OS 1.20

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03-01-2007, 03:27 PM

kahn41

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OS 1.20

I have a OS 1.20 fs and replaced the liner piston and ring, readjusted the valves and seem to have little compression. What else could be the problem? BTW it starts fine and seems to run good but I cant fly it due to winter.

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03-02-2007, 10:13 AM

Bax

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RE: OS 1.20

With a new ring and liner, compression may feel down because they have to be broken-in again. Compression should rise as the ring and liner seat to each other.