2 stroke

  1. B

    throwing (oil)? from exhaust

    hi all, im hoping some one can give me some info about what might be my issue with this 2 stroke 80cc motor. i bought it used so i expected there was something that was going to go wrong. but anyways, i have got it installed on a bike now and even have it to were it starts and runs some. i...
  2. J

    Carby Zeda Dio Reed Tuning, Backfiring

    I have a 66cc BikeBerry bottom end and a Zeda DioReed top end, ported W/ high compression head and expansion chamber. (Just Rebuilt) Can only get it running for a few minutes before it dies, hardly any throttle response and won't really rev, and lots of oil spitting out the exhaust. Its also is...
  3. B

    Bikeberry Builds Complete Motorized Bike Giveaway

    Welcome to BikeBerry Builds! The show where we take new or old bicycles and overhaul them with the latest engine kits and performance parts. But that's not it, don't miss out on this awesome opportunity to take home your very own Micargi Pantera Motorized Bike Build because at the end of the...
  4. N

    Need help with idle

    I just got my bike back up after a few years and it runs fine. However when I pull the left lever and stop the bike so it idles, the engine gets incredibly loud and starts vibrating hard. I've adjusted the idle pin thing in the carb in a few positions and it's the same. Any advice for getting my...
  5. Rin

    Which 2 stroke motor is better ?

    Going to get zio reed and carburetor, expansion chamber, high compression head and high performance cdi, which of these motors will be better for these modifications? https://www.bikeberry.com/flying-horse-66-80cc-epa-approved-black-angle-fire-2-stroke-bicycle-engine-kit.html...
  6. J

    Bucking bar sticking out too far......?

    It started yesterday, I put around 20 miles on the bike throughout the day, everything was running perfect. When all of a sudden the bike began to high rev and I lost power. The clutch would not engage with the handle released ( and all was adjusted fine). The rear wheel was free spinning...
  7. J

    Missing clutch cover spring....? needed or not?

    So I've put near 2000 miles on this motor in the past. It has been sitting for about a year until this new bike build. I opened the clutch cover to grease and adjust the clutch as needed. And I noticed the spring under the clutch pad cover is missing. Now obvously, the spring is not completely...
  8. Will'smotobikes19

    Best carb for 74cc stroker engine?

    Hey guys just wanted to ask what carb setup you guys recommend for a 48mm bore x 41mm stroke engine I'm building. The ports are 40mm. Would a 19mm delorto clone with a #90 jet be good? it is a iron lined cylinder.
  9. Will'smotobikes19

    New performance build questions

    Hey guys I just purchased some parts for my next bike build. I got a 48mm iron sleeved cylinder, windowed flat top piston, 3mm stroker crank, an ebay 66cc/80cc kit also the smaller saucer style high compression head, regina chain #415 and some cnc aluminum grips. An ngk b5hs as well. Since I'm...
  10. K

    Engine Trouble Cylinder coating question

    Can anyone tell me whats going on here what is that residue on the cylinder ,also is this cylinder coated, and if it is how thick is it, can it be bored to remove the old coating and re-coated ?, its a Kawasaki cylinder from the 70s , were they originally coated from the factory ?
  11. Will'smotobikes19

    Belt drive 2 stroke budget build

    I've just been going through ideas I had after looking at a few old weedeaters, of course these engines are very small I wouldn't go under 25cc and pedalling would be neccesary. If you could attach a pulley to the shaft while still keeping the pull start then you could build a mount for the...
  12. Will'smotobikes19

    Inline twin 132cc 2 stroke

    Hey guys I had another idea in the area of frankenstein engines, take 2 regular 66cc jugs and make a new crankcase and crank from a homemade mold based on the regular crankcase only wider and meant for 2 cylinders, therefore having a 132cc monster! or even use the 48cc cylinders that would be...
  13. Glenng

    is the rear wheel supposed to move with good force when clutch is engaged

    Is the rear wheel supposed to move with good force when clutch is not pressed? when i push the bike with good force without pressing the clutch it moves forward an inch or two and makes a burping noise. Is this normal i think i remember the rear wheel being totally locked and unable to spin at...
  14. Will'smotobikes19

    50cc inline twin 2 stroke

    Hey guys just want to talk about an idea I had. They make snowmobile engines that are multiple cylinder 2 strokes right?. What if you could scale one down and have an inline twin 2 stroke say 50cc so 2 25cc cylinders wouldn't that be cool? should rev really high too. Has anyone attempted to make...
  15. Will'smotobikes19

    49cc Pocketbike engine on bicycle?

    Hi guys I was just wondering if anyone knows if the huasheng 49cc 4 stroke gearboxes will bolt onto the 2 stroke pocket bike engines. I know they're a bit under powered but they're pretty cheap and you can get an upgraded version of them and they have a centrifugal clutch too. I've seen 2 or 3...
  16. Will'smotobikes19

    Tips from what I've learned

    Hey guys just wanted to let anyone that needs some tips have some. * Don't use rag joint sprockets they always become untrue and are dangerous use the cnc adapters or hard mounted sprockets instead. * Don't skimp on China chain there is a company called Regina chain that makes #415 and it's...
  17. Q

    Break In Proper carburetor tuning during break in.

    Hello everyone, I would like to ask you about my problems with 80cc engine I have. I am trying to break it in properly, as instruction says. I use 1:16 semisynthetic oil mix with 95 unleaded gasoline. Problem is low top speed - about 20mph(30km/h). Engine starts four stroking above that speed...
  18. 6

    What else can be done to maximize sh**ty Chinese engines

    So far I’ve replaced every sh**ty, self stripping nut and bolt I can. I live in the US so finding metric bolts is sometimes a challenge. I reinforced the engine mounts and chain guide and placed make shift rubber shocks between the frame and the engine to stop it from shaking so hard the chain...
  19. J

    Wet magneto coil

    I'm new around here, is it possible for the coil to fail when it gets wet. (i am getting no spark) I was driving around in the rain and the bike was fine, the next day i got start it and nothing. I replaced the plug checked resistance on the cdi and on the coil and there was resistance showing...
  20. Baconator101

    Bewildered and lost, 2 stroke china girl

    I was lost for a while in the labyrinth of videos that is YouTube when a thought occurred to me. Have any of you folks used the Common 2 stroke 66cc for anything other than means of tinkering and transportation? Would it be good for anything? Generator? Pressure washer? Im not talking about...