jetting

He guys, I finally bought a Keihin PE28 to go on my 155z with a V2 head and big bore kit. I've had no luck with the OKO 26mm and OKO 30mm, so here's hoping. My main question is what jetting should I go for? I've seen plenty about jetting for the 190 anima, but then again that has...

Hello! Can someone give me some baseline jetting for 28mm pwk carb. I think that 100 main and 38 pilot would be good, what do you guys think? I have 160cc yx with tb v2 head.

Hey everyone I'm new to this forum stuff. Was just wondering if anyone can help me out. I have just bought a 125cc electric start lifan engine for my atc70 and I want to use a 1982 Yamaha yz80 carby, can I just put it on and tune it with the 2 stroke jets or do I need different jets?

G'day all. I recently bought myself a twin exhaust setup for my outlaw 140. Now when I fired it up I got a greeting of spluttering up high in the rev range. So I've changed the main jet up to a 110 from a 100 and it seems to be a little better but still has a massive flat spot up top. I...

I have a lifan 125cc motor with a uni air filter and a big bore ebay exhaust. what notch should my fuel needle be set at on the carb?? Right now it is set 2nd notch from bottom. I am also 535 feet above sea level. Thanks,Mike

ok so ive got the OPBS X 125cc...i just ported it and now when i have the throttle wide open it keeps almost coughing(like it keeps cutting out every couple of seconds), like its not getting enough gas. also when i am decelerating it makes pops out of the muffler. what do i need to do to the...

Found this pic in a post by nick AKA nickv1980 and thought it will help people who wonder about jetting and how it works and where different carb functions come into play.