Subject: Re: PERBINCANGAN MAIN JET PILOT JET Wed 6 Apr - 9:28:33
Jets
The carburetor contains a pilot jet, a needle jet and a main jet with each jet working at different engine speeds, although they do overlap each others range. The pilot jet is in use when the engine is idling up until the throttle is around 1/4 open. The needle jet's range is from 1/4 throttle up to 3/4 of throttle. Above 3/4 throttle and the main jet comes into use. Check the stock specification of each jet and buy three jets that are larger and three jets that are smaller than each type. You now have six new sizes for each of the jets and can adjust the carburetor over this range. The ideal ratio of the air to fuel mixture is 12.5 to 1, this means that there is 12.5 times more air for every one part of fuel. Increasing the size of the jets requires that you also increase the amount of fuel entering the carburetor. Keeping the mixture as close as possible to this ratio will enable you to get the best tuning setup for your carburetor.
Posts: 599 Join date: 20/02/2011 Age: 23 Location: shah alam
Subject: Re: PERBINCANGAN MAIN JET PILOT JET Sat 9 Apr - 0:16:38
otai2..nk tanye..aku cam baru tau..tapi xtau a tul ke x.. bile kt pakai mj kecik same cam kt naikkan spoket belakang..btul ke x?? contoh..cam seblum ni mj 150,turun mj 135.spoket 15-34.. skrg ni motor mengerang je hujung gear..kt rpm 7 da start mengerang.. juz nak tau teori ni betul ke salah..salah tlg tunjukkan
Posts: 599 Join date: 20/02/2011 Age: 23 Location: shah alam
Subject: Re: PERBINCANGAN MAIN JET PILOT JET Thu 5 May - 18:11:08
Fizz Fixz wrote:
tapi ar kan..pengalaman ak....
ak pakai mj 95(bapakkk kecik) yg heran time gear 1 2 3...sedap jer tarik.....hihihi smpi rpm 7 8 9...bila top....dpt dlm 10 - 11..
selepas itu...ak naik kan minjet ker 120, 130 dan skrang 170.....ak x dpt dah top smpi RPM 10....
gear 1 2 3...tarik...cam semput3...kenapa yer??? adew apa jawapan dr otai3...???
PJ...still 20....
ni blok ko da modi ke lum bro??time mj 95..skrg time mj 170??nk tau keadaan blok..minyak kalo kurang or ngam2 senang jalan tp topxleh maintain..kalo lebih sgt leh sebu moto..try a kurang kn saiz 10 10 n g set..try maintain..tp kalo modi bobok skit 2 normal..biar long xjem..
Subject: Re: PERBINCANGAN MAIN JET PILOT JET Thu 5 May - 19:46:08
satria_zr wrote:
Fizz Fixz wrote:
tapi ar kan..pengalaman ak....
ak pakai mj 95(bapakkk kecik) yg heran time gear 1 2 3...sedap jer tarik.....hihihi smpi rpm 7 8 9...bila top....dpt dlm 10 - 11..
selepas itu...ak naik kan minjet ker 120, 130 dan skrang 170.....ak x dpt dah top smpi RPM 10....
gear 1 2 3...tarik...cam semput3...kenapa yer??? adew apa jawapan dr otai3...???
PJ...still 20....
ni blok ko da modi ke lum bro??time mj 95..skrg time mj 170??nk tau keadaan blok..minyak kalo kurang or ngam2 senang jalan tp topxleh maintain..kalo lebih sgt leh sebu moto..try a kurang kn saiz 10 10 n g set..try maintain..tp kalo modi bobok skit 2 normal..biar long xjem..
blok ak dah mody time mj95...ermmm blok ak saiz piston enduro std...
lar ni ak up mj 170......ermmm bobok gear 1 2 3....4 5 6 ok.....
......
baru nie ak set mj 225 pj 21.5 ermmm agak mengeciwakan ak....pas dah set3...top ak dpt 120...pastu sebu3...
kenapa erk..??adakah minyak lebih smpi full throtle cam sebu2.....
pastu ak sarung mj 130 pj 20....alhamdulillah setakat ni manjung - kedah pergi balik x der masalah...
cuma memuskilkan ak...org kata kalo blok dah mody (besar) kena Pakai Mj besar....that y ak buh mj 225 tp lain jd
nyer....walau dah set angin n timing dgn betui....
Posts: 285 Join date: 20/02/2011 Location: Shah Alam
Subject: Re: PERBINCANGAN MAIN JET PILOT JET Thu 5 May - 19:59:35
bile minyak da kurang..campuran minyak dan angin lebih cun..hujung2 rpm sng je nk pegi..smooth je.. bile da set mnyk lebih...mnyk da lebih dari angin..sbb tu ade rase bobok.. tp takpe kot..sesuai utk maintain topspeed..
Subject: PERBINCANGAN MAIN JET PILOT JET 
Tue 5 Apr - 11:53:38
