Generation IV Internal Engine - Bad lifter, metal flakes in oil pan, can I get away with just a cam and lifter swap?
08-05-2012, 03:52 PM
So I drained the oil today to help diagnose my lifter knock and to see what all is going on. the oil drain plug had enouph metal on it that I didnt need to even bother cutting open the filter. most of it was fine powder but therer was some descent sized flakes in there.
It didnt look copper but I couldnt tell. I belive the lifter is just grinding the cam down but my question is.
Can I get away with just a cam and lifter swap? Oil pressure is fine there wasnt any metal shavings in the top end when I pulled the valve covor.
What would you guys recommend if this is your engine?
it is a high performance 418 with only about 10k miles on it. Ive heard when a lifter goes bad all you need is another cam and lifter any thoughts?
08-05-2012, 04:57 PM
I'd be more worried about more damage myself. Who built the shortblock/engine?
08-05-2012, 05:38 PM
texas speed, but I purchased it from someone else who put 5k miles on it I highly doubt texas speed will covor anything they may covor the lifter that failed (50 bucks) but they will not cover the entire engine i dont even have to call them to know this
08-05-2012, 05:39 PM
well forgot that bearing material isnt magnetic so i bet all that metal is from the cam journal that the lifter is grinding off. like i said I know thats the underlying issue my concern is metal getting into other areas.
08-05-2012, 06:10 PM
I would atleast take the oil pump apart and clean it out including the relief valve.
08-06-2012, 12:11 AM
If the oil pump is fine you can take a chance by just changing the cam and lifters but with a very close monitoring of the oil pressure thereafter.
i will take the oil filter apart and take a look inside to see what the oil pump inhaled. If by any chance at any time the oil pressure drops drastically, turn off and DO NOT restart the engine. You will have to take it apart, but this is only a possibility and we are hope never.
08-06-2012, 12:23 AM
yeah i understand, im not ganna tear it down unless I have to, but i only got 6k into the engine so even with a full rebuild that would cost about 1k or so im still out ahead, I can pull the motor and dissasemble it myself and take it to the machine shop in pieces I just did that with a lingenfelter 403 that spun a bearing and only cost 900 to put it back together
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