high compression

  1. E

    High Compression (180psi!) but Low Power on Stock Grubee Kit

    Howdy Folks, I recently purchased my first gas bike kit - a Grubee Skyhawk GT-5A 66cc bike kit, preinstalled on a rusty but solid OLD mountain bike. Got it all "as-is" for $150 Canadian, which seemed fair. It appears to have 180PSI! Is this bad? Looks like I should have seen 100-120 PSI, maybe...
  2. 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"...