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Old 05-11-2009 | 11:07 PM
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av8tor1977
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Default RE: Echo engines cut crank, plug block.
Yes, I definitely still use the rear bearing. The plug is shallow and just replaces the seal. The crank is cut so that it still fully enters the rear bearing.

I doubt if one could measure a power difference just from the seal drag, though the seal drag is noticeable when you turn one over by hand without the piston/cylinder installed.

AV8TOR
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