yx150cc crankshaft to yx140cc block

[Jonte]

Is it possible to fit YX150CC (1p56fmj-5) crankshaft to YX140CC (1p56fmj) block that i don't have to change anything else, than just clutch cover? :b_grind:

 

[my67xr]

a YX140 is the same shape as a lifan, the YX150 is a large triangular shape
the top engine mounting bolts holes are different

 

[Cactus Jack]

There is a YX150 that is based on the Honda Nice engine like Lifan big valve 125/140/150 and YX140's ~ They were very well known as the YX150 DTE-5 and had the Daytona type clutch cover with replaceable filters ... Their bore was 56 mm and their stroke was claimed to be 60 mm ~

Moteur 149 GUNSHOT 149 YX 1P56FMJ-5 - Pièces moteur Lifan Ducar Yx Jialing Daytona ZhongShen GPX UPower Honda Loncin - 3959 - Pieces Pit Bike et Dirt bike, UPOWER dirt bike, PZF dirt bike, JOKER dirt bike, APOLLO dirt bike,

http://planetminis.com/forums/chine...ssion/109550-yx-160-yx-150-daytona-style.html

I'm fairly certain that their crank will fit a YX140 as long as the DTE-5 clutch cover , screws , oil transfer tube and spring are used ... Their rod fits a 13 mm gudgeon pin the same as the YX140 pin (not sure about piston pin height specs) ... Firepower Minis knows 100% for sure ...

It appears that they used the same piston as the YX140's ~ GPX & YX 150/140cc Piston kit - Pit Bike Engine Parts - Piston Kits - TRC-0997 - TBolt USA, LLC