Spesifikasi & Modifikasi Tupai Masing2 V2

chocolate wrote:

i can see there's a dual stage boyesan reed valve ho3

sorry but that's the only clear picture that i have

i dont really like using yeis since it add more heat to my engine..or is it because the configuration of the yeis itself making it hotter? once i try to fit a DIY yeis to my bike,try running it for the first time,and not bad,it fix the sluggish problem at mid rpm..but my engine easily become hotter compare with before i install the yeis

i use a 200ml plastic bottle(fork oil bottle),a tubeless tire valve(with the inside's part removed) to connet the tube from the bottle itself to the intake manifold..is it because the tube is too small?the diameter of the tube is only quater of inch..

Owh no problem bro, hehehe... but for my and other members reference could you tell us pilot jet & main jet size in your Mikuni TM 28 carb? because I ever use Mikuni TM 24 SUDCO before, ideal jetting is 30 for pilot jet and 130 for main jet.

hehehe.... Boyesen first step bro, Insya ALLAH if I get more money I will buy Vforce3 reed valve system.

have you ever try to reduced tube volume? or try to installing Yamaha RXZ YEIS system? I ever read some article that the ideal size for Boost Bootle size is 0.80-1 : 1 with engine displacement, for example 125 cc engine in Yamaha Touch 125 cc is only use 100 cc volume plactic induction chamber with short hose.
last week I got Yamaha RXZ YEIS system, and planning to use in my 125Z.

thanks bro.

i have a 'little' problem with the carb,the pilot is just nice,but the main jet is not sufficient enough..as for the last jetting, i use mainjet size 315,and pilot size 35..we suspect that the special jetting named 'air jet' need to be change to a smaller size,but since its really hard to get a replacement for that 'air jet',i just left as it is..owh i already port my head block,so i think the jetting will be different on other bike..

thanks for the info,already got 100ml bottle..maybe need a little bit tweak on the hose

chocolate wrote:

i have a 'little' problem with the carb,the pilot is just nice,but the main jet is not sufficient enough..as for the last jetting, i use mainjet size 315,and pilot size 35..we suspect that the special jetting named 'air jet' need to be change to a smaller size,but since its really hard to get a replacement for that 'air jet',i just left as it is..owh i already port my head block,so i think the jetting will be different on other bike..

thanks for the info,already got 100ml bottle..maybe need a little bit tweak on the hose

Owh I see... Air jet function is metering the air flow through the passage to and into the needle jet.
It acts as a fine tuning component in regulating the fuel-air mixture... base on some experience in carb setting if you want to lowering the main jet size you have to increasing the main air jet size.

In my town, with many mechanic roadracing use TM 24, so if they want to improve the performace in that carb they moddified the air jet hole so Yamaha RXKing pilot jet can fit into it, becase they have the same diameter... RXKing use Mikuni VM 26 carb, and have 22.5 pilot jet's size.
you can try to replace the air jet TM carb with pilotjet from VM or TM carb.

Mafiaflix wrote:

In my town, with many mechanic roadracing use TM 24, so if they want to improve the performace in that carb they moddified the air jet hole so Yamaha RXKing pilot jet can fit into it, becase they have the same diameter... RXKing use Mikuni VM 26 carb, and have 22.5 pilot jet's size.
you can try to replace the air jet TM carb with pilotjet from VM or TM carb.

exactly just like what my foreman suggest

im afraid that it might screw up the carb,so i just ignore it..but since u suggest the sama thing maybe i'll reconsider it,tq

spe c moto taun baru....

head ptg 2mm
blok korek lubang ekzos secukup rase...
piston 0.75
carb kips pwl 28mm (mainjet 115 & pilot 43.5)
pkai 2t bancuh sepenuhnye...(pam 2t rosak)
tayo blakang 90/80 tayo dpn 70/90

pick up: pulas jek pegi,pulas jek pegi(pinjam ayat sape x tau)

abis try tukar carb memakai Keihin PE 28 NSR SP, open filter.
wow settingan pilot jet minta besar kali, pakai 52 baru mudah di starter... di kasih 48 susah la nak hidupkan mesin.
main jet ketemu 115.

pais924 wrote:

spe c moto taun baru....

head ptg 2mm
blok korek lubang ekzos secukup rase...
piston 0.75
carb kips pwl 28mm (mainjet 110 & pilot 40)
pkai 2t bancuh sepenuhnye...(pam 2t rosak)
tayo blakang 90/80 tayo dpn 70/90

pick up bleh dikate kan lebih skit jek dr moto stendet...hhehe

wow mantap!
pilot jet kecik itu bro... ape x susah start mesin pas pagi hari?
exsoz gunakan brand ape bro??

