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Got our engine running, jetted correctly, even running a bit rich top and bottom to break in. Local guy slightly bored my cylinder over and ported. Stock head, stock bottom end with no vertical play. I did a leak down test and held 7psi for 10 min. Tried to kick the motor over today after...

I have two clutches to choose from to put back in my blaster. Not sure which set to use. One has little friction pads, the other has a full friction surface. I was told the one with pads was a dirt digger clutch set when I bought the parts engine. I have no idea what the other one is. Can you...

From what I've read, I shouldn't have problems using a new style motor(05) with an old harness and CDI, right? I just ground the green wire and hook up everything else, right? Thanks in advance for your help!

Hey all, couple of friends and I are having a race in a few weeks using home made off-road go karts. We're limited to 250cc air cooled engines, so I choose to use a Blaster motor. Picked up an older ATV, and am building the thing for the race at the end of June. Frame is almost done, we just...