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Old 11-24-2020, 01:26 PM   #20
rgano
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City: Southport, FL near Panama City
Vessel Name: FROLIC
Vessel Model: Mainship 30 Pilot II since 2015. GB-42 1986-2015. Former Unlimited Tonnage Master
Join Date: Oct 2007
Posts: 4,984
Quote:
Originally Posted by nmuir View Post
Got the oil samples back (faster than expected which is nice!)


I attach the port engine sample. The metals seem ok. If there was piston slap I might expect more aluminum, but bow to those with more knowledge than me!


Does the sample prompt any comments?
I can offer you the sample readings for my port Lehman 120 a mere four operating hours before the engine made so much slapping noise that I had it rebored and all new pistons and bearings put in. AND I can offer the oil analysis data for 103 operating hours after the overhaul.

Iron before/after 7/30 and remained in this 30 +/- regime for the next 28 years

Copper before/after 1/10 and remained consistent with post overhaul number for next 28 years

Al before/after 2/11 and remained consistent with "after" reading thereafter

Lead before/after 2/3 and ditto.

So to me looking at this data tells me nothing about impending doom.
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Rich Gano
FROLIC (2005 MainShip 30 Pilot II)
Panama City area
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