spun bearing, what is this pin piece???

[mainer]

just bought a 07 lmm engine with 70k, completely stock spun bearing.


#2 main from the front, could see heat on crank, havent pulled the others yet but no signs of heat. otherwise the engine looks fine so far.


what are these pin looking pieces that were in the oil pan though? they dont look familiar to me. something is clearly broken off the bottom of each one or maybe they were 1 piece but the bottom broken area appears to be of larger diameter.

 

[blackdirtymax]

sure you dont have a bent crank?

 

[emiller3]

Is that the pins for the oil squirter?

 

[Fingers]

Those are the tops of two valve stems.

 

[blackdirtymax]

Those are the tops of two valve stems.

i was gonna say that , but wasnt real sure

 

[emiller3]

Wow, definitely carnage

 

[mainer]

so what would cause this on a stock truck? random failure

where would you guess it started ? (oil pump has some damage but I have seen much worse)

 

[dmaxfireman]

i concur on the valve stems, but where are the keepers?

 

[TheBac]

i concur on the valve stems, but where are the keepers?

The little chunks?

 

[mainer]

anyone have a picture of a complete keeper?

 

[Rudely]

This is all I had tonight, can get pic of good ones tomorrow. However, I suspect this is what you are going to find.
Wishing you the best!

anyone have a picture of a complete keeper?

 

[770JOHNNYW]

ive got a new set of bearings rod and crank if you can use them a customer hung me out to dry on them...200.00 if that helps.:thumb:

 

[mainer]

This is all I had tonight, can get pic of good ones tomorrow. However, I suspect this is what you are going to find.
Wishing you the best!

any idea on cause? i'm trying to figure out how its related to spun/ trashed bearing?

 

[Rudely]

My failure was due to having too many bowls of stupid for breakfast!
Lets just say, it had plenty of ether to start 25 Dmaxs.

Your bearing failure could have dropped the oil pressure not allowing it to get to the valves fast enough upon starting. The other pieces could be pieces of the ears broken off of a piston or two.
Keep in mind I am a diesel dummy, my opinion is merely a guess.

Be glad you didn't find this treasure chest in your oil pan!
My pot o' gold!!

any idea on cause? i'm trying to figure out how its related to spun/ trashed bearing?

 

[JoshH]

I've seen the same thing Rudely posted caused by someone pouring diesel down the turbo inlet. Why, you may ask. Well, they ran out of fuel, and they couldn't get the primer on the fuel filter to work. When the diesel finally lit, it ran away until everything in the top end came apart.

 

[JD4440]

I've seen the same thing Rudely posted caused by someone pouring diesel down the turbo inlet. Why, you may ask. Well, they ran out of fuel, and they couldn't get the primer on the fuel filter to work. When the diesel finally lit, it ran away until everything in the top end came apart.

Question is: Did they have that split second of joy that it had started before they heard metal against metal ?

 

[Rudely]

:roflmao::roflmao::roflmao::roflmao::roflmao: Hell no!!!!

Mine shot straight to the nines!! I knew I was in big trouble the instant it lit up!!

Mainer, sorry for derailing your thread. I wish you nothing but the best in whatever you may discover.

Question is: Did they have that split second of joy that it had started before they heard metal against metal ?

 

[SSchmi5519]

Looks like it saw some serious RPM or was hydrolocked.

 

[Burn Down]

My failure was due to having too many bowls of stupid for breakfast!Lets just say, it had plenty of ether to start 25 Dmaxs.

Your bearing failure could have dropped the oil pressure not allowing it to get to the valves fast enough upon starting. The other pieces could be pieces of the ears broken off of a piston or two.
Keep in mind I am a diesel dummy, my opinion is merely a guess.

Be glad you didn't find this treasure chest in your oil pan!
My pot o' gold!!

^^^ Rudley that's quote material there! :rofl::hug: That's a hard lesson... I have been preaching caution with starting fluid ever since I bent the push rods on a 3406 Cat

 

[Diesel power]

Wow bad news....

Looks like the lash was set way too tight, valve contacted the piston, broke the valve stems, broken pieces clogged oil return from the top end and the lack of oil along with contaminated oil caused a bearing issue.

just a thought.