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hi guys im just wondering i own a bike with a zongshen 250cc pushrod engine and it blows heaps of smoke! what i want to know is will getting new standard sized rings fix it or because the bore/cylinder might be worn do i have to go to an over sized piston and if this is the case do they make...

for parts gasmans bikes at penrith are the best, and recreational imports at castle hill! cheers

yea like everyone else ill have to agree your rings are gone, it might just be the oil ring at the bottom of the piston but replace all 5, cheers

hey mate i live in the western sydney area like you and i know finding parts is hard but iv got two good parts shops for pitbikes the best one is called Gasmans Bikes for parts you want the warehouse in penrith, and Recreational Imports in castle hill!! let me know if this helps anyone!

i have a 125cc zongshen in my elstar blade 2 it runs great and had no real problem, except my gear selectors played up abit but a strip down and rebuild fixed that!! they are 1 of the better chinese engines! cheers

hi, mabey your head gasket is gone, that would explane the loss of power!! cheers

Correct Way Of Setting Cam Timing hey MARTY125, ok, iv ripped the china 125cc engines all the way down tons of times, actually mines in peices right now! and way dont worry about chain tension because under the engine there is a bolt nere the oil drain bolt, i believe its a 14mm if you take it...

My springs. i got my springs custom made by a friend.. and i dnt use fork oil i use a thick Automatic gearbox oil. honistly pitbikes are made for people under 12 who just want to putt around on the flat, i got a pitbike thinking it was a cheaper alternative to a jap bike but after a few rides i...

I know what your going through! hi there mate, i own an elstar pit bike and it has usd forks the same as yours and yes this was a problem for me too. To sum it up for all of you the forks have oil in them and when the fork is compressed the oil squeezes through tiny holes in the plunger to the...