compression

  1. M

    engine revs but under load makes no power

    I was wondering if anybody here could help as i now have no idea what is wrong with my engine basically I broke the top compression ring and the engine ate it. after opening the engine i found the ring had shattered and fragments of it smashed against the head. looking at the cylinder wall it...
  2. C

    Compression discrepancy

    Quick question... I have a Skyhawk Gt5a, and I shaved the head for. Higher compression. .. I am being told by 2 different people 2 entirely different "normal" readings for a stock engine. One guy says 80-90psi stock Other guy says they come 130-140 stock. Pretty big difference here. Any...
  3. Sikk_29

    Compression Loss? Engine Will Not Start

    I recently upgraded to an aftermarket high compression head on my Amazon-purchased (Seeutek) 66cc two-stroke engine. I had been having issues maintaining an idle after the bike had been ridden for 10 minutes or so, which I assumed to be head warpage. I removed the cylinder body to replace a...
  4. M

    Need Help With Motorized Bike Engine / Crankshaft Wont Turn

    Hi All, Let me try to explain my problem in as much useful detail as possible here. I'm not the most savvy mechanic, although this bike being quite fun and a pain in the ass has taught me a fair deal so far. I've been riding a seeutek motorized bike mounted on a Schwinn for approximately 100...
  5. S

    No Exhaust Baffle No Problem.... Right?.....

    Hello, i am new to the Forum. I am posting because im afraid my motor is going to blow. my build is as follows, -66/80cc silver slant kit "From Gasbike.net" -NGK #BPR6HIX Spark Plug -Super Charge HI-Preformance CDI "From Gasbike.net" -Stock Carburetor -Stock Air Intake Tube "Ported by me"...
  6. J

    I've done everything and still no start

    I got a 2 stroke, 80cc kit a couple weeks ago and built it in a day or so but for the last 2 weeks I have been trying to start it almost everyday and I get nothing. I pedal, get some speed, ease on the throttle and pop the clutch and there is not even the faintest semblance of engine combustion...
  7. T

    Compression

    What is the compression suppose to be for a 2 stroke 80cc engine? Is there any special way you need to set up for the compression test? Any info would be helpful. Thanks. thumper68. :-||, (?), :-{, .kick2
  8. C

    stock 49cc 2 stroke compression

    Hey guys, i did a compression check on my engine today just because, and was a little concerned when i found that the engine was putting out 80psi. Now this sounded ok to me at first, but after seeing a video on youtube saying that these engines come stock with around 100, to 120 psi, i thought...