mafiaflix= ekzos stendet aja...di kmpung ssh mau cari pilot jet 52 (saiz besar sangat limited)....kalo di kl bisa dicari dong...huhu...

chocolate wrote:

this is the one that i use with mikuni tm 28..



cant use the oem part since the carb being larger at the base,stuck with engine casing..

cm tu je spacer die...

aku ade 1 reedcage yg da xpakai...nnt ingat nak potong n tambah kat reedcage asal la...agak2 cukup ke ketebalan die?...

bro2,meh tlg aku yg tgh blur dgn moto ak ni..ak br wat standard modi..tapi x leh pegi gak..cam sebelum ak hntr wat je..ade sikit perubahan je..duit dh melayang,tapi x memuaskan..kalo men sekilo,ade la sket perubahan..kalo pemanduan biasa, cam x de pape je..ni spec moto ak:

piston 0.5dt
ekzos bm power
karb rxz mainjet 240 pilot 30
head potong 0.5mm kalo x silap
klac die usik, tapi x tahu apa yg dia buat..memang responsive
cdi racing bee
sprocket 15-38

tapi still x de beza sgt..try sekilo ngan tzm,gear 1-4 ak tapaw, 5-6 kadang2 tzm 2 dpt potong
pomen 2 ckp ngan ak, kalo wat stndrd modi ni leh dpt out meter..tapi meter ak kalo bwak bese hbs pusing throttle 150 je..mcam dlu gak..kalo 2 org 140..meter ak mmg brt sket

pomen 2 ckap,kalo nk lg sdp msk karb tzm ngan yy pang..adoi..

fiq wrote:

bro2,meh tlg aku yg tgh blur dgn moto ak ni..ak br wat standard modi..tapi x leh pegi gak..cam sebelum ak hntr wat je..ade sikit perubahan je..duit dh melayang,tapi x memuaskan..kalo men sekilo,ade la sket perubahan..kalo pemanduan biasa, cam x de pape je..ni spec moto ak:

piston 0.5dt
ekzos bm power
karb rxz mainjet 240 pilot 30
head potong 0.5mm kalo x silap
klac die usik, tapi x tahu apa yg dia buat..memang responsive
cdi racing bee
sprocket 15-38

tapi still x de beza sgt..try sekilo ngan tzm,gear 1-4 ak tapaw, 5-6 kadang2 tzm 2 dpt potong
pomen 2 ckp ngan ak, kalo wat stndrd modi ni leh dpt out meter..tapi meter ak kalo bwak bese hbs pusing throttle 150 je..mcam dlu gak..kalo 2 org 140..meter ak mmg brt sket

pomen 2 ckap,kalo nk lg sdp msk karb tzm ngan yy pang..adoi..

mak aih... piston dh oversize tu... enduro saiz o.5.. xkn x leh g dh... mugkin block ko x usik kot... blok xde porting pape ke..?

fiq wrote:

bro2,meh tlg aku yg tgh blur dgn moto ak ni..ak br wat standard modi..tapi x leh pegi gak..cam sebelum ak hntr wat je..ade sikit perubahan je..duit dh melayang,tapi x memuaskan..kalo men sekilo,ade la sket perubahan..kalo pemanduan biasa, cam x de pape je..ni spec moto ak:

piston 0.5dt
ekzos bm power
karb rxz mainjet 240 pilot 30
head potong 0.5mm kalo x silap
klac die usik, tapi x tahu apa yg dia buat..memang responsive
cdi racing bee
sprocket 15-38

tapi still x de beza sgt..try sekilo ngan tzm,gear 1-4 ak tapaw, 5-6 kadang2 tzm 2 dpt potong
pomen 2 ckp ngan ak, kalo wat stndrd modi ni leh dpt out meter..tapi meter ak kalo bwak bese hbs pusing throttle 150 je..mcam dlu gak..kalo 2 org 140..meter ak mmg brt sket

pomen 2 ckap,kalo nk lg sdp msk karb tzm ngan yy pang..adoi..

perghh... gempak dowh mesin ko... aku pakai alejek piston oversize pon guna mainjet 200 jek...
mnyak da parah pon x ju lg biar betul? try la test dgn meter org lain dlu..

tu la die...aku nye tupai block std modi pakai piston 1.25 head ptg 1mm carb RXZ mainjet br 220...tu pun plug da dekat nak itam...

