combustion

  1. scrappybunch

    HS Tecumseh newer style combustion chamber

    Found a newer style vertical shaft in the dumpster at work. I was curious to see what had changed since the 70's when I was a kid fixing mowers. There is a lot more plastic, the cam gear, oil pump housing, and a plastic bushing on one end of the cam. Also a real centrifugal compression...
  2. Dr. Shop Teacher

    Cheap, quick way to clean up carbon build up in combustion chamber and ports?

    Like Rocky Balboa, I'm stupidly getting back in the ring with a Tec OH60. Decided I'd rebuild from ground up--was an oil burner and I need to clean up the head and exhaust ports. Anyone have any suggestions for cleaning all the carbon build up out without access to a media blaster? I'm a little...
  3. W

    HF Predator 212cc combustion chambers

    Is a Harbor Freight Predator #69730 a hemi engine? Does anyone have pictures of the combustion chambers for the various Harbor Freight Predator 212cc engines?
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