YD Engine cylinder Head differences

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    • March 31, 2016 at 12:23 pm #45991
      Bob Rooks
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        Not at all familiar with that engine, but the differences in the valves could be:

        Different face angles (3 or 4 angles).

        Different materials – stellite and/or sodium cooled exhaust valves.

        Different stem diameters.

        Replaceable guides.

        Different type of rotators.

        Head diameters.

        The list could be long.

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      • April 1, 2016 at 1:01 pm #45994
        kenotractors
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          I was thinking different face angles,  took both intake and exhaust valves out and they are the same length.

          Once you put them in the head, exhaust valve sits a little bit lower then the intake valves, on all 3 cylinders.

          Tyler Nystrom
          Keno Tractors
          parts@kenotractors.com
          866-363-8193
          Phone hours: M-F 8am to 5:30pm PST Sat 9am to 1pm PST

        • April 2, 2016 at 12:43 pm #45998
          Bob Rooks
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            Did you try bluing the seats to see where the contact point is on the valve face?

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          • April 8, 2016 at 10:43 am #46013
            kenotractors
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              No we didn’t try that, should’ve!  But the engine was sold, so we just put a new head on it.  A YD2 head.  Worked just fine….  Just kind of a head scratcher.

               

              Tyler Nystrom
              Keno Tractors
              parts@kenotractors.com
              866-363-8193
              Phone hours: M-F 8am to 5:30pm PST Sat 9am to 1pm PST

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