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no will sound terrible...

i've owned bikes with flat slides and the throttle respones is alot more crisp

personally i would be goin towards this way..... 170cc monster!!!! Big 50 Race and Retro Parts now thats whats i'm talking about!!! pure power

hey mate your choke is exactly that a choke its chokes the carby but still lets the fuel in thus starving your motor of air but flooding your cylinder.. so bad idea as you need wide open throttle for nos mostly... NOS (brand name) N2O expandes the oxygen particels surounding it when realeased...

heavy dosent mean better... i have an orion.. and i have bent my frame and broken the mounts off the frame... that was after over a year of hard thrashing.... but thats the only thing i broke apart from the few odd cables levers and chain... chain lasted longer then frame actually... my frame...

150 impossible.... as if... theres like a record or something of a pitty doin 182kp/h in NZ... so it can be done.... as is his bike already does 100+ as i top out at around 85..

i'll go buy a 105 in the morning... my needle is on the richest setting at the moment...

hey i recently ported my head.. just cleand it up and a little bit of shaping very minor... now i put it back together and it starts and runs great untill about just over half way thru the rev range and it stutter really bad...i can hear how lean it is.. i'm thinking this is due to jetting...

just pack it up with washers... works a treat if you dont want to spend any money... i got about eight in each side,handles much better... but do it to suit your weight and the way you like it....

a 80 is smaller in size then your 125! and if you find an old air cooled one its a breeze... but i would prefer to go with a watercooled which i will when my ducar dies but it just aint... i might choose the KTM 65 because its a screamer but an 80 just sounds better... look on a few american...

drop a cr80 2 stroker in it with the box fits fairly easy if ya handy with a welder.... just make sure you can hold on... that could be done fairly cheap to. alot cheaper then putting a crf50 modded motor or stock that matter in...

go out eumundi road turn off at beckmans rd (on your right at a roundabout just past the industrial area)... towards cooroy... travel about 1km up that rd turn into the bush on the right get your bike out and ride... if your keen for a ride i'll be going on sunday...

you bore it out so that your sleeve is alot thicker... this helps with strength and heat disapation..

by no exhaust do you mean no end can? because if you have NO exhuast you will burn out your exhaust valve... p.s i thought a JR50 was 2 stroke so no end can would make less power more noise.

i can start my bike in any gear as long as the clutch is pulled in.

also check your float is working... with the fuel bowl off and the needle in the seat.. hold the float so the needle is closed and turn on the fuel and open and close the needle by pushing the float up. if the fuel dosent stop check that your float is set level... pm me if you need a more...

hey i got transport and i wouldnt mind going for a ride on saturday morning somewhere... i havent been down the pine forests so i wouldnt mind heading down that way for a few hours on sat morning....... cheers ryan

for 1 the choke is wrong and for 2 they are made to fit the same manifold so you can see the barrel is smaller on the one on the right... mines the same as the one on the left but it is a 26mm kehin(better then mikuni in my experiance) not pit bike related...

also dirty oil i a major factor in a new motor.... all the crappy casting gets washed around the motor... i know of alot of motors that have seized to to this.. has anyone thought of making a oil filter setup for any of thses motors...

the piston dosent often seize in a 4 stroke.. it is usally the bottom in bearings due to lack of oil... or in an aircooled motor overheating the oil and never changing it... oil looses is viscousity rating when it is over heated... change it more often to avoid this..