sama kes T.T tolong la sekalian

blok 225 dah, carb rxz pilot 250 mainjet 22.5 tp tak leh outmeter
gear 5-6 agak sebu..

tolongg~!

try la set pilot besar tgk cmne...

wow bujal, cun gle time ko posting..
hahahaha..
btul tu, try naekkan pilot.
piston dh besar, carb dh besar, pilot plak mcm tk ckup besar..
try pilot 30, cover kotak angin bukak..

paan1171 wrote:

fiq wrote:

bro2,meh tlg aku yg tgh blur dgn moto ak ni..ak br wat standard modi..tapi x leh pegi gak..cam sebelum ak hntr wat je..ade sikit perubahan je..duit dh melayang,tapi x memuaskan..kalo men sekilo,ade la sket perubahan..kalo pemanduan biasa, cam x de pape je..ni spec moto ak:

piston 0.5dt
ekzos bm power
karb rxz mainjet 240 pilot 30
head potong 0.5mm kalo x silap
klac die usik, tapi x tahu apa yg dia buat..memang responsive
cdi racing bee
sprocket 15-38

tapi still x de beza sgt..try sekilo ngan tzm,gear 1-4 ak tapaw, 5-6 kadang2 tzm 2 dpt potong
pomen 2 ckp ngan ak, kalo wat stndrd modi ni leh dpt out meter..tapi meter ak kalo bwak bese hbs pusing throttle 150 je..mcam dlu gak..kalo 2 org 140..meter ak mmg brt sket

pomen 2 ckap,kalo nk lg sdp msk karb tzm ngan yy pang..adoi..

mak aih... piston dh oversize tu... enduro saiz o.5.. xkn x leh g dh... mugkin block ko x usik kot... blok xde porting pape ke..?

2 la,ak x pasti dorg porting ke x..ak nk jmpe blk pomen 2..moto ak kalo nk wat pemanduan biasa mmg teruk sket..kalo ak x remp awl2 smpi hbs, plg laju pon 100..pomen 2 setting nk main sekilo..bagi minyak ngan 2t lebih..
sape2 bleh bg tips standard modi yg bleh bagi outmeter..pkai piston ape, setting pilot mainjet bape, ekzos ape, head potong, porting n ape2 la..
ak nk sgt project outmeter ak menjadi.. share2 la..tlg ak

xbleh ckp gak bro nk pkai piston ape, ekzos ape dll... bergantung pd setting... cuba tnye pomen ko die usik ke x blok..? nk senang ko bukak sndri tgok blok ko.. tpi plik gak dh modi pon dpat 150 je...? stendet pekak pon syum leh ptong ko... hahaha... ad bnyak faktor nk cek...

adoi..ak dh blur ngan pomen aku ni..ak tnye ade porting x,die kte x de..ak tnye adk die, ade porting plak..mne 1 ni..ak nye saiz piston pon die bleh silap..geram btol aku..ade sape2 dok area ipoh yg ade karb tzm ngan ekzos yy pang x?ak nk pnjam try psg..tgk cmne performance..org kte pomen ni kaki joki kat ipoh..

fiq wrote:

adoi..ak dh blur ngan pomen aku ni..ak tnye ade porting x,die kte x de..ak tnye adk die, ade porting plak..mne 1 ni..ak nye saiz piston pon die bleh silap..geram btol aku..ade sape2 dok area ipoh yg ade karb tzm ngan ekzos yy pang x?ak nk pnjam try psg..tgk cmne performance..org kte pomen ni kaki joki kat ipoh..

hahah... xkn nk pkai harian kot ekzos yypang... x pnat ke asik kena kejar ngan polis n jpj.. keh3... try tukar cdi ori.. tgok cmner dlu...

haha..try pasang je..nk rse camne..lg 1,kalo nk adjust setting utk perjalanan biasa@long distance,bukan utk berlumba..ape yg kne set eh?

fiq wrote:

haha..try pasang je..nk rse camne..lg 1,kalo nk adjust setting utk perjalanan biasa@long distance,bukan utk berlumba..ape yg kne set eh?

carb kene set blek... tgok reading plug dlu.. kot2 kena naik mj... angin pon kena setting blek...

Huhu... bestnye rr kowg mengspesifikasi & memodifikasi tupai masing2 ye...
aku tukar coverset jer... huhu...

yeke yap?ptt pon laju..tukar coverset rupanyer

ade sape2 otai 125z x area ipoh ke, pasir putih ke ngan kwsn berdekatan? ak nk berguru..haha..mencari sifu 2 stroke