Found Copper & Silver metal in oil filter...
#11
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Re: Found Copper & Silver metal in oil filter...
one of the lessons I learned.........
once motors are running get them to temp, shut them down and pull oil sample (Go to NAPA and order kit, ~$14). Pull sample and see what it says.
Change oil and do it again but run motor for 15 minutes or so.
Compare notes, call analyst for his insight.
If all okay, change oil and run again for about an hour, then pul lsample again.
Pull a sample EVERY time you change oil just accept it as part of boat maintenance. OVer time lab will develop trend lines and be able to see a LOT of info.
Then you will know very early on if a problem exist. It adds 10 to 15 days to engine install to do this, and $14 to a oil change, but it is smart, you spend less than $50 at point of install, and KNOW if there is going to be a problem. If there is builder can rectify fast, if everything here checks out, and you later have a problem installer is place to look.
longer term you will know your motor far better tha n99% of boaters who will ever live...
once motors are running get them to temp, shut them down and pull oil sample (Go to NAPA and order kit, ~$14). Pull sample and see what it says.
Change oil and do it again but run motor for 15 minutes or so.
Compare notes, call analyst for his insight.
If all okay, change oil and run again for about an hour, then pul lsample again.
Pull a sample EVERY time you change oil just accept it as part of boat maintenance. OVer time lab will develop trend lines and be able to see a LOT of info.
Then you will know very early on if a problem exist. It adds 10 to 15 days to engine install to do this, and $14 to a oil change, but it is smart, you spend less than $50 at point of install, and KNOW if there is going to be a problem. If there is builder can rectify fast, if everything here checks out, and you later have a problem installer is place to look.
longer term you will know your motor far better tha n99% of boaters who will ever live...
#12
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Re: Found Copper & Silver metal in oil filter...
Bill gave you best advice. You are having a bearing failure. Most likely due to improper clearance. I also have seen the GM cam bearings deterate. I always replace them on rebuilts with 1 piece bearings.
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Re: Found Copper & Silver metal in oil filter...
Originally Posted by Linster
Bill gave you best advice. You are having a bearing failure. Most likely due to improper clearance. I also have seen the GM cam bearings deterate. I always replace them on rebuilts with 1 piece bearings.
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Re: Found Copper & Silver metal in oil filter...
Q?: If the copper is from the bearings... what is the most logical answer to the silver flakes?
#15
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Re: Found Copper & Silver metal in oil filter...
The silver is the outside lining, the copper is the bearing that is being ground down
Sorry I have been in your shoes also....
Sorry I have been in your shoes also....
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Re: Found Copper & Silver metal in oil filter...
The cam can also have a copper like appearance when it grinds down! It happened to me at 20 hours oil pressure was low because a lifter came apart and took out a lobe in the cam. The low oil pressure was the space between the lifter and the block.
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Re: Found Copper & Silver metal in oil filter...
Put a magnet against the flakes. If they are magnetic, cam material. Non magnetic, silver is the babbit of the bearings and copper is the core of the bearings and you have already wore though the bearing surface. If it is not knocking now, you dodged an expensive bullet.
BT
BT
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Re: Found Copper & Silver metal in oil filter...
I think we all are learning the expensive way why Merc motors cost so much. I'm on the third engine in my little Donzi, and I have maybe 15 hours on it in over three years.
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Re: Found Copper & Silver metal in oil filter...
Originally Posted by blue thunder
Put a magnet against the flakes. If they are magnetic, cam material. Non magnetic, silver is the babbit of the bearings and copper is the core of the bearings and you have already wore though the bearing surface. If it is not knocking now, you dodged an expensive bullet.
BT
BT
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Re: Found Copper & Silver metal in oil filter...
Originally Posted by seahawk
The cam can also have a copper like appearance when it grinds down! It happened to me at 20 hours oil pressure was low because a lifter came apart and took out a lobe in the cam. The low oil pressure was the space between the lifter and the block.