Yinxiang 124cc ,swap to Ducar 124cc

[Tbags]

Hey guys,

i pulled the Ducar engine (DJ154FMI) out of the cheap banga and really have no use for it
so the young lad i work with has a CRF50 copy and it has a Yingang engine (YG154FMI) that is pushing more oil out the back than you can imagine

personally i dont think its worth rebuilding either but he is happy with a 124cc

which one would be better to slap in a new piston, rings and a quick port job in to get him back out bush bashing

 

[Tbags]

forgot to mention the Yingang gearbox is a strange reverse box, 4 down
Ducar is 1 down 3 up

 

[Blender]

i'd go the ducar, but in saying this i hav not used a yinyang before. i have a ducar 125 in my mini, and its been an extremely faithful engine. its still going after 7 years, on the same piston an rings lol. but it is due soon. gearbox and clutch have remained in tact too, which is always a plus.

Was the Yinyang engine originally out of a buggy/ atv? alot of their engines will have reverse.

 

[Tbags]

i cant tell you if its original or if it was a swap over, the apprentice purchased his bike about 4 months ago, so its done all right for him, not knowing what the previous owners would have done to it

The Ducar engine i have doesnt really need anything right now i guess, i have never really ran it up, all i know is it does run,
we work on heavy diesel earthmoving equipment, so rebuilding it will be more for fun and experience for him with fiddly things

 

[Blender]

yea, give the ducar a go. do the following before even starting it

1. change the oil to some 10-40 NON synthetic mineral oil

2. check valve clearences: [video=youtube;QJciyJRJh8Q]http://www.youtube.com/watch?v=QJciyJRJh8Q[/video]

3. clean carb out with compressed air, and wack a foam filter on, or clean your current one

Good luck

 

[stoozo]

yea, give the ducar a go. do the following before even starting it

1. change the oil to some 10-40 NON synthetic mineral oil

2. check valve clearences: [video=youtube;QJciyJRJh8Q]http://www.youtube.com/watch?v=QJciyJRJh8Q[/video]

3. clean carb out with compressed air, and wack a foam filter on, or clean your current one

Good luck

Agreed. I just got a 2008 lifan 124cc in a second hand bike and the valves hadn't ever been touched! The last owner thought it went hard before that

 

[Blender]

hehe, lol it is amazing how much people are experts sometimes !! i listen to people at school, trying to be impressive, and by no means do i know all, but atleast i dont pretend too! although it is entertaining to see how far they'll go, some people are desperate for accepantce!! just be yourselves, thats whats really cool!

 

[Tbags]

Cheers mate for the link for the valve adjustment,
i have done them many times before on my 140cc and 155cc, we will give the engine a good service before it goes in, and will see how long it lasts

 

[Blender]

good to hear mate, i think you'll find the ducar to be pretty reliable, the only time mine wouldnt start was because of the crappy china "performance" CDI blew, and i had a pretty gummed up carb. fixed that and she started up first go! but just keep the maintenance up and u should be fine