 crater in rod bearing, what does this mean? |
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| mightyohm |
 Feb 24 2004, 12:08 AM
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Advanced Member  Group: Benefactors Posts: 2,277 Joined: 16-January 03 From: Seattle, WA Member No.: 162 Region Association: Pacific Northwest   |
This is an extreme closup of a rod bearing on a 2.0 I tore down. There is a small crater in the bearing. It is at least a few thousands deep and definitely catches a nail. The scratches through it are from me scraping at it with my nail to see if more would flake off.
Anyone seen this before? I have a cam bearing that is much worse but no pics yet. Attached image(s) 
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| tracks914 |
Feb 24 2004, 08:18 PM
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Canadian Member Group: Benefactors Posts: 2,083 Joined: 15-January 03 From: Timmins, Ontario, Canada Member No.: 153 Region Association: None |
I've never seen it but what I would like to know is, if it is delamination, where did the babbit go? If it came off, peeled off or whatever, it would surely "pick up" and wipe (or score) the rest of the bearing.
I deal with babbit bearings for a living working on large and small hydro electric generators. We scape them, repore them, fix them, melt them down whatever it takes to get them running again but have never seen "holes" like that without a "wipe" next to it. (IMG:style_emoticons/default/confused24.gif) I kind of like the"acid etch" theory but haven't seen one first hand to offer credible assistance. |
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Posts in this topic
jkeyzer crater in rod bearing Feb 24 2004, 12:08 AM
jkeyzer Another pic, different angle.
Nevermind all the c... Feb 24 2004, 12:14 AM ChrisReale Oil starvation? :confused: Feb 24 2004, 12:24 AM jkeyzer Here's the cam bearing, much worse. Feb 24 2004, 12:50 AM ArtechnikA i donno - i don't see as many engine parts as ... Feb 24 2004, 05:49 AM Mark Henry Delamination, seen it many times.
The bearing has... Feb 24 2004, 06:56 AM Jake Raby The OEM bearings sometimes had this problem. I see... Feb 24 2004, 08:38 AM Mark Henry Yep, OEM main bearings. Feb 24 2004, 10:24 AM jkeyzer Jake, you are right, these are OEM bearings with V... Feb 24 2004, 11:28 AM Jake Raby A tad bit of the delamination won't hurt anyth... Feb 24 2004, 11:51 AM Matt Romanowski I was always under the impression, especially with... Feb 24 2004, 06:15 PM
Thorshammer Many of you have seen this before, but this is ind... Feb 26 2004, 11:36 AM |
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