tuning

Here are some picture's of a few common pit bike carby's These are posted here for a reference to help identify your carby Keihin china copy, Sheng-Way, Jing-Ke PZ16 (16mm), PZ19 (19mm), PZ20 (20mm). PZ21 (21mm) Round bore Carb, ideal for 50cc, 70cc, 90cc, 110cc engine's...

looking at buying a new carby for my bike as I am having dramas with my current 26mm Molkt that came standed on my 150cc atomik nitrous. Ive never changed jets in a carby and would like to buy one where I can just bolt it up and ride with minimum tuning and stuffing around. I was thinking of...

My CRF50 fully automatic 49cc 4 stroke clone motor is not running right, it has barely any power. Starting from a standstill takes longer than it should and it can barely climb the slightest inclines. Just put new gaskets on the top end. Compression test read 145psi. I have tried messing with...

Hi all, Im new to the forum, and I need help with my crf50 clone engine. It is a 50cc 4 stroke fully auto. It doesn't have gears or a kickstart, so I am relying on electric start to turn it over. I kinda bypassed some of the electrical, but it gets spark and turns over. I checked for...

So just had a chat to my mate that owns the ranch at Morgan. He said no worries we can use it again. We know about the driveway in now and how it works! A Generator would be awesome next time to fire the lights up. There is a caravan there that could be usable with the use of a vaccum...

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...

So ive run my new dhz outlaw (140 zonger) for about three tanks now, and considering it 'run in' i thought id open that throttle, however when i did this, from a low speed in second to flat i was disapointed to find a short lag or 'bog' before it really picked up. this is also relevant when in...

I was reading a thread on here discussing linkage and non linkage suspension setups on both pit bikes and the 2011 KTM's so I clicked on a couple links to read more about it when I came across this suspension tuning and troubleshooting guide. It was written for/by WP suspension but the same...

hey ib been playing with this for a few days done my clearances..... But i cant get it to idle with the choke off it will idle rough with the choke on but when i turnn the choke offf it will rev up then drop back down backfire/pop and then stallll what can i do i need help!!!!!!! Thank you

SO WHATS THE DEAL WITH THESE MOLKT CARBIES ..... I GOT 1 STOCK ON MY 09 PITPRO RUNNING A YX160CC .... WHAT KIND OF JETS DO THEY RUN ? ALSO WHERE WOULD GOOD STARTING SETTINGS (IE AIR 1 TURN OUT & IDLE 1.5 TURNS OUT CLIP ON 3 ???) IT IS STARING ONLY WITH THE CHOKE ON FULL AND IT IS RUNNING...

Hey All, Ok what yas all think. Both me and my girfriend have 140cc bikes with Yx motor and Molkt 30mm carbs. Her bike seems to be a little bit smoother than mine in the lower gears and a fraction bit more responsive, mine in the low gears 1st and 2nd at low revs tends to hiccup a little, also...