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big bores the 138/127 kit bolts straight on. You can put the 140cc kit on but you need the stainless inserts to shim down the piston to a 14 mm gudgeon pin like I have. you don't get low compression because the positioning of the piston pin in the piston is differnt to your 125 piston making...

140 wont bolt on to the 110 for the same reason the piston pin is smaller so im led to believe. I have got a bag full of spacers to step down your 15mm piston pin hole to a 14mm allowing you to put ur 140 kit onto a 110 120 125 138 cc lifan engine. The spacers still need to have the end machined...

head to head The stroke difference is made up by different positioning of the piston pin in the piston the problem is that a 140 cc piston has a 15 mm piston pin and the 138cc/127cc piston has a 14mm piston pin, u cant have 1mm slop between the inner of ur piston and the piston pin a problem I...

Head removal..... On the side of the engine that ur kickstarter is on there is a ten mm bolt in the middle of the head, it goes right through the middle of the engine and holds the timing wheel cover on, unbolt this and u will see ur timing chain and timing wheel/sprocket it has three 9mm bolts...

Hi jus bought a 138cc lifan engine, any one no what carby works best with this engine in stock form ie is it a 30mm 26 mm 25mm and what are the standard jet sizes or what is better to have in them? just wanna get the thing going and going good at this stage.