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Re: 85cc monkey bike upgrade to 110cc? Will it work

Posted: Tue Feb 02, 2021 9:59 pm
by Monkeysteve
I’ve done the rebuild today, starts first kick but won’t Rev up past 4000rpm? Runs fine up to that point and just sits there and bogs on full throttle then will come back to tick over ok? Do you think jetting or something else? Doesn’t seem to be leaking anywhere and everything torqued down properly. Any advice on jetting? Thanks again

Re: 85cc monkey bike upgrade to 110cc? Will it work

Posted: Wed Feb 03, 2021 7:32 pm
by Monkeysteve
Fixed now. Valves needed adjustment. Any advice on correct jetting?

Re: 85cc monkey bike upgrade to 110cc? Will it work

Posted: Fri Feb 05, 2021 9:48 am
by wightegi
The larger capacity will suck more so smaller jets maybe in order. Diesel Dave has a section on jetting LIfans which would be worth reading .

viewtopic.php?f=20&t=30162&p=278481&hil ... ng#p278481

or put Lifan 110m jetting in the search box.

Re: 85cc monkey bike upgrade to 110cc? Will it work

Posted: Sun Aug 08, 2021 12:59 pm
by Barnsey
I was recently advised to put a #83 main jet in my Lifan 110 powered cub replacing the #75 which the carb came with. I will be testing this out this week hopefully, showers dependent.