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i did run daytona190 to 130km/h, if modify to 5 gear, it may come to 145km/h. changed two engines within one year, weak. but really strong power. dt is made by zs, but no sense to use daytona top fitting to zs engine, price is different from abt 280usd, top end expensive. cool to modify to 212...

compare them

kick 10-20 times, not normal, so engine problems more than exhaust problems

you may search YX160 gasket

no professional tool to heat, no need to make paint, falling off easily

anyway dirt bike is a dirt and hard sport, no need paint by private use

sorry i didn't minds that this posting long time ago

that's probbly Zongshen CB250 engine. CB means timing chain. but it's in fact 223cc. the cylinder bore is 65.5mm, the cylinder height is 81.5mm. most of off-road bikes use that Zongshen engine in China.

frame seems not very strong :)

it seems a 2004-year small bbr frame. same as China crf50 plastics, exhaust is special

takegawa rare earth inner rotor kit can use on Sachs madass or some entry stator,many webgsites have that stator for horizontal engine with honda based body

Z155 cylinder head is from Zongshen. different cylinder head can not use on Z155, that will cause problems. Z155 cylinder head has two versions, so you must tell which is which, the exhaust mouth is different

two stroke, more fuel comsume,more pollution, and bigger noise; four stroke, less noise,less pollution,save fuel, but two stoke more RPM and bigger power, anyway four stroke will beat two stroke in the future because four stroke can make bigger power either now

1p47 engine just the stroke different, Lifan Zongshen 1P47 parts can fit

YX150 is from YX factory, 155Z is from Zongshen factory. GPX150 depends on the years, the earlier versions are from YX, the later versions are from zongshen. YX140 is a stable motor because YX140 made by different team in YX factory, this is an old motor but quality is very good. compared 155Z...

Lifan 125 not good for upgrade, because too many big cc engines come out with cheap price