i still have my GP 100 heheheheh................. 2 months pehlay meinay 120+ speed drive ki the....lolx

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    Question

    Quote Originally Posted by 2468 View Post
    @Mehmood


    Both suzuki shogun and gp100 has bore and stroke 50 X 50B-) now wherez the difference then ???
    i think gp have five gears

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    oyee dig oyee!!!!!!
    Dream is not that which you see while sleeping it is something that does not let you sleep.

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