2 stroke

  1. 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 ?
  2. 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...
  3. 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...
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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...
  11. 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...
  12. Baconator101

    Centrifugal Clutch Fix?

    My clutch bell just detached itself from the small gear cog. It seems as though it was just pressed in, no solder or weld marks on it. If not fixable anybody have any luck on purchasing a decent quality one lately?
  13. Raamastak

    Running too rich

    Hello all I'm new here on the forums, after sealing up the air leaks between the intake and carb and intake and cylinder I started to get to Rich of a fuel air mix. After reading Aussie Steve's post about carb tuning I moved the needle adjustment to the leanest point, this helped but I am still...
  14. S

    No spark, no start.

    Got myself a 80cx(66) engine for a few months new slurry of problems all fixed (except exhaust). Now I went to start it the other day and when I pop the clutch the engine got ripped out of the front frame mounts and pulled off to the side. Now I have it all put back together since then with new...
  15. B

    Carby Needs some info

    I just bought an 80cc pedal start engine and it came with 2 carbs but it doesn't have the tub that goes from engine to carb can someone tell me what it's called or we're I could get one real cheap Thank you
  16. Cooters Carport


    How many people have used nitrous on these 2 stroke engines? If so how did the engine take it?
  17. Cooters Carport

    Engine Trouble HELP!!!!! My Bike Just Seised Up

    My bike has been working flawlessly lately doing about 45mph and all the sudden I took it out of the garage and the the engine wont move at all. How do I free it?
  18. Cooters Carport

    What is the fuel oil ratio to run E85 in my 2 Stroke motor

    I was wondering what the fuel oil ratio to run E85 in my 2 Stroke bike engine.
  19. C

    What is the fuel oil ratio to run E85 in a 2 stroke bike motor?

    I want to run my bike on E85 but idk what the fuel oil ratio to run it with.
  20. B


    Wanting to purchase a 2-stroke engine for a cruiser i have laying around at home. Looking for the best bang for my buck, and was looking into THIS kit on ebay. Not looking for something too expensive since it's only a weekend cruiser, just something fun. Any suggestions?