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Old 06-23-2013, 01:08 PM
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Default RE: OS 1.20 Go Boom....!!!

IMO the piston lost parts of it's skirt...which locked it up....connecting rod didn't like that and couldn't decide which way it wanted to go...developed a split personality...

Seen another O.S. 1.20 with the bottom of the piston skirt missing...tore the innards up good, but not as extensively (throughly ) as yours![X(]

It makes me wonder sometimes, when I look at how much material they (O.S. ) have removed to lighten the piston....there isn't a whole lot left down there and it must flex somewhat because of piston rocking / side loads...