Bearing wear

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Byard-HWJ

Junior Member
Joined
Sep 12, 2024
Posts
13
Reaction score
17
Location
SE NC
First Name
Herb
Truck Year
1980
Truck Model
K30
Engine Size
350
I have attached a couple of pictures of one of the main caps and rod cap bearings form a 160k mile 1993 454 I’m working on. Does this wear seem excessive. The crank appears to smooth without any grooves or distortion. These are the only 2 I have removed so far.
 

Attachments

  • IMG_7755.jpeg
    IMG_7755.jpeg
    79.7 KB · Views: 29
  • IMG_7754.jpeg
    IMG_7754.jpeg
    96.7 KB · Views: 22

nvrenuf

Full Access Member
Joined
Jul 30, 2010
Posts
1,981
Reaction score
2,522
Location
Mobile, Al.
First Name
John
Truck Year
1991
Truck Model
K5
Engine Size
454
To me, it doesn’t look excessive for 160k miles. There’s a lot of wear but no brass(?) showing so it’s not too deep. I wonder about the odd pattern towards the side of the rod bearing though.
 

squaredeal91

Full Access Member
Joined
Mar 10, 2023
Posts
2,584
Reaction score
4,697
Location
Cave junction Oregon
First Name
Greg bush
Truck Year
1991 SB
Truck Model
K30
Engine Size
5.9 Cummins 12 valve
I don't see any copper/brass color,
Picture on right has a funny spot on the right side?
 

Ricko1966

Full Access Member
Joined
Apr 11, 2017
Posts
5,586
Reaction score
9,071
Location
kansas
First Name
Rick
Truck Year
1975
Truck Model
c20
Engine Size
350
160k no wear is not excessive. How far are you going with this engine out of truck on an engine stand,or working pan off,underneath the truck? What are you trying to accomplish?
 

Byard-HWJ

Junior Member
Joined
Sep 12, 2024
Posts
13
Reaction score
17
Location
SE NC
First Name
Herb
Truck Year
1980
Truck Model
K30
Engine Size
350
Thanks for the replies, like I said in the post where I was asking about the gaskets its been a long time since I have helped with working on motors. I have worked on my personal 4x4 trucks for 40 years. 2wd to 4wd conversion's, lifts, axle swaps, tranmission swaps and most any repair in between, but just not a lot of exposure to the wear of a engines internals. I have always watched TV shows like Powernation and all the others over the years, but putting a part in your hand is a lot different than seeing it on a screen. So thanks for your patience.

Yes the engine is on a stand and I'm taking it all the way down.
 

Byard-HWJ

Junior Member
Joined
Sep 12, 2024
Posts
13
Reaction score
17
Location
SE NC
First Name
Herb
Truck Year
1980
Truck Model
K30
Engine Size
350
Reference wear pattern on the rod bearing.....I am saw where someone posted a picture of a bearing with similar wear and folks are saying cause could be a bent rod?
 

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,693
Reaction score
6,875
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
do you know the measurement ? If not, may be woth checking out, if its barely any different or the same, id ignore it i guess, but people for similar bearings suggest plastigaging because it may indicate a connecting rod that is slightly bent OR the end of the rod is not machined perfectly , having a high and low side
 
  • Like
Reactions: WFO

Latest posts

Forum statistics

Threads
44,391
Posts
956,333
Members
36,683
Latest member
aim410x
Top