found my knock

[SIXBANGR]

#2 & #3 cam bearings both have pieces missing. I found no other issues. Engine is clean as can be.

 

[dr_frankenstein]

Shoot some pics!

Lets see em!

 

[SIXBANGR]

here is one of them. Picture is bad, but there are pieces falling off on the edge and by the oil hole.

 

[dr_frankenstein]

holy cow, thats a torn up bearing, any idea on the cause?

 

[SIXBANGR]

holy cow, thats a torn up bearing, any idea on the cause?

yes, when i put the rear main in, i did not get the oil pickup tube tight. It was very lose when i dropped the pan yesterday.

 

[Chuck Leeper]

" I found no other issues"
So, if the engine was starved of oil, due to the loose pickup, how did the rest of the brgs not show the same fate???

 

[SIXBANGR]

" I found no other issues"
So, if the engine was starved of oil, due to the loose pickup, how did the rest of the brgs not show the same fate???

I have no idea, but they looked fine to me. But then I'm the one that thought my pickup tube was in right.

 

[3.8L V-8 eater]

What brand of bearings were you using?? Were they a coated bearing??

 

[SIXBANGR]

What brand of bearings were you using?? Were they a coated bearing??

64,000 mile stock long block.

 

[SIXBANGR]

here's most of the other bearings. Maybe they are damaged, which is fine, getting redone any way. Crank looks real nice but i am going to have it looked at.

 

[Chuck Leeper]

Brgs are TOAST! Good that U R going to have that crank checked, too.
I doubt that the 2 cam brgs were the source of the knock. I'd bet that a check of clearances on the brgs in the pic would reveal the real source....

 

[bison]

From what I've seen about 8 out of
10 cams runout more than .001 out of the box. Check the cam straightness. I agree with chuck

 

[SIXBANGR]

machine shop thinks the crank will polish with no problem. As soon as i get it all back, i will put a set of these bearings in and check. Cam will not be reused.