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04-23-2010, 08:59 PM
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RCC Expert Contributor
I am: John H
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top 1/4 inch of piston is brown
just swapping some engines around. the top quarter inch or so on my TT 46 pro(over 1000 flights and counting) and my west 50(100 flights or so) have a brown stain on the top portion of the piston. is this normal? i am using omega 10%. cheers, john
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04-23-2010, 10:48 PM
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Re: top 1/4 inch of piston is brown
Think so. Usually a result of cooked lube.
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04-24-2010, 11:26 AM
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#3 |
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Re: top 1/4 inch of piston is brown
Yup, its normal. You can clean it off if you want. But if the motor is running good, I'd wait for another 1000 flights before doing that
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04-24-2010, 06:59 PM
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#4 |
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RCC Supreme Contributor
I am: Bill Brisson
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Re: top 1/4 inch of piston is brown
just keep flying it untill you screw it into the dirt, all my high time engines show this and run fine
Bill
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