Thread: Lean Cylinder?
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Old 10-01-2010, 12:13 PM   #10
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2007 2.34LR, EFR7670
LINK G4+ hybrid STi


Originally Posted by yaya20 View Post
Any more input? I had a very similar failure recently. My pics are in the linked thread in the OP.

I wasn't able to find much detail about Motoryder's melted piston.
He's my neighbor and its possible he didn't post the failure here. You need to be very hot to melt a piston like that, way beyond normal combustion temps. About the only thing I can think of that would allow that would be an extremely lean condition. Those where his findings also.
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